.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

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.45GAP (.45 GAP) Caliber Page; Document Version 09/10/04