Hammerli AP20 low velocity?
Posted: Thu Jul 20, 2017 4:43 pm
We recently acquired an AP20 as a club pistol, and we've noticed that the muzzle velocity seems to be a bit on the low side ... in that it's very quiet and the pellets aren't so much punching through the target as tearing through it, which is giving the scorer a nervous breakdown. Not had the chance to chronograph it yet, but there's clearly something slightly odd going on.
We've had it from new, and it's always done this. It's doing it consistently, in that we're getting some decent grouping and scores out of the thing. It doesn't appear to be leaking air anywhere: we can't hear anything escaping, and it's holding cylinder pressure between sessions. The only time we've done anything to the mechanism since we've had it was to flip the reducer round to have the cylinder pointing in a more conventional direction. It doesn't appear to have any means of velocity adjustment, and there's nothing in the manual the suggest that it should have.
Any ideas, o lovely people of the internet? ::o)
We've had it from new, and it's always done this. It's doing it consistently, in that we're getting some decent grouping and scores out of the thing. It doesn't appear to be leaking air anywhere: we can't hear anything escaping, and it's holding cylinder pressure between sessions. The only time we've done anything to the mechanism since we've had it was to flip the reducer round to have the cylinder pointing in a more conventional direction. It doesn't appear to have any means of velocity adjustment, and there's nothing in the manual the suggest that it should have.
Any ideas, o lovely people of the internet? ::o)