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Old 10-05-2012, 12:18 PM   #1165 (permalink)
super_stanchy
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Join Date: Nov 2008
Location: Oregon City, OR

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Quote:
Originally Posted by staindvans View Post
does a newer style kaner back need to be any certain bore size in order to be bored out for freak inserts?
the general rule of thumb is to use a back that is larger than the biggest insert you will use. you cant use a .689 insert in a .680 barrel because the ball will have to squeeze through the step down and break

so if you only use a .670 insert, you can send in a .680 barrel and be fine
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