.32 ammo with a .311 diameter?

[SanDiegoMan]

Which brands of .32 ammo have a .311 diameter? It can be long, HR, or 32 acp. I'm setting up a .32 multicaliber....Mosin Nagant. Mosins have a bore of .311 and many of the .32 rounds are .312. I'm going to use this so I can shoot the rounds http://www.sportsmansguide.com/net/cb/cb.aspx?a=587989 In case your wondering, the reason I want to do this is most of the ranges close to me don't allow steel ammo and brass soft point 7.62x54 is expensive (can be found at Big 5 though.)

[ojisan]

Bullets actually need to be a bit larger then the bore so the bullet engages the rifling in the barrel.
.312s will work fine in your .311 bore.

[gun toting monkeyboy]

If you are using jacketed pistol bullets, don't even worry about it. If the bullets are under-sized, there is still enough to grab the rifling, and give the bullet some spin. I know plenty of people that reload .32 ACP with .308" bullets, and use them with chamber inserts in 7.62x54R and .303 British rifles. It isn't really a problem. Additionally, if the bullets are over-sized, they will still go through the bore of your mosin with no problem. The worst you will see is a slight increase in pressure. And an slight increase in a pistol cartridge pressure when you are using a Mosin is like a fly fart in a hurricane. Nobody's going to notice. I know many of the older .32 cartridges that primarily used lead bullets often have bullets that measure in the .312-.314" diameter. Things like .32-20 and .32 S&W/S&W Long. I also know people who use those same .32 caliber revolvers with .308" bullets, and have no problems. That 1-2 thousandths of an inch isn't all that critical in thins situation.

-Mb