32ACP (aka 7.65 Browning) was a very popular defensive "pocket pistol" up until the 1970's. On one web source, someone called it the Miata of calibers because it was small, easy to control, and lots of fun. This is true ! There are lots of European sources for factory ammo, including Fiocchi, but it can get expensive. For American reloaders Hornady, Berry and many others make bullets. However some of these are on the heavy side and made expressly for the many competing 32 caliber cartridges. StarLine can supply brass.
Most of the pistols that fire 32ACP cartridge fire from an un-locked breach, IOW they are "blow back" operated. Therefore faster powders are preferred with light bullets, and the fastest powders seem to work the best. SAAMI max OAL is 0.984", but these light bullets are seated about 0.03" shorter based on experience with 9mm. 32ACP is a true straight walled cartridge, so the taper crimp is set at 0.333" to restore a perfectly straight case wall.
Equipment
Caliber: 32ACP
Bullets: Berry 71gr plated RN
Brass: StarLine (new)
Primer: Winchester Small Pistol WSP
OAL: 0.950"
Pistol: Beretta Model 81
Qty: 8 rounds each, slow fired
Weather: 60F and sunny
Chrono: ProChrono DLX
Max Velocity: ~830 fps (calculated)
- Powder: VihtaVuori N310
Load Avg Vel SD
1.7gr 836 25
1.8 944 22
1.9 891 13
2.0 993 11
2.1 1033 12
N310 Notes
• Meters great
• Low smoke
• Great accuracy
• Best results so far
- Powder: VihtaVuori N320
Load Avg Vel SD
1.3gr 423
1.5 481
1.7 575
1.9 613
2.1 638
2.2 773 20
2.3 802 21
2.4 950 33
N320 Notes
• Meters great, just like N320 always does
• Seems to be slightly too slow
• Good accuracy
- Powder: AA No.2
Load Avg Vel SD
2.4gr 957
2.5 958
2.6 934
No.2 Notes
• Obvious light issues with the chrono. Retest needed.
- Powder: Vectan Ba10
Load Avg Vel SD
1.2gr 673 18
1.3 744 52
1.4 727 08
1.5 756 Data lost
1.6 837 26
1.7 876 35
Ba10 Notes
• Works very nicely
• Fabulous accuracy
- Powder: Sport Pistol
Load Avg Vel SD
1.5gr 661 15
1.7 718 21
1.9 765 17
Sport Pistol Notes
• Works OK
- Powder: IMR 7625
Load Avg Vel SD
1.4gr 345 15
1.6 401 06
1.8 462 17
2.0 545 20
2.2 624 15
2.3 710 07
2.4 741 50
2.5 757 37
7625 Notes
• Works OK
- Powder: Ramshot Competition
Load Avg Vel SD
1.5gr 757 24
1.7 826 20
1.9 875 20
Competition Notes
• Works OK
• Loads are minuscule