I noticed something today while zeroing a new scope on the Regal. I took off a Sightron 3.5-10x44 and put on a Bushnell Elite 6500 2.5-16x50 (wanted to try the extra magnification.)
I don’t have a chrony yet, but was a bit curious to find something after I’m zeroed in at 25yds.
With an initial fill to 230bar the gun is dead on accurate, within a pellet width every shot. As the pressure dropped off a bit (says 10-15 shots) the POI moves UP by about a pellet height and stays that way till the pressure falls off dramatically (say 45 shots.) I would have expected, if anything, after the pressure dropped off some, the POI would FALL, not rise.
My guess is that after the initial fill, the muzzle velocity is actually lower, then after a few shots I’m in the bell curve and she’s shooting at a higher velocity? Hence the higher point of impact?
Any ideas?
BTW, both scopes are very nice (focus down to 10yds. and beautifully clear) The higher magnification of the Bushnell is nice, but I think I like the Sightron a touch more. The Bushy makes it easier to see the pellet poi though.
I don’t have a chrony yet, but was a bit curious to find something after I’m zeroed in at 25yds.
With an initial fill to 230bar the gun is dead on accurate, within a pellet width every shot. As the pressure dropped off a bit (says 10-15 shots) the POI moves UP by about a pellet height and stays that way till the pressure falls off dramatically (say 45 shots.) I would have expected, if anything, after the pressure dropped off some, the POI would FALL, not rise.
My guess is that after the initial fill, the muzzle velocity is actually lower, then after a few shots I’m in the bell curve and she’s shooting at a higher velocity? Hence the higher point of impact?
Any ideas?
BTW, both scopes are very nice (focus down to 10yds. and beautifully clear) The higher magnification of the Bushnell is nice, but I think I like the Sightron a touch more. The Bushy makes it easier to see the pellet poi though.