Chosing a neck bushing

[DShortt]

New to bushing dies. Bought a used 6br with a .266 neck. Have a Redding FLS bushing die but no bushing.
Any suggestions on what bushing to get?

Brass is Norma, neck wall is .010"

I was thinking .262", but again. I'm new to bushing dies.

Should I go .261" or .260" to account for springback?

Thanks for looking.

 

[DShortt]

Well, can't really check loaded diameter as I've no bushing at all. No other 6br sizing dies. So, I'm going off math.

Hence, my question.

 

[LCazador]

Simple you say your neck is .010" thick that equals a loaded diameter of .263" (.010" X 2 = .020"+.243= .263"). Your chamber is .266" so that loaded diameter is .003" under your chamber neck of .266", adequate. You want a .261" bushing for .002" bullet tension. You must test fire some loads to find whether that is the correct tension or not. Bullet tension can affect group size and extreme velocity spreads. Every rifle is different and whether you use .002", .003", or .004" bullet tension that will be decided by the outcome of your testing.

 

[prone.life]

Neck Bushing Size Calculator here

 

[DShortt]

OK, thanks to all.

I had a rough idea, but again, never having used a bushing die I wanted to ask.

 

[Bill Norris]

New to bushing dies. Bought a used 6br with a .266 neck. Have a Redding FLS bushing die but no bushing.
Any suggestions on what bushing to get?

Brass is Norma, neck wall is .010"

I was thinking .262", but again. I'm new to bushing dies.

Should I go .261" or .260" to account for springback?

Thanks for looking.

Normally, with getting all three sizes .259 .260 & .261 would afford you the testing needed to see exactly what the rifle wants to shoot.