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Unread 12-10-2018, 03:56 PM   #2
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Ken Hill
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Karl,

The tests done by Sherman Bell and published in the Double Gun Journal were with a 12 gauge. There was up to 300 psi increase with the 2 3/4" shell in a 2 1/2" chamber. The 2 3/4" shells from RST are 200 psi less than the 2 1/2" shells. If you shoot the 2 3/4" shells you need to see if the ends are fraying. This will be a sign they are too long for the chamber area. Then you probably want to use 2 1/2" cartridges.

Hopefully, Drew will chime in.

Ken
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