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Sirs;
"Freebore" is a meaningless term! I have seen English 22 rifles that are rifle-less almost to the muzzle!
The "paralel throat" espoused by now defunct A-Square" (a shame) is the answer and several reamer companies will furnish it on order!
Real freebore is the distance the bullet travels (if any) till engraved by the rifling! "Funnel" throats ( in use today) and the paralel throat are just terms for this event!
Greywolf
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