Custom 264 Win Mag Reamer

[woodsman1991]

I'm in the middle of building a custom 264 Win Mag on a pre 64 model 70 H&H length (3.6 COAL) action. 1-7.5 Bartlein barrel, 27 inches.

Does anybody have a lightly used reamer that would be appropriately throated for 156 grain Berger or similar? Looking for .200 or more inches of freebore and a standard 264 case size. Cartridge should come out at roughly 3.55 inches with a 156 and preserve most of the case capacity.

Next, load data! Found two previous threads on extra long 264 win mags running heavies, has anybody done more recent load development?

Thanks!

 

[MagnumManiac]

My reamer spec is based on the A191 reamer with .010" to shoulder on new brass with .220" throat length. This is what I would recommend.
It is prohibitive for me to send a reamer through the post, I am not in the the USA.
Manson can supply you with a reamer to spec.

Cheers.