@arzrover @nomoj065 and All ...
Guys, I'm experiencing wild fluctuations in fps from my RW HP .22. It
was shooting between 930 - 940 per fill since I bought the gun, now it's ranging from
901 to 925 (RD monsters). My accuracy is suffering as well.
The issue started at EBR, the 75 qualifying round, I blew a breech seal for the 1st time (yes, a Viton, chewed up). I had the seal replaced with a standard buna (thanks to Precision AG's!) before the next round and not much time to sight in. After the seal replacement, I bounced back on the 2nd card, and shot a 215, 5 X's. However, I knew I could do better if my scope was properly aligned and such.
Fast forward a couple weeks after EBR. When I got home, I shot it at 50yds and couldn't hit the target nor the 3ft X 5ft cardboard! WT? I tried at 25yrds, same thing. I immediately checked my scope rings and my barrel for tightness ... both seemed good. I loosened up the no-limits, zero'd @ 25yds and went to 50yds. My groupings were terrible. Set up the chrony and noticed the wide spread in fps... I brought the gun back to my truck and replaced the buna seal which had an unusual flat spot on it with a new viton. Shot it over the chrony and the shot string ranged from
915 - 930, still terrible groups.
My questions - could emptying the air out of the gun before flight (dry fire, and opened the valve with 100 psi left) have anything to do with it? Also, after shooting ~500 pellets, my battery still showed 100% charged (hmm, this was never the case) Perhaps inconsistent voltage, battery is NFG? Or a leaking actuator seal? My gun is holding air perfectly sitting in the gun cabinet.
Any thoughts would be greatly appreciated. BTW - I just polished the barrel and replaced the breech seal again... do to the weather, I haven't tested it yet. Rain, rain, and more rain.
Thanks,
Carl