.45GAP: Hodgdon HP-38 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
Rainier plated 200 grain Flat Points.
OAL: 1.067
|
Grains |
High Velocity |
Low Velocity |
Extreme Spread |
Average Velocity |
Standard Deviation |
Energy Avg |
Power Factor |
|
4.5 |
708 |
636 |
72 |
666 |
27 |
196 |
133 |
|
4.7 |
722 |
668 |
54 |
705 |
17 |
220 |
141 |
|
4.9 |
769 |
694 |
74 |
733 |
29 |
238 |
146 |
Glock 37 with standard 4.5” barrel
Speer brass
Winchester small pistol primers
Rainier plated 185 grain Flat Points.
OAL: 1.070
|
Grains |
High Velocity |
Low Velocity |
Extreme Spread |
Average Velocity |
Standard Deviation |
Energy Avg |
Power Factor |
|
4.9 |
731 |
644 |
86 |
699 |
31 |
200 |
129 |
|
5.1 |
790 |
696 |
93 |
753 |
31 |
232 |
139 |
|
5.3 |
793 |
739 |
54 |
764 |
16 |
239 |
141 |
|
5.5 |
840 |
800 |
40 |
816 |
12 |
273 |
150 |
safety, safety, safety
.45GAP (.45 GAP) Caliber Page; Document Version 04/05/04