I'm using standard loads with very little case intrusion. I use regular old RCBS reloading gear.lol. Not saying it won’t work, but it would sure make reloading interesting. lol
Dave
I love this idea.What is needed here is a verified side by side test. Your new bullet design against say three of the top bullets same Cal. and weight shot at 500 out of the same gun. Target always tells the truth!
Wow, that's a bit confrontational.Glad life worked out so well for you.
You have same the degree status as Dr. Jill Biden
No, there is no data that you have provided other than a drag curve which paints a positive picture of your "new" design but doesn't show the whole storyNo sure what more data you want to see. The only real innovation that I am claiming is the aerospike base (inverted rocket nozzle). The data is pretty clear that it works.
What do you want to see? If I have it I'll share it.No, there is no data that you have provided other than a drag curve which paints a positive picture of your "new" design but doesn't show the whole story
So rather than further the discussion by asking him questions we’re going to just dismiss the whole thing because he didn't post up the whole story upfront? Ridiculous.No, there is no data that you have provided other than a drag curve which paints a positive picture of your "new" design but doesn't show the whole story
Copying this so we have proof for later. I will take your drag and calculate a bc at home tonightView attachment 1565166
Look at the reduction in drag for the 6.5 Creedmoor/PRC design. I think I have solid ground to stand on here.
He is some of the radar data from a range date earlier this month. I use the radar data to calculate both the mach number and the drag coefficient.Show your "calculated" BC comparison or even better show an actual fired doppler radar measured comparison. So we can all believe you, get Applied Ballistics, you know, the actual proven experts in the field, to measure it. They also don't go posting about their amazing phds to prove their point, take a hint from them
At this point my dog's shit has more credibility than you so even if you post speed results bot many will believe it due to your tactics here.
Dia (m) | mass (grains) | range date | 6/8/2024 | range (m) | |||||||||||||||
0.0067 | 101.5 | time | 1200 | 0 | 10 | 20 | 30 | 40 | 50 | ||||||||||
Shot # | Desired Mach | IMR 4895 (grains) | temp (K) | 303.7056 | V0 (m/s) | V10 | V20 | V30 | V40 | V50 | dv/dx | Mach | Cd | Mach | CD | ||||
1 | 2.6 | 37.0 | press (inHG) | 29.96 | 860 | 851 | 844 | 837 | 830 | 822 | -0.74286 | 2.397988 | 0.284829 | average | 2.381 | 0.290 | |||
2 | 2.6 | 37.0 | Humidity (%) | 33 | 849 | 841 | 834 | 827 | 820 | 812 | -0.72857 | 2.368987 | 0.282771 | confidence | 0.020 | 0.005 | |||
3 | 2.6 | 37.0 | density (kg/m^3) | 1.1575 | 857 | 848 | 841 | 833 | 826 | 818 | -0.76857 | 2.388004 | 0.29592 | Mach | CD | ||||
4 | 2.6 | 37.0 | 846 | 838 | 831 | 824 | 817 | 809 | -0.72857 | 2.36043 | 0.283796 | average | 2.573 | 0.283 | |||||
5 | 2.6 | 37.0 | 858 | 850 | 842 | 835 | 828 | 820 | -0.75143 | 2.392758 | 0.288745 | confidence | 0.013 | 0.006 | |||||
6 | 2.6 | 37.0 | range date | 6/9/2024 | 842 | 834 | 826 | 819 | 812 | 804 | -0.75143 | 2.347118 | 0.294359 | Mach | CD | ||||
7 | 2.6 | 37.0 | time | 1444 | 855 | 847 | 839 | 832 | 824 | 816 | -0.77429 | 2.38325 | 0.298715 | average | 2.138 | 0.298 | |||
8 | 2.6 | 37.0 | temp (K) | 306.4833 | 848 | 840 | 833 | 826 | 818 | 811 | -0.73714 | 2.365659 | 0.2865 | confidence | 0.012 | 0.015 | |||
9 | 2.6 | 37.0 | press (inHG) | 29.88 | 850 | 843 | 835 | 828 | 821 | 813 | -0.73714 | 2.372315 | 0.285696 | Mach | CD | ||||
10 | 2.6 | 37.0 | Humidity (%) | 47 | 873 | 864 | 855 | 848 | 841 | 833 | -0.78857 | 2.431267 | 0.298218 | average | 1.783 | 0.417 | |||
11 | 2.75 | 39.7 | density (kg/m^3) | 1.14023 | 923 | 915 | 906 | 899 | 891 | 884 | -0.78286 | 2.564093 | 0.283678 | confidence | 0.034 | 0.064 | |||
12 | 2.75 | 39.7 | 932 | 923 | 913 | 906 | 899 | 891 | -0.81143 | 2.585863 | 0.291556 | Mach | CD | ||||||
13 | 2.75 | 39.7 | 929 | 920 | 910 | 904 | 896 | 888 | -0.80857 | 2.577818 | 0.291436 | average | 1.525 | 0.422 | |||||
14 | 2.75 | 39.7 | 927 | 918 | 910 | 902 | 895 | 886 | -0.80571 | 2.573558 | 0.290887 | confidence | 0.028 | 0.061 | |||||
15 | 2.75 | 39.7 | 930 | 921 | 912 | 906 | 899 | 891 | -0.76286 | 2.583497 | 0.274354 | Mach | CD | ||||||
16 | 2.75 | 39.7 | 923 | 914 | 905 | 899 | 892 | 884 | -0.76286 | 2.56362 | 0.276482 | average | 1.263 | 0.405 | |||||
17 | 2.75 | 39.7 | 931 | 922 | 914 | 907 | 900 | 891 | -0.78 | 2.586336 | 0.280212 | confidence | 0.065 | 0.074 | |||||
18 | 2.75 | 39.7 | 916 | 907 | 899 | 893 | 885 | 876 | -0.77714 | 2.544217 | 0.283807 | Mach | CD | ||||||
19 | 2.75 | 39.7 | 928 | 919 | 911 | 904 | 897 | 889 | -0.76571 | 2.578291 | 0.275938 | average | 0.905 | 0.241 | |||||
20 | confidence | 0.055 | 0.045 | ||||||||||||||||
21 | 2 | 31.6 | 773 | 766 | 759 | 753 | 746 | 738 | -0.68857 | 2.14621 | 0.298094 | Mach | CD | ||||||
22 | 2 | 31.6 | 771 | 764 | 758 | 752 | 745 | 738 | -0.65143 | 2.142897 | 0.28245 | average | #DIV/0! | #DIV/0! | |||||
23 | 2 | 31.6 | 762 | 753 | 745 | 739 | 732 | -0.74 | 2.118855 | 0.324494 | confidence | #DIV/0! | #DIV/0! | ||||||
24 | 2 | 31.6 | 766 | 759 | 752 | 746 | 740 | 733 | -0.65143 | 2.127753 | 0.284461 | Mach | CD | ||||||
25 | 2 | 31.6 | 773 | 765 | 758 | 752 | 744 | 737 | -0.71143 | 2.14337 | 0.308397 | average | #DIV/0! | #DIV/0! | |||||
26 | 2 | 31.6 | 778 | 770 | 763 | 757 | 750 | 743 | -0.68857 | 2.158514 | 0.296395 | confidence | #DIV/0! | #DIV/0! | |||||
27 | 2 | 31.6 | 773 | 766 | 759 | 753 | 746 | 739 | -0.67429 | 2.146683 | 0.291845 | Mach | CD | ||||||
28 | 2 | 31.6 | 771 | 761 | 752 | 746 | 740 | 732 | -0.75429 | 2.130592 | 0.328937 | average | #DIV/0! | #DIV/0! | |||||
29 | 2 | 31.6 | 760 | 753 | 746 | 741 | 735 | 728 | -0.62571 | 2.112135 | 0.275252 | confidence | #DIV/0! | #DIV/0! | |||||
30 | 2 | 31.6 | 774 | 766 | 760 | 754 | 747 | 740 | -0.66571 | 2.149049 | 0.287818 | ||||||||
31 | 1.7 | 26.4 | 675 | 667 | 659 | 651 | 642 | 633 | -0.83714 | 1.858471 | 0.418524 | ||||||||
32 | 1.7 | 26.4 | 640 | 633 | 626 | 619 | 612 | 606 | -0.68571 | 1.768079 | 0.360345 | ||||||||
33 | 1.7 | 26.4 | 638 | 630 | 622 | 615 | 607 | 600 | -0.76 | 1.756721 | 0.401964 | ||||||||
34 | 1.7 | 26.4 | 641 | 635 | 629 | 622 | 617 | 610 | -0.61714 | 1.776598 | 0.322755 | ||||||||
35 | 1.7 | 26.4 | 639 | 628 | 618 | 609 | 600 | 590 | -0.96571 | 1.74347 | 0.514649 | ||||||||
36 | 1.7 | 26.4 | 642 | 631 | 621 | 611 | 602 | 590 | -1.02 | 1.749622 | 0.541667 | ||||||||
37 | 1.7 | 26.4 | 641 | 632 | 624 | 616 | 608 | 599 | -0.82857 | 1.760507 | 0.437289 | ||||||||
38 | 1.7 | 26.4 | 668 | 660 | 651 | 642 | 633 | 623 | -0.9 | 1.834808 | 0.455752 | ||||||||
39 | 1.7 | 26.4 | 663 | 655 | 645 | 639 | 631 | 623 | -0.79429 | 1.82487 | 0.40441 | ||||||||
40 | 1.7 | 26.4 | 635 | 629 | 623 | 617 | 611 | 606 | -0.58571 | 1.76098 | 0.309035 | ||||||||
41 | 1.5 | 22.9 | 553 | 546 | 539 | 533 | 526 | 518 | -0.68857 | 1.521514 | 0.420484 | ||||||||
42 | 1.5 | 22.9 | 558 | 551 | 543 | 536 | 529 | 519 | -0.76571 | 1.531452 | 0.464558 | ||||||||
43 | 1.5 | 22.9 | 571 | 566 | 560 | 554 | 549 | 543 | -0.56286 | 1.58209 | 0.330555 | ||||||||
44 | 1.5 | 22.9 | 557 | 548 | 539 | 531 | 522 | 512 | -0.88857 | 1.518674 | 0.543631 | ||||||||
45 | 1.5 | 22.9 | 534 | 526 | 518 | 510 | 502 | -0.8 | 1.470875 | 0.505348 | |||||||||
46 | 1.5 | 22.9 | 546 | 539 | 532 | 526 | -0.67 | 1.521277 | 0.409207 | ||||||||||
47 | 1.5 | 22.9 | 567 | 562 | 557 | 551 | 546 | 540 | -0.54 | 1.572625 | 0.31904 | ||||||||
48 | 1.5 | 22.9 | 543 | 537 | 531 | 525 | 519 | 514 | -0.58571 | 1.499744 | 0.362865 | ||||||||
49 | 1.5 | 22.9 | 546 | 539 | 532 | 525 | 518 | 510 | -0.71429 | 1.500217 | 0.442379 | ||||||||
50 | 1.5 | 22.9 | 556 | 549 | 542 | 535 | 528 | 521 | -0.7 | 1.529086 | 0.425347 | ||||||||
51 | 1.2 | 17.6 | 500 | 495 | 490 | 485 | 480 | 476 | -0.48571 | 1.384743 | 0.325903 | ||||||||
52 | 1.2 | 17.6 | 432 | 427 | 423 | 418 | 414 | 409 | -0.45429 | 1.194021 | 0.353503 | ||||||||
53 | 1.2 | 17.6 | 438 | 431 | 424 | 417 | 412 | 410 | -0.58286 | 1.198281 | 0.451939 | ||||||||
54 | 1.2 | 17.6 | 493 | 487 | 482 | 476 | 470 | 465 | -0.56286 | 1.35966 | 0.384631 | ||||||||
55 | 1.2 | 17.6 | 422 | 417 | 411 | 406 | 402 | 397 | -0.5 | 1.16184 | 0.399853 | ||||||||
56 | 1.2 | 17.6 | 448 | 438 | 429 | 423 | 414 | 407 | -0.80857 | 1.211059 | 0.62034 | ||||||||
57 | 1.2 | 17.6 | 473 | 467 | 461 | 455 | 449 | 442 | -0.61429 | 1.30003 | 0.439029 | ||||||||
58 | 1.2 | 17.6 | 468 | 463 | 459 | 454 | 448 | 445 | -0.47143 | 1.295298 | 0.338161 | ||||||||
59 | 1.2 | 17.6 | 471 | 466 | 462 | 457 | 452 | 447 | -0.47714 | 1.303816 | 0.340023 | ||||||||
60 | 1.2 | 17.6 | 442 | 437 | 432 | 427 | 422 | 416 | -0.51429 | 1.219104 | 0.391959 | ||||||||
61 | 0.9 | 12.4 | 353 | 350 | 346 | 343 | 340 | 338 | -0.30857 | 0.979637 | 0.292663 | ||||||||
62 | 0.9 | 12.4 | 325 | 322 | 319 | 317 | 315 | 312 | -0.25143 | 0.903916 | 0.258442 | ||||||||
63 | 0.9 | 12.4 | 316 | 315 | 313 | 311 | 309 | 307 | -0.18571 | 0.885459 | 0.194874 | ||||||||
64 | 0.9 | 12.4 | 349 | 345 | 341 | 338 | 335 | 330 | -0.36571 | 0.964493 | 0.352306 | ||||||||
65 | 0.9 | 12.4 | 318 | 316 | 313 | 311 | 309 | 306 | -0.23714 | 0.886406 | 0.248573 | ||||||||
66 | 0.9 | 12.4 | 281 | 280 | 278 | 277 | 275 | 273 | -0.16 | 0.787496 | 0.188777 | ||||||||
67 | 0.9 | 12.4 | 292 | 290 | 288 | 287 | 286 | 283 | -0.16571 | 0.816837 | 0.188496 | ||||||||
68 | 0.9 | 12.4 | 338 | 336 | 333 | 331 | 328 | 326 | -0.24571 | 0.942723 | 0.242171 | ||||||||
69 | 0.9 | 12.4 | 325 | 323 | 321 | 320 | 318 | 315 | -0.18857 | 0.909595 | 0.192621 | ||||||||
70 | 0.9 | 12.4 | 347 | 344 | 341 | 339 | 337 | 333 | -0.26571 | 0.969983 | 0.254523 |
Like we used to say at Dahlgren, "In God we trust but all others bring data".He is some of the radar data from a range date earlier this month. I use the radar data to calculate both the mach number and the drag coefficient.
Dia
(m)mass (grains) range date 6/8/2024range (m) 0.0067 101.5time 1200 0 10 20 30 40 50Shot # Desired Mach IMR 4895 (grains) temp (K) 303.7056V0 (m/s) V10 V20 V30 V40 V50 dv/dx Mach Cd Mach CD 1 2.6 37.0press (inHG) 29.96 860 851 844 837 830 822 -0.74286 2.397988 0.284829average 2.381 0.290 2 2.6 37.0Humidity (%) 33 849 841 834 827 820 812 -0.72857 2.368987 0.282771confidence 0.020 0.005 3 2.6 37.0density (kg/m^3) 1.1575 857 848 841 833 826 818 -0.76857 2.388004 0.29592Mach CD 4 2.6 37.0 846 838 831 824 817 809 -0.72857 2.36043 0.283796average 2.573 0.283 5 2.6 37.0 858 850 842 835 828 820 -0.75143 2.392758 0.288745confidence 0.013 0.006 6 2.6 37.0range date 6/9/2024 842 834 826 819 812 804 -0.75143 2.347118 0.294359Mach CD 7 2.6 37.0time 1444 855 847 839 832 824 816 -0.77429 2.38325 0.298715average 2.138 0.298 8 2.6 37.0temp (K) 306.4833 848 840 833 826 818 811 -0.73714 2.365659 0.2865confidence 0.012 0.015 9 2.6 37.0press (inHG) 29.88 850 843 835 828 821 813 -0.73714 2.372315 0.285696Mach CD 10 2.6 37.0Humidity (%) 47 873 864 855 848 841 833 -0.78857 2.431267 0.298218average 1.783 0.417 11 2.75 39.7density (kg/m^3) 1.14023 923 915 906 899 891 884 -0.78286 2.564093 0.283678confidence 0.034 0.064 12 2.75 39.7 932 923 913 906 899 891 -0.81143 2.585863 0.291556Mach CD 13 2.75 39.7 929 920 910 904 896 888 -0.80857 2.577818 0.291436average 1.525 0.422 14 2.75 39.7 927 918 910 902 895 886 -0.80571 2.573558 0.290887confidence 0.028 0.061 15 2.75 39.7 930 921 912 906 899 891 -0.76286 2.583497 0.274354Mach CD 16 2.75 39.7 923 914 905 899 892 884 -0.76286 2.56362 0.276482average 1.263 0.405 17 2.75 39.7 931 922 914 907 900 891 -0.78 2.586336 0.280212confidence 0.065 0.074 18 2.75 39.7 916 907 899 893 885 876 -0.77714 2.544217 0.283807Mach CD 19 2.75 39.7 928 919 911 904 897 889 -0.76571 2.578291 0.275938average 0.905 0.241 20confidence 0.055 0.045 21 2 31.6 773 766 759 753 746 738 -0.68857 2.14621 0.298094Mach CD 22 2 31.6 771 764 758 752 745 738 -0.65143 2.142897 0.28245average #DIV/0! #DIV/0! 23 2 31.6 762 753 745 739 732 -0.74 2.118855 0.324494confidence #DIV/0! #DIV/0! 24 2 31.6 766 759 752 746 740 733 -0.65143 2.127753 0.284461Mach CD 25 2 31.6 773 765 758 752 744 737 -0.71143 2.14337 0.308397average #DIV/0! #DIV/0! 26 2 31.6 778 770 763 757 750 743 -0.68857 2.158514 0.296395confidence #DIV/0! #DIV/0! 27 2 31.6 773 766 759 753 746 739 -0.67429 2.146683 0.291845Mach CD 28 2 31.6 771 761 752 746 740 732 -0.75429 2.130592 0.328937average #DIV/0! #DIV/0! 29 2 31.6 760 753 746 741 735 728 -0.62571 2.112135 0.275252confidence #DIV/0! #DIV/0! 30 2 31.6 774 766 760 754 747 740 -0.66571 2.149049 0.287818 31 1.7 26.4 675 667 659 651 642 633 -0.83714 1.858471 0.418524 32 1.7 26.4 640 633 626 619 612 606 -0.68571 1.768079 0.360345 33 1.7 26.4 638 630 622 615 607 600 -0.76 1.756721 0.401964 34 1.7 26.4 641 635 629 622 617 610 -0.61714 1.776598 0.322755 35 1.7 26.4 639 628 618 609 600 590 -0.96571 1.74347 0.514649 36 1.7 26.4 642 631 621 611 602 590 -1.02 1.749622 0.541667 37 1.7 26.4 641 632 624 616 608 599 -0.82857 1.760507 0.437289 38 1.7 26.4 668 660 651 642 633 623 -0.9 1.834808 0.455752 39 1.7 26.4 663 655 645 639 631 623 -0.79429 1.82487 0.40441 40 1.7 26.4 635 629 623 617 611 606 -0.58571 1.76098 0.309035 41 1.5 22.9 553 546 539 533 526 518 -0.68857 1.521514 0.420484 42 1.5 22.9 558 551 543 536 529 519 -0.76571 1.531452 0.464558 43 1.5 22.9 571 566 560 554 549 543 -0.56286 1.58209 0.330555 44 1.5 22.9 557 548 539 531 522 512 -0.88857 1.518674 0.543631 45 1.5 22.9 534 526 518 510 502 -0.8 1.470875 0.505348 46 1.5 22.9 546 539 532 526 -0.67 1.521277 0.409207 47 1.5 22.9 567 562 557 551 546 540 -0.54 1.572625 0.31904 48 1.5 22.9 543 537 531 525 519 514 -0.58571 1.499744 0.362865 49 1.5 22.9 546 539 532 525 518 510 -0.71429 1.500217 0.442379 50 1.5 22.9 556 549 542 535 528 521 -0.7 1.529086 0.425347 51 1.2 17.6 500 495 490 485 480 476 -0.48571 1.384743 0.325903 52 1.2 17.6 432 427 423 418 414 409 -0.45429 1.194021 0.353503 53 1.2 17.6 438 431 424 417 412 410 -0.58286 1.198281 0.451939 54 1.2 17.6 493 487 482 476 470 465 -0.56286 1.35966 0.384631 55 1.2 17.6 422 417 411 406 402 397 -0.5 1.16184 0.399853 56 1.2 17.6 448 438 429 423 414 407 -0.80857 1.211059 0.62034 57 1.2 17.6 473 467 461 455 449 442 -0.61429 1.30003 0.439029 58 1.2 17.6 468 463 459 454 448 445 -0.47143 1.295298 0.338161 59 1.2 17.6 471 466 462 457 452 447 -0.47714 1.303816 0.340023 60 1.2 17.6 442 437 432 427 422 416 -0.51429 1.219104 0.391959 61 0.9 12.4 353 350 346 343 340 338 -0.30857 0.979637 0.292663 62 0.9 12.4 325 322 319 317 315 312 -0.25143 0.903916 0.258442 63 0.9 12.4 316 315 313 311 309 307 -0.18571 0.885459 0.194874 64 0.9 12.4 349 345 341 338 335 330 -0.36571 0.964493 0.352306 65 0.9 12.4 318 316 313 311 309 306 -0.23714 0.886406 0.248573 66 0.9 12.4 281 280 278 277 275 273 -0.16 0.787496 0.188777 67 0.9 12.4 292 290 288 287 286 283 -0.16571 0.816837 0.188496 68 0.9 12.4 338 336 333 331 328 326 -0.24571 0.942723 0.242171 69 0.9 12.4 325 323 321 320 318 315 -0.18857 0.909595 0.192621 70 0.9 12.4 347 344 341 339 337 333 -0.26571 0.969983 0.254523
If you are saying this is for your bullet, then this doesn't even match your plot. A cd of 0.422 at mach 1.525 is worse than the sierra 168 gr you have plottedHe is some of the radar data from a range date earlier this month. I use the radar data to calculate both the mach number and the drag coefficient.
Dia
(m)mass (grains) range date 6/8/2024range (m) 0.0067 101.5time 1200 0 10 20 30 40 50Shot # Desired Mach IMR 4895 (grains) temp (K) 303.7056V0 (m/s) V10 V20 V30 V40 V50 dv/dx Mach Cd Mach CD 1 2.6 37.0press (inHG) 29.96 860 851 844 837 830 822 -0.74286 2.397988 0.284829average 2.381 0.290 2 2.6 37.0Humidity (%) 33 849 841 834 827 820 812 -0.72857 2.368987 0.282771confidence 0.020 0.005 3 2.6 37.0density (kg/m^3) 1.1575 857 848 841 833 826 818 -0.76857 2.388004 0.29592Mach CD 4 2.6 37.0 846 838 831 824 817 809 -0.72857 2.36043 0.283796average 2.573 0.283 5 2.6 37.0 858 850 842 835 828 820 -0.75143 2.392758 0.288745confidence 0.013 0.006 6 2.6 37.0range date 6/9/2024 842 834 826 819 812 804 -0.75143 2.347118 0.294359Mach CD 7 2.6 37.0time 1444 855 847 839 832 824 816 -0.77429 2.38325 0.298715average 2.138 0.298 8 2.6 37.0temp (K) 306.4833 848 840 833 826 818 811 -0.73714 2.365659 0.2865confidence 0.012 0.015 9 2.6 37.0press (inHG) 29.88 850 843 835 828 821 813 -0.73714 2.372315 0.285696Mach CD 10 2.6 37.0Humidity (%) 47 873 864 855 848 841 833 -0.78857 2.431267 0.298218average 1.783 0.417 11 2.75 39.7density (kg/m^3) 1.14023 923 915 906 899 891 884 -0.78286 2.564093 0.283678confidence 0.034 0.064 12 2.75 39.7 932 923 913 906 899 891 -0.81143 2.585863 0.291556Mach CD 13 2.75 39.7 929 920 910 904 896 888 -0.80857 2.577818 0.291436average 1.525 0.422 14 2.75 39.7 927 918 910 902 895 886 -0.80571 2.573558 0.290887confidence 0.028 0.061 15 2.75 39.7 930 921 912 906 899 891 -0.76286 2.583497 0.274354Mach CD 16 2.75 39.7 923 914 905 899 892 884 -0.76286 2.56362 0.276482average 1.263 0.405 17 2.75 39.7 931 922 914 907 900 891 -0.78 2.586336 0.280212confidence 0.065 0.074 18 2.75 39.7 916 907 899 893 885 876 -0.77714 2.544217 0.283807Mach CD 19 2.75 39.7 928 919 911 904 897 889 -0.76571 2.578291 0.275938average 0.905 0.241 20confidence 0.055 0.045 21 2 31.6 773 766 759 753 746 738 -0.68857 2.14621 0.298094Mach CD 22 2 31.6 771 764 758 752 745 738 -0.65143 2.142897 0.28245average #DIV/0! #DIV/0! 23 2 31.6 762 753 745 739 732 -0.74 2.118855 0.324494confidence #DIV/0! #DIV/0! 24 2 31.6 766 759 752 746 740 733 -0.65143 2.127753 0.284461Mach CD 25 2 31.6 773 765 758 752 744 737 -0.71143 2.14337 0.308397average #DIV/0! #DIV/0! 26 2 31.6 778 770 763 757 750 743 -0.68857 2.158514 0.296395confidence #DIV/0! #DIV/0! 27 2 31.6 773 766 759 753 746 739 -0.67429 2.146683 0.291845Mach CD 28 2 31.6 771 761 752 746 740 732 -0.75429 2.130592 0.328937average #DIV/0! #DIV/0! 29 2 31.6 760 753 746 741 735 728 -0.62571 2.112135 0.275252confidence #DIV/0! #DIV/0! 30 2 31.6 774 766 760 754 747 740 -0.66571 2.149049 0.287818 31 1.7 26.4 675 667 659 651 642 633 -0.83714 1.858471 0.418524 32 1.7 26.4 640 633 626 619 612 606 -0.68571 1.768079 0.360345 33 1.7 26.4 638 630 622 615 607 600 -0.76 1.756721 0.401964 34 1.7 26.4 641 635 629 622 617 610 -0.61714 1.776598 0.322755 35 1.7 26.4 639 628 618 609 600 590 -0.96571 1.74347 0.514649 36 1.7 26.4 642 631 621 611 602 590 -1.02 1.749622 0.541667 37 1.7 26.4 641 632 624 616 608 599 -0.82857 1.760507 0.437289 38 1.7 26.4 668 660 651 642 633 623 -0.9 1.834808 0.455752 39 1.7 26.4 663 655 645 639 631 623 -0.79429 1.82487 0.40441 40 1.7 26.4 635 629 623 617 611 606 -0.58571 1.76098 0.309035 41 1.5 22.9 553 546 539 533 526 518 -0.68857 1.521514 0.420484 42 1.5 22.9 558 551 543 536 529 519 -0.76571 1.531452 0.464558 43 1.5 22.9 571 566 560 554 549 543 -0.56286 1.58209 0.330555 44 1.5 22.9 557 548 539 531 522 512 -0.88857 1.518674 0.543631 45 1.5 22.9 534 526 518 510 502 -0.8 1.470875 0.505348 46 1.5 22.9 546 539 532 526 -0.67 1.521277 0.409207 47 1.5 22.9 567 562 557 551 546 540 -0.54 1.572625 0.31904 48 1.5 22.9 543 537 531 525 519 514 -0.58571 1.499744 0.362865 49 1.5 22.9 546 539 532 525 518 510 -0.71429 1.500217 0.442379 50 1.5 22.9 556 549 542 535 528 521 -0.7 1.529086 0.425347 51 1.2 17.6 500 495 490 485 480 476 -0.48571 1.384743 0.325903 52 1.2 17.6 432 427 423 418 414 409 -0.45429 1.194021 0.353503 53 1.2 17.6 438 431 424 417 412 410 -0.58286 1.198281 0.451939 54 1.2 17.6 493 487 482 476 470 465 -0.56286 1.35966 0.384631 55 1.2 17.6 422 417 411 406 402 397 -0.5 1.16184 0.399853 56 1.2 17.6 448 438 429 423 414 407 -0.80857 1.211059 0.62034 57 1.2 17.6 473 467 461 455 449 442 -0.61429 1.30003 0.439029 58 1.2 17.6 468 463 459 454 448 445 -0.47143 1.295298 0.338161 59 1.2 17.6 471 466 462 457 452 447 -0.47714 1.303816 0.340023 60 1.2 17.6 442 437 432 427 422 416 -0.51429 1.219104 0.391959 61 0.9 12.4 353 350 346 343 340 338 -0.30857 0.979637 0.292663 62 0.9 12.4 325 322 319 317 315 312 -0.25143 0.903916 0.258442 63 0.9 12.4 316 315 313 311 309 307 -0.18571 0.885459 0.194874 64 0.9 12.4 349 345 341 338 335 330 -0.36571 0.964493 0.352306 65 0.9 12.4 318 316 313 311 309 306 -0.23714 0.886406 0.248573 66 0.9 12.4 281 280 278 277 275 273 -0.16 0.787496 0.188777 67 0.9 12.4 292 290 288 287 286 283 -0.16571 0.816837 0.188496 68 0.9 12.4 338 336 333 331 328 326 -0.24571 0.942723 0.242171 69 0.9 12.4 325 323 321 320 318 315 -0.18857 0.909595 0.192621 70 0.9 12.4 347 344 341 339 337 333 -0.26571 0.969983 0.254523
Again what you posted is not data, its just a tabular form of your little plot you showed already. Presenting the same data in a different format and calling it something new is fraud in science papers
You're really good at data analysis! Yes, this data is where I discovered that the rounds started to get marginally stable below Mach 2.2.If you are saying this is for your bullet, then this doesn't even match your plot. A cd of 0.422 at mach 1.525 is worse than the sierra 168 gr you have plotted
But no response as to why your data is showing a cd of above 0.4 at mach 1.5 when your plot clearly shows around 0.325?You're really good at data analysis! Yes, this data is where I discovered that the rounds started to get marginally stable below Mach 2.2.
Sorry, I thought I was being clear. When the bullet becomes marginally stable it's epicyclic motion (the wobble while flying) increases and the drag increases. If you plot the data, you will see that above Mach 2.2 the rounds are tightly grouped but below that the data spreads out vertically. This is a clear sign of losing stability.But no response as to why your data is showing a cd of above 0.4 at mach 1.5 when your plot clearly shows around 0.325?
Are you throwing away data here?
So then why does your plot for mach 1.5 to say 0.325ish cd instead of your data that says 0.422ish? Smells like fraud to meSorry, I thought I was being clear. When the bullet becomes marginally stable it's epicyclic motion (the wobble while flying) increases and the drag increases. If you plot the data, you will see that above Mach 2.2 the rounds are tightly grouped but below that the data spreads out vertically. This is a clear sign of losing stability.
You are comparing a 140 grain bullet to a 102 grain bullet.So then how did you get the data in your plot for mach 1.5 to say 0.325ish cd instead of your data that says 0.422ish? Smells like fraud to me
The drag curve is a combination of hundreds of test firings. The lower Mach number data was collected on another day. You just wanted to see data so I pulled up one of my recent tests.So then why does your plot for mach 1.5 to say 0.325ish cd instead of your data that says 0.422ish? Smells like fraud to me
Edit to add: you have a whole region of cd above 0.4 from mach 1.2 to 1.7, yet your plot never goes above 0.35. Explain that