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Old 10-28-2012, 09:47 PM
2152hq 2152hq is offline
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You'll be removing the AR rim thickness from the rear of the cylinder.
The OAL of the two rounds is the same.
The headspace is already established in the revolver between the 45acp case mouth edge in the chamber(s) and the breech face of the frame.
You are just making space for the rim,,nothing else,,no additional case length.
BUT do check with the SAAMI specs and do a carefull job of it. Many 455 Webley revolvers were converted by turning the rear of the cylinder off and many are way off as far as headspace.
They work,,but why not do it safely & correctly.

The 45AR does allow you to crimp bullets into place if that satisfies any of your reloads needs. The 45acp needs the case mouth square and uncrimped to headspace on. A small thing, but it can make a difference in some loads and performance.
,,,and I just like the looks of the case rims showing personally!.
A 3 screw 357 w/ nasty scope mt holes in it awaits conversion...
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