What diameter cast for AAC Handi?

[SAWebbShooter]

Bought a 300 BLK AAC Handi, brass, dies, Sheridan gauge and started making a few dummies. I have lots of different 32 pistol bullets, a box of .311 cast 170gr rnfp bullets and a .30 cal. Lyman M-type expander. Nothing would chamber in the Sheridan gauge without running the bullets through a .309 push through sizer first. What diameter are other Handi shooters sizing their cast bullets?

Essay W

[Jailer]

Did you try the 311 bullets to see if they would chamber in your gun?

.310 is usually a safe place to start for cast in a 30 cal gun.

[SAWebbShooter]

I tried .311 and it wouldn't chamber in the Sheridan gauge or the rifle's chamber. I tried with both new Jamison head stamped brass and LC converted brass I bought from Grumpa. Both batches of brass gauged fine unloaded. When I resized my .313 115gr. and my .311 170gr. To .309 they chambered fine. I'm thinking of opening up the push through to .310, but maybe I should test fire some .309'rounds and see how they group before I do. If the accuracy is ok, I'll leave it alone.