45 acp die on .2 line 6br?
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rwj
Gold $$ Contributor
The datum for the 6BR (CIP standard) is offset from the case head by 0.152” (not 0.200” like cited for many SAMMI standards). The case diameter is specified to be .4708”/.4709” at the 0.152” offset. The chamber diameter is specified to be 0.4720”.
Whether a .45ACP die will size correctly at the 0.152” datum is unknown to me. Why not obtain a caliber specific die for the 6BR to size the entire case in one operation? If the chamber is undersized, there are shops that make custom dies based on cases fired in the chamber. Harrell’s is highly recommended.
Whether a .45ACP die will size correctly at the 0.152” datum is unknown to me. Why not obtain a caliber specific die for the 6BR to size the entire case in one operation? If the chamber is undersized, there are shops that make custom dies based on cases fired in the chamber. Harrell’s is highly recommended.
Full Length Die
For the best fit on Full Size Die - please call (540) 380-2683 Hardened stainless steel .002 undersized for easy chambering. Can be cut to length for short chambers. Comes in PPC, BR Remington, 6.5 x 47 and Dasher.
www.harrellsprecision.com
Cortina makes a nice mandrel die that sizes the base as well.
Link
Gold $$ Contributor
I see that measurement referred to as the.2 . .152 is nice to know. I do have a Harrell's die but I'm getting bolt click after a lot of firings on this brass. I just found this last night and have a shoot tomorrow night So as a last minute thing I resized with a 30 06 die, that seemed to reduce the measurement .001 Compared to the Harrell;s. It looks like it's time to buy some new brass.The datum for the 6BR (CIP standard) is offset from the case head by 0.152” (not 0.200” like cited for many SAMMI standards). The case diameter is specified to be .4708”/.4709” at the 0.152” offset. The chamber diameter is specified to be 0.4720”.
Whether a .45ACP die will size correctly at the 0.152” datum is unknown to me. Why not obtain a caliber specific die for the 6BR to size the entire case in one operation? If the chamber is undersized, there are shops that make custom dies based on cases fired in the chamber. Harrell’s is highly recommended.
Full Length Die
For the best fit on Full Size Die - please call (540) 380-2683 Hardened stainless steel .002 undersized for easy chambering. Can be cut to length for short chambers. Comes in PPC, BR Remington, 6.5 x 47 and Dasher.www.harrellsprecision.com
Ty Don.
Last edited:
bozo699
Gold $$ Contributor
I have used a small base .308 3006 and a 45 acp die’s to achieve resizing at the .200 line so I got rid of clickers but yes the only real fix is new brass
Wayne
xr650rRider
Silver $$ Contributor
Not sure about the .152 but nearly everyone's reamer prints, specify dimensions at 0.200"
rwj
Gold $$ Contributor
Look up the CIP standard cited in the upper right corner of the JGS reamer print revision block. I would post my copy, but it is marked “not for distribution/reproduction.”
It appears that domestic reamer manufacturers have adopted the SAMMI 0.200” offset when preparing their drawings.
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