[CalvinMD]

trying to accumulate an average of what y'all have found to be your bore size measurements for the 30-30...I have been given a bunch of the Speer 123gr .310" dia softpt bullets and i have 1 older well worn 30WCF that I plan to work up some light plinker and close range varmint loads with them...anybody else done something similiar??..if so what kind of accuracy did you manage to wring out of them

 

[Tatersoup]

This is about all I know of but it might give you what you're looking for as long as you own a Marlin lever gun. It shows the 336 30-30 as having a 0.310" groove diameter. ;D

http://www.beartoothbullets.com/faq/extras/marlindia.htm

 

[gon2shoot]

I have one at .30786 and one at 31125. Good luck

 

[CalvinMD]

Thanks...after slugging mine too..I came out a hair over 309...so I'll work up some loads with these 310's ..I'm sure out of my 24" barrel that 2500fps and good accuracy are just a few range sessions away...I'm thinking since that the bullets being designed for 7.62x39 velocities will give good reliable expansion on deer and such out to 350yards easily