.45GAP: Accurate Arms No. 5 Powder
Disclaimer: The powder charge information (in black) was taken from gun powder companies, gun powder distributors, and/or published handloading data (paper and/or electronic) to the best of my knowledge – not responsible for typos; Always refer to published official handloading data for verification.
Pressures may differ significantly due to component variations and whether a test barrel or an actual pistol was used for testing purposes. I am not responsible for your actions. Powder charges that are too light or too heavy can both cause pressure problems. Use your own common sense. If you wish to use any of the following data, use at your own risk! You are responsible for your own actions.
WARNING: Red lettered data in charts refers to loads that have not been officially pressure checked and may be beyond maximum pressure limits --- extreme caution required.
Glock 37 with standard 4.5” barrel
Speer brass
Winchester small pistol primers
West Coast Plated 230 Grain Round Nose Bullets
OAL: 1.132
|
Grains |
High Velocity |
Low Velocity |
Extreme Spread |
Average Velocity |
Standard Deviation |
Energy Avg. |
Power Factor Avg. |
Notes |
|
6.2 |
667 |
639 |
27 |
655 |
9 |
219 |
150 |
USPSA Minor Power |
|
6.4 |
699 |
657 |
42 |
679 |
13 |
235 |
156 |
|
|
6.6 |
717 |
696 |
21 |
705 |
7 |
253 |
162 |
|
|
6.8 |
758 |
719 |
39 |
734 |
15 |
275 |
168 |
|
|
7.0 |
805 |
750 |
55 |
770 |
20 |
302 |
177 |
USPSA Major Power |
|
7.2 |
822 |
770 |
51 |
790 |
17 |
318 |
181 |
|
Maximum case expansion (reused brass): .477
Red = Danger: Individually worked up loads; Red lettered charges have not officially been pressure checked out of a Glock G.A.P. pistol!
One person reloaded with 7.2grs AA#5 with a 230 FMJ at 1.133 and Fed SPP. The cases were on their 4th reload. About 1/2 of the cases were showing signs of smilies (creases in the brass). He decided to back down to 6.8grs. This is just a warning that various components in different guns can act quite differently so always start low and work up slowly. And if you reload in the hot max power arena, the brass will definitely wear out quicker.
Glock 37 with standard 4.5” barrel
Speer brass
Winchester small pistol primers
West Coast Plated 225 Grain Flat Point Bullets
OAL: 1.067
|
Grains |
High Velocity |
Low Velocity |
Extreme Spread |
Average Velocity |
Standard Deviation |
Energy Avg. |
Power Factor Avg. |
Notes |
|
6.2 |
680 |
627 |
52 |
668 |
17 |
222 |
150 |
USPSA Minor Power |
|
6.4 |
713 |
654 |
59 |
695 |
18 |
241 |
156 |
|
|
6.6 |
760 |
736 |
23 |
747 |
7 |
278 |
168 |
|
|
6.8 |
778 |
741 |
37 |
758 |
13 |
287 |
170 |
USPSA Major Power |
|
7.0 |
793 |
770 |
23 |
777 |
7 |
301 |
174 |
|
|
7.2 |
815 |
782 |
33 |
801 |
12 |
320 |
180 |
|
Maximum case expansion (reused brass): .477
Red = Danger: Individually worked up loads; Red lettered charges have not officially been pressure checked out of a Glock G.A.P. pistol!
Glock 37 with standard 4.5” barrel
Speer brass
Winchester small pistol primers
West Coast Plated 200 Grain Flat Point Bullets
OAL: 1.067
|
Grains |
High Velocity |
Low Velocity |
Extreme Spread |
Average Velocity |
Standard Deviation |
Energy Avg. |
Power Factor Avg. |
Notes |
|
7.0 |
767 |
737 |
30 |
749 |
11 |
249 |
149 |
USPSA Minor Power |
|
7.2 |
773 |
747 |
26 |
760 |
8 |
256 |
152 |
|
|
7.4 |
821 |
764 |
57 |
796 |
23 |
281 |
159 |
|
|
7.6 |
826 |
797 |
29 |
814 |
9 |
294 |
162 |
|
|
7.8 |
837 |
786 |
51 |
818 |
16 |
297 |
163 |
|
|
8.0 |
859 |
805 |
54 |
833 |
18 |
308 |
166 |
|
|
8.2 |
881 |
831 |
49 |
854 |
15 |
323 |
170 |
USPSA Major Power |
|
8.4 |
910 |
848 |
61 |
890 |
23 |
351 |
178 |
|
Maximum case expansion (reused brass): .477
Red = Danger: Individually worked up loads; Red lettered charges have not officially been pressure checked out of a Glock G.A.P. pistol!
Glock 37 with standard 4.5” barrel
Speer brass
Winchester small pistol primers
West Coast Plated 185 Grain Flat Point Bullets
OAL: 1.070
|
Grains |
High Velocity |
Low Velocity |
Extreme Spread |
Average Velocity |
Standard Deviation |
Energy Avg. |
Power Factor Avg. |
Notes |
|
8.2 |
896 |
854 |
42 |
872 |
14 |
312 |
161 |
USPSA Minor Power |
|
8.4 |
903 |
853 |
50 |
878 |
18 |
316 |
162 |
|
|
8.6 |
936 |
898 |
38 |
915 |
13 |
343 |
169 |
|
|
8.8 |
973 |
916 |
56 |
947 |
17 |
368 |
175 |
USPSA Major Power |
|
9.0 |
982 |
934 |
48 |
956 |
17 |
375 |
176 |
|
|
9.2 |
1005 |
950 |
54 |
975 |
21 |
390 |
180 |
|
|
9.4 |
1019 |
971 |
48 |
995 |
18 |
406 |
184 |
|
Maximum case expansion (reused brass): .477
Red = Danger: Individually worked up loads; Red lettered charges have not officially been pressure checked out of a Glock G.A.P. pistol!
Contributed by petej88 of www.glocktalk.com Bull Dawgs Club
safety, safety, safety
.45GAP (.45 GAP) Caliber Page; Document Version 09/10/04