Try Lees 90301, 32-20 100 grn bullet.
http://leeprecision.com/search.php?mode=search&page=1
Mine cast .312, I use it unsized in my Nagant 7.62X38 R (tumble lubed) and I run it, (after tumble lubing) through a .309 sizer die.
It does not call for a gas check but it is accurage in both my Nagant revovler and my USGI (Underwood) M1 Carbine.
I load 15 grns of 296 with this bullet and it's pretty close to the sight settings on my Carbine that I use for jacketed bullets.
Great little practice round, cheap to shoot, easy on the gun, brass and shooter.