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Old 06-30-2018, 10:48 PM
ruggyh ruggyh is offline
Join Date: Dec 2012
Location: Bay Area California
Posts: 888
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200 to 300 fps between them out of 7.5" X-frame for same bullet, if you load 325 grain or heavier the the gap gets even larger.

355 grain HC out 454 1550 fps - 460 1980fps both at 57kpsi out of 8" test barrel

Some time back I posted 460 loads velocities for same bullets out of the various barrel lengths.

be safe
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