New to Shooters Forum. Great site. Just picked up my first 6.5 Creedmoor and am looking for a slow powder to push 143-147 grain bullets down a 24" barrel. With the shortage of RL26 I was wondering if anyone has any data on IMR7828 or IMR7828SSC. I've had great results in my 300win mag with 190 and 200 grain bullets with IMR7828. Curious to see what kind of results anyone's had using it. Thanks
Newbie Load question for 6.5 Creedmoor
- Thread starter Thorshammer300
- Start date
Dusty Stevens
Shiner
Seek out the carolina load on here and go shoot.
I did, shot in low .2s at 100yds for me
44gr at my mag length of 2.835
44.6gr at 2.80
I still have h4831sc left and 50 pieces of prepared brass and was planning on doing just that.
I need to shoot it at distance and see how they hold up.
Thanks for the input everyone. Gives me something to think about. I can find data on the superformance, and the H4831sc. Do you have any load data on the H1000 for starting loads? Thanks again
I don't have any real world experience with the components you're inquiring about.
But I have Quickload, tho not the latest version so it doesn't have the 143/147 Hornady bullets.
I can run some #'s with a custom 147 gr bullet ( at 1.440" long, pretty close to the 147eldm) with H-4831sc and IMR-7828ssc which might give you some idea where to start and maybe where you might start encountering hints of pressure.
COAL can make a difference when it comes to pressure and (obviously) how much powder can fit.
But I have Quickload, tho not the latest version so it doesn't have the 143/147 Hornady bullets.
I can run some #'s with a custom 147 gr bullet ( at 1.440" long, pretty close to the 147eldm) with H-4831sc and IMR-7828ssc which might give you some idea where to start and maybe where you might start encountering hints of pressure.
COAL can make a difference when it comes to pressure and (obviously) how much powder can fit.
Cartridge : 6.5 Creedmoor Hornady
Bullet : .264, Custom 147 gr (1.440")
Useable Case Capaci: 46.357 grain H2O = 3.010 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 7828 SSC
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 85 37.20 2213 1598 30378 8343 86.5 1.647
-18.0 87 38.13 2272 1685 32522 8642 88.1 1.601
-16.0 89 39.06 2333 1776 34827 8932 89.5 1.556
-14.0 91 39.99 2393 1870 37309 9213 90.9 1.511
-12.0 93 40.92 2454 1966 39984 9481 92.2 1.462
-10.0 95 41.85 2516 2066 42865 9737 93.4 1.414
-08.0 97 42.78 2577 2168 45988 9978 94.6 1.368
-06.0 100 43.71 2639 2273 49358 10203 95.6 1.324
-04.0 102 44.64 2701 2382 53013 10410 96.5 1.282
-02.0 104 45.57 2763 2492 56978 10599 97.3 1.240 ! Near Maximum !
+00.0 106 46.50 2826 2606 61287 10767 98.1 1.200 ! Near Maximum !
+02.0 108 47.43 2888 2722 65983 10913 98.7 1.162 !DANGEROUS LOAD-DO NOT USE!
---------------------------------------------------------------------------------------------------------
MAX = 00.0
106% case fill
46.5 gr IMR-7828ssc
2,826 fps
2,606 ft-lbs Energy
61,287 PSI Chamber Pressure
----
98.1% powder burned.
Bullet : .264, Custom 147 gr (1.440")
Useable Case Capaci: 46.357 grain H2O = 3.010 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 7828 SSC
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 85 37.20 2213 1598 30378 8343 86.5 1.647
-18.0 87 38.13 2272 1685 32522 8642 88.1 1.601
-16.0 89 39.06 2333 1776 34827 8932 89.5 1.556
-14.0 91 39.99 2393 1870 37309 9213 90.9 1.511
-12.0 93 40.92 2454 1966 39984 9481 92.2 1.462
-10.0 95 41.85 2516 2066 42865 9737 93.4 1.414
-08.0 97 42.78 2577 2168 45988 9978 94.6 1.368
-06.0 100 43.71 2639 2273 49358 10203 95.6 1.324
-04.0 102 44.64 2701 2382 53013 10410 96.5 1.282
-02.0 104 45.57 2763 2492 56978 10599 97.3 1.240 ! Near Maximum !
+00.0 106 46.50 2826 2606 61287 10767 98.1 1.200 ! Near Maximum !
+02.0 108 47.43 2888 2722 65983 10913 98.7 1.162 !DANGEROUS LOAD-DO NOT USE!
---------------------------------------------------------------------------------------------------------
MAX = 00.0
106% case fill
46.5 gr IMR-7828ssc
2,826 fps
2,606 ft-lbs Energy
61,287 PSI Chamber Pressure
----
98.1% powder burned.
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Cartridge : 6.5 Creedmoor Hornady
Bullet : .264, Custom 147 gr (1.440")
Useable Case Capaci: 46.357 grain H2O = 3.010 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon H4831 SC
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 84 36.40 2177 1546 30845 7764 86.6 1.652
-18.0 86 37.31 2233 1627 32982 8030 87.9 1.606
-16.0 88 38.22 2289 1710 35280 8291 89.2 1.561
-14.0 91 39.13 2346 1796 37746 8545 90.5 1.516
-12.0 93 40.04 2403 1885 40396 8790 91.7 1.468
-10.0 95 40.95 2460 1976 43249 9027 92.8 1.422
-08.0 97 41.86 2518 2070 46319 9253 93.8 1.377
-06.0 99 42.77 2576 2166 49633 9468 94.8 1.334
-04.0 101 43.68 2634 2264 53213 9671 95.7 1.293
-02.0 103 44.59 2692 2366 57084 9861 96.5 1.253 ! Near Maximum !
+00.0 105 45.50 2750 2469 61280 10036 97.3 1.214 ! Near Maximum !
+02.0 107 46.41 2809 2575 65832 10195 97.9 1.177 !DANGEROUS LOAD-DO NOT USE!
===============================================
MAX load
105% case fill
45.5 gr H-4831sc
2,750 fps
2,469 ft-lbs Energy
61,280 PSI Chamber Pressure
----
97.3% powder burned.
Bullet : .264, Custom 147 gr (1.440")
Useable Case Capaci: 46.357 grain H2O = 3.010 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Hodgdon H4831 SC
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-20.0 84 36.40 2177 1546 30845 7764 86.6 1.652
-18.0 86 37.31 2233 1627 32982 8030 87.9 1.606
-16.0 88 38.22 2289 1710 35280 8291 89.2 1.561
-14.0 91 39.13 2346 1796 37746 8545 90.5 1.516
-12.0 93 40.04 2403 1885 40396 8790 91.7 1.468
-10.0 95 40.95 2460 1976 43249 9027 92.8 1.422
-08.0 97 41.86 2518 2070 46319 9253 93.8 1.377
-06.0 99 42.77 2576 2166 49633 9468 94.8 1.334
-04.0 101 43.68 2634 2264 53213 9671 95.7 1.293
-02.0 103 44.59 2692 2366 57084 9861 96.5 1.253 ! Near Maximum !
+00.0 105 45.50 2750 2469 61280 10036 97.3 1.214 ! Near Maximum !
+02.0 107 46.41 2809 2575 65832 10195 97.9 1.177 !DANGEROUS LOAD-DO NOT USE!
===============================================
MAX load
105% case fill
45.5 gr H-4831sc
2,750 fps
2,469 ft-lbs Energy
61,280 PSI Chamber Pressure
----
97.3% powder burned.
H-1000 is too slow. You'll be crunching the powder before even reaching 50,000 psi.
Quickload shows
47 gr H-1000 = 111% case fill, 51,500 psi, 2,650 fps.
48 gr H-1000 = 114% case fill, 55,750 psi, 2,715 fps.
Now worth the time and components in my opinion.
In my experience... H-4831sc has ALWAYS been a very accurate powder, with no exceptions, and that's what I would try first.
Quickload shows
47 gr H-1000 = 111% case fill, 51,500 psi, 2,650 fps.
48 gr H-1000 = 114% case fill, 55,750 psi, 2,715 fps.
Now worth the time and components in my opinion.
In my experience... H-4831sc has ALWAYS been a very accurate powder, with no exceptions, and that's what I would try first.
That is awesome! Thanks for running the numbers. I hope to have everything rounded up by next weekend to start shooting. Thanks again.
Just shot 29 rounds today of the ELD-M 147 with Alpha brass and 43.5gr of SuperPerformance at 60f temp. Stock RPR with 24" barrel.
Couple outliers due from too much dwell time in the chamber, no pressure signs.
Rnds=29 Avg=2663 hi=2693 lo=2625 sd=14 es=68
Almost all the rounds were actually right around 2665, just a few outcasts pushed that hi/low.
I had a few hard to seat rounds which I just kept in the mix and I had a loose grip on a few shots.
There was room in the case for a little more powder if I wanted as well, but this looks to be a node on my gun, so I'm going with it.
Edit: Created graph, little more variance than I thought, still may be my poor shoulder tension.
Couple outliers due from too much dwell time in the chamber, no pressure signs.
Rnds=29 Avg=2663 hi=2693 lo=2625 sd=14 es=68
Almost all the rounds were actually right around 2665, just a few outcasts pushed that hi/low.
I had a few hard to seat rounds which I just kept in the mix and I had a loose grip on a few shots.
There was room in the case for a little more powder if I wanted as well, but this looks to be a node on my gun, so I'm going with it.
Edit: Created graph, little more variance than I thought, still may be my poor shoulder tension.
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Sounds like you are dialed in. Does the Alpha brass use small or large rifle primers? I'm trying to decide on brass. We have Lapua, Starline, and Hornady available locally. I know Lapua is top dog and uses small primers but it's way more expensive. The Starline and Hornady available here use large primers. What is the advantage of small primers over large primers and vice-versa?
I have the large, but it's available in both. Larger has a larger flash hole, perhaps affecting ignition consistency? Just guessing, lots of people use the small on Lapua.
Perhaps longer life on larger since the pressure is spread out over larger area?
https://alphamunitions.com/product/6-5-creedmoor/
https://alphamunitions.com/product/6-5-creedmoor-srp-small-rifle-primer/
Perhaps longer life on larger since the pressure is spread out over larger area?
https://alphamunitions.com/product/6-5-creedmoor/
https://alphamunitions.com/product/6-5-creedmoor-srp-small-rifle-primer/
I have about half a jug left of 7828ssc that I got during the Obama powder panic. Might be an unusually fast burning lot but I have got some really good velocities from it with the heavies in both 6.5x47 and 6.5 Creedmoor.
John
When shooting loads at the MAX safe powder charges, the small rifle primer brass will hold the primer pockets tight for many many reload cycles. The Larger primer pockets usually open up after a handful of reloads with MAX charge weights.
With small rifle primers in the 6.5creed and especially the 6creed & 243win using slow burning powders, it's wise to use Magnum primers in cold temps. I use CCI-450 and Fed 205m are good in all temps.
Fed 205m might not be marketed as a magnum primer, but I think it's more of a magnum primer than not.
Another talked about advantage to small rifle primers in mid size cases is more uniform ignition.
For the few (including me) who shoot in extremely cold temps, not only large primers are better, but primers with softer cups are more ideal. In those kinda temps I use Fed 210m/215m large primers and 205m for small primers
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