needs help with 22BR reamer specs

[btrapr]

I am interested in building a 22BR sometime in the future, and want to gather some information about the chamber recommendations. I have read the 22BR page and several post here and could not find a lot of the answers I am looking for. I am planning on calling Dave but I wanted to see what input I would get from people shooting this cartridge now.

Thanks in advance

#1) What is the neck on a no-turn? I want to get a no-turn neck match reamer made, so when I get ready to build one.

#2) What free bore is recommended? .000” or ?

#3) What twist to use for shooting 50-55 grain bullets mostly, but the occasional 60gr flat base, 69 HPBT, or 75gr A-max’s?

#4) What kind of barrel life can I expect if I do not shoot the gun hot?
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I have taken some information from other posts here, so you might recognize what I am pasting.

Have several 6BRs' so it was an easy 'transition'. Use my 6BR redding bushing die with a .247' bushing, loaded round .249' w/ Lapua, for a .251' chamber neck.

By the sounds of it, you dont really need the twist to shoot the heavy bullets a long way. 200 for paper punching is fine for the 1:14 twist and the 52-53gr match bullet range. But in case it gets windy, consider a 1:10 twist to shoot 69gr match bullets.

My 22BR replaced my 22/250 and what a joy it is too shoot. I'm using a 1-12 twist barrel. My standard load is H322 and 55 grain Noslers, but I can also use Berger 64 grain

 

[Preacher]

A .254 is considered a no turn neck.......
I use a .070 fb for the 75 grain A-max... it needs a 9 twist..
I use a .030 fb for the 40 grain Ballistic Tip---- it has a 16 twist I ordered specially for the 40 BT's.....
A 12 twist is a happy medium.....
I have only about 850 rounds through the 16 T and do not see any damage to the rifling at all, and expect it will go over 2500 with no problems.......

 

[btrapr]

Thanks for the info, it has my wheels turning! Sounds like a .254' with around .050' should work for 50-60's! I will see what Kiff says!

 

[NorCalMikie]

Steve: What about having someone that already has a reamer made up, cut your chamber for you? You going to cut more than 'one' chamber with it? Might save the cost of having a reamer made and you could use those extra $$ for bullets and powder. Just a thought.

 

[Ackman]

All I ever shoot through mine is 50's and accuracy loads are anywhere from mid 3600's to mid 3900's. With 0 freebore and a new unfired chamber......when touching the lands a 50gr Blitzking seats about 2/3 down the neck, the 55BK goes a little deeper. The flatbase 60VMax will seat to the beginning of the radius at the neck/shoulder junction. Again, that's with no freebore.