jschroed
I just purchased Quickload a few weeks ago and if I had to do it over I would have spent the money elsewhere and not bothered.
If you take loading data from reloading manuals and enter case capacity, OAL, trim length etc. you will get some very high and low chamber pressure readings.
Some of the data will be very close to the manuals and the load and pressure data it spits out is useful. And some of the data is down right scary.
I have a Stevens 200 .223 that has a longer throat than my two AR15 rifles and without entering data like this into Quickload even its "ball park" estimates will be far off.
I was just checking the 35 Remington page in my Hornady manual and entered the max load of 748 (42.7 gr) and OAL, case length, case capacity and got this.
The max rated chamber should be approximately 35,000 cup or 40,000 psi.
Cartridge : .35 Rem.
Bullet : .358, 200, Hornady SPSP 3510
Useable Case Capaci: 39.605 grain H2O = 2.571 cm³
Cartridge O.A.L. L6: 2.540 inch = 64.52 mm
Barrel Length : 20.0 inch = 508.0 mm
Powder : Winchester 748
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 87 34.16 1856 1530 24971 4470 77.6 1.412
-18.0 89 35.01 1906 1612 26687 4646 79.2 1.374
-16.0 91 35.87 1956 1699 28535 4820 80.8 1.336
-14.0 93 36.72 2007 1788 30532 4992 82.3 1.299
-12.0 96 37.58 2058 1881 32675 5161 83.7 1.263
-10.0 98 38.43 2110 1977 35015 5327 85.1 1.228 ! Near Maximum !
-08.0 100 39.28 2163 2077 37545 5487 86.5 1.193 ! Near Maximum !
-06.0 102 40.14 2216 2180 40285 5643 87.9 1.155 !DANGEROUS LOAD-DO NOT USE!
-04.0 104 40.99 2269 2287 43265 5793 89.1 1.120 !DANGEROUS LOAD-DO NOT USE!
-02.0 107 41.85 2323 2397 46512 5936 90.4 1.084 !DANGEROUS LOAD-DO NOT USE!
+00.0 109 42.70 2378 2510 50056 6072 91.5 1.051 !DANGEROUS LOAD-DO NOT USE!
+02.0 111 43.55 2433 2628 53938 6200 92.6 1.018 !DANGEROUS LOAD-DO NOT USE!
+04.0 113 44.41 2488 2749 58203 6318 93.7 0.986 !DANGEROUS LOAD-DO NOT USE!
+06.0 115 45.26 2544 2873 62898 6427 94.6 0.955 !DANGEROUS LOAD-DO NOT USE!
+08.0 117 46.12 2600 3002 68086 6525 95.5 0.925 !DANGEROUS LOAD-DO NOT USE!
+10.0 120 46.97 2657 3135 73840 6611 96.4 0.895 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 109 42.70 2529 2840 60429 6224 97.6 0.969 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 109 42.70 2190 2130 40945 5593 81.7 1.156 !DANGEROUS LOAD-DO NOT USE!
The pressure should be at or below 40,000 psi and the manual gives 2050 fps for 42.7 grains of 748 powder.
Quickload spit out a pressure reading 10,000 psi "ABOVE" the rated chamber pressure of the 35 Remington and the data came from the Hornady manual.????