264 LBC-AR Cartridge

[constructor]

Do you have a way to measure the depth of cut? Doesn't take but a second to go too deep.

 

[kentuckytroutbum]

Do you have a way to measure the depth of cut? Doesn't take but a second to go too deep.

Yes, I do. I have a good set of digital calipers, and a Hornady L-N-L tool, with a modified brass case, to check the starting and the final freebore dimensions. I'm going to use PT&G's T-handle to make my cuts, and check the depth as I go. I don't want to cut too deep either. I want to have the bullet ogive 0.015" off the lands for the 123 gr. A-max.
I've downloaded the reamer drawing for the 264 LBC-AR.

Thanks to everyone who helped me on this matter. I do appreciate it. Hopefully someday I can return the favor!

 

[constructor]

I had a new reamer ground with a shorter leade than the LBC drawing above, it is unbelievably accurate with Black Hills 123gr SMK factory load. Customers AR was a lightweight fluted 20" 8 twist 3 groove, first group of 5 was just over 1/4moa. Big difference from the first few Grendels I shot in 05, I think going back to the 1.5 degree throat angle was a good move.