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Just bought a chronograph and was keen to see what velocity I am left with in my 16 inch barreled Columbian Mauser (ex-mil). Last weekend factory Federal 150gn PowerShok resulted in 2600fps, down from the 2900fps on their website (22 or 24 inch barrel?). This is still equivalent to the good old 303 though.

Most of the primers of the Federal rounds had backed out and the noise wasn't up to the normal "short barrel boom", so I'm fairly sure that these are ligthly loaded. I'm going to try my reloads this weekend (61gn AR2209 behind a 144gn FMJ) - these make a decent boom & flash.

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I am guessing the velocities were indeed used from a 24" barrel..very common here in the US..

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