GTA
All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Big Bore AirGun Gate => Topic started by: morrodds on December 30, 2012, 06:24:50 PM
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Got out to test my new valves today. Got about 40 shots off before it started to snow. There is a comfort threshold I won't cross to indulge my hobby.
50 yards at a cinder block, 650 - 540 fps.
(http://i267.photobucket.com/albums/ii311/morrodds/concreteblock.jpg)
note the upper ball - it struck low, bouncing off a concrete chip and hitting the block. The rifling marks are just off center.
On many of the balls, the rifling marks are visible on the perimeter. Seems like good stabilization with the original geometry and twist.
Martin