30 Cal Rifling Twist Rate

sheepherder · 02-19-2015, 10:51 PM

I was browsing through my old [1970] Lyman reloading manual and noticed the rifling twist for the 30 cal Luger...1 in 9.85" (which works out to 250mm)...

Is that right??? The same manual lists the .32ACP in the Mauser HSC as 1 in 16"; the .38 Super in a 5" Colt as 1 in 16"...

I routinely use Remington Model 700 and Winchester Model 70 rifle barrels in 30-06 for my 30 cal Luger barrels; they are both 1 in 10"...

It seems odd that rifles in 30 caliber should have twists close to the 30 Luger while other ~30 cal pistols use a twist almost twice as long...

I'm not complaining...Just sayin'...

02-19-2015, 10:51 PM	#1
sheepherder Lifer Lifetime Forum Patron Join Date: Feb 2009 Location: ...on the 'ol Erie Canal... Posts: 8,196 Thanks: 1,416 Thanked 4,462 Times in 2,336 Posts	30 Cal Rifling Twist Rate I was browsing through my old [1970] Lyman reloading manual and noticed the rifling twist for the 30 cal Luger...1 in 9.85" (which works out to 250mm)... Is that right??? The same manual lists the .32ACP in the Mauser HSC as 1 in 16"; the .38 Super in a 5" Colt as 1 in 16"... I routinely use Remington Model 700 and Winchester Model 70 rifle barrels in 30-06 for my 30 cal Luger barrels; they are both 1 in 10"... It seems odd that rifles in 30 caliber should have twists close to the 30 Luger while other ~30 cal pistols use a twist almost twice as long... I'm not complaining...Just sayin'... Attached Thumbnails __________________ I like my coffee the way I like my women... ...Cold and bitter... Last edited by sheepherder; 02-20-2015 at 09:35 AM.