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Old 06-02-2014 | 12:28 AM
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SrTelemaster150
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Originally Posted by CLBetten
I'm planning to cut off the primer end and leave the reduction for the shell for some back pressure. Basically I think you're considering it backwards DerFly?
The case head diameter for standard rimless center fire rifle cartridges is .473 which is just over 12mm. That should give you an ID pretty close to 11mm.

Examples of standard .473" case head cartridges are:

All of the .308 based cartridges. .308, 7mm-08, .260 Rem, .243 Win.

All of the 7X57 based cartridges. 7X57, 6mm Rem, .257 Roberts.

All of the 30/06 based cartridges. 30/06, .338/06, 35 Whelen, .280 Rem, .270 Win, 25/06.

That should give you lots of options for case volume, length & outlet diameter.

The .308 family will have the straightest bodies W/the least amount of taper. They will also be the shortest.
Last edited by SrTelemaster150; 06-02-2014 at 04:17 AM.
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