.32 ACP ...have to deep seat to .905 with RCBS 32-77-RN mold ???

[10mmShooter]

Hey Guys,

Just loading up a few .32 acp for my 1914 7,65 Mauser, I loaded the usual 71g FMJ with 2.2 gr of WW231 at COAL .960 inches, and some 60 g Hornady XTP HPs with 2.2g of WW231 at COAL of .915 inches. They all chamber and will cycle as I manually operate the slide.

Problem is the Lead RCBS 32-77-RN bullets I cast today, they drop great right at 79g and I run them through the sizer at .312 .....but

I have to seat them all the way back to .905 inch COAL (this is basically seating them all the to top of the first band) otherwise the slide will not close fully, I removed the barrel and checked the chamber...its just snug, that first band will stop the slide from closing if I don't seat them all the way back. Oh yes and all crimped to .332 just like the jacketed bullets that do chamber(also no case bulging is present)

I reduced the charge of WW231 back to 1.9 grains as this deep seating is using up about 15% more of the case volume than the standard 71g jacketed load.

Has anyone had a similar experience with the .32 acp and RCBS 32-77-RN mold?? and 1914 Mauser.

thanks

[9.3X62AL]

A number of my past 32 ACP pistols have had short throats and abrupt leades that interfered with Lyman #313249, an 85 grain RN with full-caliber shoulder behind its RN form. I addressed this anomaly in the same manner you have--shorter OAL and lighter powder charges, aided by some chronography.

"Anomaly" may not be the right descriptor. These pistols and their chambering regimens were designed around 71 grain FMJs that had ogival form that prevented leade interference with said ogives. IIRC, I started with 1.5 grains of WW-231 (my LONG-favored 32 ACP fuel), and the rounds barely functioned, giving about 680-700 FPS from a Beretta 81. Given the small spaces involved, I worked loads up 0.1 grains at a time, 10 rounds per lot. Once I got the 85 grainers to 800 FPS, I called it good. I want to say that 1.8 grains was the load, but I can't locate the load notes at present.

Is .312" necessary? My current 32 ACP (Walther PP) has a throat about .3095", and runs reliably with Lyman #311252 sized @ .310". I use a .309" expander spud. Zero leading for hundreds of rounds, literally. The largest throat I've run across in a 32 ACP was .311", and most are closer to .309". Overall, I've found the 32 ACP to be a VERY lead-friendly caliber to reload.

[runfiverun]

the rcbs book show's 2.0-2.5 of the 231 with that boolit in the 32 acp.
they don't show an oal though.