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Potentially dumb question re: 6BR/Dasher BTO

BoilerUP

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Jan 16, 2011
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Floyd Co, IN
Let's say you have two barrels - one chambered in 6BR, the other in 6 Dasher. Both barrels have the same freebore.

If you use the same bullet, would both cases have the same base to ogive measurement touching the lands?
 
Looks like it should be pretty close

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