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**Unclenick** · May 22, 2005, 02:30 PM

I don't know the particular load, though 00 buck for either .308 or .311 squib loads is an old time idea. It is .33 cal, if I recall correctly, which would be about 54 grains if pure lead (I don't know the actual alloy density). It stabilizes well in the rediculously slow twist rate standard in .32 Long barrels (18.75", same as .357, .41, .44, and .45LC; 12" has been shown to be much better (with wadcutters in particular)).

I don't know the particular load you refer to? I tried several in my internal ballistics program based upon seating the shot down flush with the case mouth. None of the usual pistol powders like Bullseye or WW231 would burn very completely in 4" to 6" barrels (50% to 75%). The only powder I have data on that did well in terms of burning and ballistic efficiency with this light little projectile was Hodgdon Clays. 1.8 grains of it gave about 1000 fps from a 5" tube and burned 99.75% in the tube.

I would give this a try. Peak pressure with Clays was achieved with 2.2 grains in a case with 14.8 grains of water capacity, but you only get another 140 fps for that, and may be stripping lead off if you do. I would start at 1.5 grains of Clays and work up, watching for leading.

Nick

May 22, 2005, 02:30 PM	#2
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,060	I don't know the particular load, though 00 buck for either .308 or .311 squib loads is an old time idea. It is .33 cal, if I recall correctly, which would be about 54 grains if pure lead (I don't know the actual alloy density). It stabilizes well in the rediculously slow twist rate standard in .32 Long barrels (18.75", same as .357, .41, .44, and .45LC; 12" has been shown to be much better (with wadcutters in particular)). I don't know the particular load you refer to? I tried several in my internal ballistics program based upon seating the shot down flush with the case mouth. None of the usual pistol powders like Bullseye or WW231 would burn very completely in 4" to 6" barrels (50% to 75%). The only powder I have data on that did well in terms of burning and ballistic efficiency with this light little projectile was Hodgdon Clays. 1.8 grains of it gave about 1000 fps from a 5" tube and burned 99.75% in the tube. I would give this a try. Peak pressure with Clays was achieved with 2.2 grains in a case with 14.8 grains of water capacity, but you only get another 140 fps for that, and may be stripping lead off if you do. I would start at 1.5 grains of Clays and work up, watching for leading. Nick