I have .44mag and .44special revolvers, but i also have a marlin .44 lever. The handguns are .429, the groove on the rifle is .431.
I was trying to find a common bullet to use in both.
I did read this on another forum than kind of explains it. But then it marlin's you also are dealing with two different kinds of rifling.
"I asked this question of Marlin CS when I first got my 1894 CB as the first rounds thru the gun went sideways thru the target at 50 feet.
I measured the groove dia and it was .431 so I asked what happened to .429 which is what all of my previous Revolvers had been since day one.
The answer I got was .431+/- .002. is SAAMI spec for .44 magnum rifles. This is looser due to the higher pressures that a rifle barrel would generate as opposed to revolvers which are generally .429 but have that nice pressure relief valve between the cylinder and the barrel."
and where the interest lies, is if I size a lead bullet for the rifle at one thousandth's over at .432 for the rifle, i am then three over for the revolver.
Last edited by RoninPhx; 08/23/14.
