Accurate
Arms #7
Disclaimer: All of the following powder
charges were taken from reloading manuals produced by gun powder companies or
other reloading manuals that may vary in powder charges greatly. Various
components combined, make all the difference in the world. I am not responsible
for your actions. Always refer to official reloading manuals when reloading. As
usual, I must say that this information is what works for me. Use your own
common sense. You are responsible for your own actions!
1. The maximum load for AA#7 is 11.0 grains
according to the Accurate Arms Manual. The Speer Reloading Manual states 12.3 grains is the maximum. Obviously, these huge
differences are related to the various components being used. So be careful.
You guessed it: You're responsible for your own actions. I generally prefer to
use light to medium loads, although the spec freaks out there aren't happy
unless they see the maximum capabilities too.
2. AA#7 has a wide velocity range making it
very versatile.
Glock 31 with standard 4.5" barrel
Starline brass
Winchester primers
West Coast plated 124 grain flat point
bullets
Light cannelure
groove and a strong crimp
OAL: 1.137
|
Grains
|
High Velocity
|
Low Velocity
|
Extreme Spread
|
Average Velocity
|
Standard Deviation
|
|
9.6
|
1188
|
1146
|
42
|
1164
|
17
|
|
9.9
|
1235
|
1181
|
54
|
1216
|
21
|
|
10.2
|
1288
|
1277
|
11
|
1281
|
4
|
|
10.5
|
1308
|
1283
|
25
|
1295
|
-
|
|
10.8
|
1350
|
1316
|
34
|
1336
|
12
|
|
11.1
|
1378
|
1355
|
23
|
1367
|
8
|
|
11.4
|
1411
|
1365
|
46
|
1385
|
16
|
|
11.7
|
1422
|
1411
|
11
|
1416
|
4
|
Steyr M357 with standard 4" barrel
Starline brass
Winchester primers
Rainier plated 124 grain flat point bullets
Light cannelure
groove and a strong crimp
OAL: 1.135
|
Grains
|
High Velocity
|
Low Velocity
|
Extreme Spread
|
Average Velocity
|
Standard Deviation
|
|
10.5
|
1233
|
1204
|
29
|
1223
|
11
|
|
10.9
|
1289
|
1245
|
44
|
1258
|
17
|
|
11.3
|
1303
|
1253
|
50
|
1278
|
18
|
|
11.7
|
1340
|
1316
|
24
|
1323
|
9
|
Version 05/20/01 from Pete's 357 SIG Caliber Page