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Alliant Power Pistol

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.     Power Pistol is one of the best consistent, high velocity powders that is geared very well for full power 357 Sig loads.

2.     It has a fairly healthy bright flash about 1 ft. wide, somewhat similar to Blue Dot.

 

Glock 35 with a 5.32" KKM 357 Sig barrel.

124 grain Rainier flat point bullets; Winchester primers; Starline brass; 1.135 OAL. No cannelure groove used.

Alliant Power Pistol

Grains

High Velocity

Low Velocity

Extreme Spread

Average Velocity

Standard Deviation

7.3

1,235

1,188

47

1,215

21

8.3

1,380

1,324

56

1,359

22

8.6

1,401

1,367

34

1,389

12

8.9

1,435

1,395

40

1,418

13

9.2

1,492

1,442

50

1,461

16

9.5

1,501

1,441

60

1,477

22

 

Steyr M357 with a standard 4" barrel

Alliant Power Pistol Powder

Starline brass

Winchester primers

West Coast plated 124 grain flat point bullets

I used a cannelure groove and roll crimp

Grains

High Velocity

Low Velocity

Extreme Spread

Average Velocity

Standard Deviation

7.4

1209

1163

46

1183

15

7.7

1220

1213

23

1221

8

8.0

1270

1239

31

1252

10

8.3

1296

1268

28

1284

9

8.6

1334

1304

30

1320

12

8.9

1366

1328

38

1345

12

9.2

1390

1365

25

1376

9

9.5

1421

1392

29

1406

10

 

I had an older set of reloaded ammo using Rainier Plated Bullets. I did not have a cannelure groove on the bullets but I did have a tight crimp that cut a crimp ring into the bullets. So here is another set of data using Power Pistol:

Grains

High Velocity

Low Velocity

Extreme Spread

Average Velocity

Standard Deviation

8.3

1263

1235

28

1250

--

8.6

1311

1297

14

1303

5

8.9

1365

1322

43

1352

15

9.2

1411

1381

30

1396

10

9.5

1435

1380

55

1404

23

 

Steyr M357 with a standard 4" barrel

Alliant Power Pistol Powder

Starline brass

Winchester primers

Oregon Trail Laser-Cast Silver 122 grain flat point bullets

No cannelure groove, and I used a strong crimp to cut a crimp groove into the softer (compared to a plated bullet) lead bullet

Grains

High Velocity

Low Velocity

Extreme Spread

Average Velocity

Standard Deviation

8.5

1373

1338

35

1354

11

8.8

1397

1371

26

1384

8

9.1

1408

1377

31

1392

10

9.4

1453

1409

44

1429

16

Version 02/25/01 from Pete's 357 SIG Caliber Page

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