.30 Carbine Bullet Diameter?

[ElPistolero]

I have been happy with any of the following:

Calibre Weapon Bullet Mfg Wt/ Type Alloy Sized BC Powder Primer Grains OAL FPS Energy
.30 Carb Iver Carbine Speer 100 Plinker .308 0.124 IMR 4227 SmRf 13.0 13/14.5 1700 642 Same load can be used up to 120 gr
.30 Carb Blackhawk Speer 110 JHP .308 0.136 W 296 MgSmRf 13.7 0
.30 Carb Blackhawk Speer 110 JHP .308 0.136 W 296 MgSmRf 14.7 0
.30 Carb Iver Carbine Speer 110 JHP .308 0.136 W 296 MgSmRf 12.0 0 Hodgdon says 14.5 max for W 296 in the Carb
.30 Carb Iver Carbine Speer 110 JHP .308 0.136 W 296 MgSmRf 15.0 0 Hodgdon says 14.5 max for W 296 in the Carb
.30 Carb Iver Carbine Hornady 110 RN .308 0.150 IMR 4227 SmRf 15.0 0
.30 Carb Blackhawk RCBS 30-115-SP 115 GCRN 5 .309 W 296 MgSmRf 13.0 /13.0 0
.30 Carb Blackhawk Berry 115 RNPlated .309 W 296 MgSmRf 12.5 1.680 0
.30 Carb Iver Carbine RCBS 30-115-SP 115 GCRN 7 .309 IMR 4227 SmRf 13.0 1.625 1700 738 (or MagSmRf) For Blackhawk verify hammer spring function
.30 Carb Iver Carbine RCBS 30-115-SP 115 GCRN 7 .309 IMR 4227 SmRf 11.5 1.625 1580 638 (or MagSmRf) For Blackhawk verify hammer spring function
.30 Carb Blackhawk Saeco 254F6L 120 RN 5 Internat SmRf 4.5 0

I will admit to winning more contests in Cowboy and an odd version of 3-gun with .309, but I have never missed a rabbit, hog, or tree rat with the .308.

[mehavey]

Did you have to trim the brass? I tried .32-20
brass and it seems to be a bit long.

Looking at my notes, I neither remembered or saw any trimming. Then I realized ...
the 32-20 rim thickness more than accommodated for the 24-thou difference in
the longer 32-20 brass.

[Outpost75]

My Ruger .30 Carbine revolver is more accurate than my 1944 Inland M1 carbine shooting the same loads.

Attachment 287622Attachment 287623

[Cherokee]

32-20 brass will not work in any old model 30 Ruger that I have tried with 10+ different guns. Many people seem to use it fine in the new model. The rim thickness seems to prevent it in the OM's with recessed case heads, I don't know of any other difference.

[mehavey]

32-20 brass will not work in any old model 30 Ruger. . .

I've heard that as well. A shame....
32-20 brass makes life a whole lot easier.