The Firing Line Forums - View Single Post - Reloading 30 cal M-1 carbine????

Grump · June 16, 2013, 11:47 PM

Yeah, settled on 14.6 of W-W 296 with this one a long time ago.

And last weekend had my first ever partial casehead separation. Probably 5 reloads on them, hard to know since my Dad started on them when I was too young to notice. Like the .308s I've been wearing out, the breakage is enough forward of the case web that gas sealing is not really compromised.

The other reason to trim religiously is that many chambers will let the case mouth sort of go into the leade and leave you with a "pinched" case/bullet and some scary-high pressures if the cases are too long.

The only other name for the cartridge has some variation of Winchester in it. I learned about it this week, and it reportedly appears only in some very early 1940 or 1941 military spec sheets. No one I have encountered has used it.

June 16, 2013, 11:47 PM	#5
Grump Member Join Date: October 22, 2008 Posts: 73	One of my Favorites! Yeah, settled on 14.6 of W-W 296 with this one a long time ago. And last weekend had my first ever partial casehead separation. Probably 5 reloads on them, hard to know since my Dad started on them when I was too young to notice. Like the .308s I've been wearing out, the breakage is enough forward of the case web that gas sealing is not really compromised. The other reason to trim religiously is that many chambers will let the case mouth sort of go into the leade and leave you with a "pinched" case/bullet and some scary-high pressures if the cases are too long. The only other name for the cartridge has some variation of Winchester in it. I learned about it this week, and it reportedly appears only in some very early 1940 or 1941 military spec sheets. No one I have encountered has used it.