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swglenn
Reply with quote  #1 
I have decided to rechamber a 22-250 to 22BR. What do I need to specify in the reamer neck diameter to get a no turn or minimally turned neck, and freebore for 50-53 gr Berger's and Sierra's seated with enough room to be set out once for throat erosion. Any other suggestions welcomed because I am sure there is a lot that I haven't thought to ask.
Mntngoat
Reply with quote  #2 
When Mike Bryant built my Rampro in 22 BR we had a custom reamer ground to use Lapua brass, with a .254" so no neck turning would be required. as for the freebore length, mine was set up as a 8- twist for teh 77-80 grain bullets so I can't help you there.

Hope this helps
Michael
swglenn
Reply with quote  #3 
Thank you. I will work with my gunsmith to figure out the rest.
Moderator
Reply with quote  #4 
If you make up some dummy rounds, your smith can take it from there. I'd keep the base of the bullets at least .060" from the neck-shoulder junction. More like .100" if you plan to use any longer bullets as well. That should still give you plenty of neck left to chase the lands.
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