Yep, 90-95% of the muzzle flip is when firing a pellet only, once or twice I fired fresh air
.. and judging solely by the feel the muzzle flip near dissapeared. The "For every reaction there is an equal and opposite reaction" principle in action here. Was using JSB 4.52, would the theoretical reduction in friction of a 4.51 diam pellet reduce it a little.. or would pellet skirt expansion nulify this?
As John says, i was experimenting with different clamping and supports to see what was produced the best results. Interestingly, a loose clamp to act solely as the horizontal hinge and ensure totally vertical muzzle flip coupled with minimal butt support proved to have the most consistant POI... same principle as a springer but only apparent at the 94 yard range we were attempting.
I attempted resting the rubber butt pad on the table and I could feel the vibration which made the groups about 5 times worse.
My very 1st 3 shots of the day (with the loose clamping and minimal support) were within aprox 1.2 inch (iirc John?) the breeze picked up a little.. I then got a few wind affected shots that took it out to about 4 iches The highlight of this 8 shot group was 3 shots through ONE ragged hole!
Spot on mate