Some more OEM Blackwolf HiLite fun from the last few weeks.
This is all still with the 28" .22 OEM barrel.
Reg pressure of 150 bar.
Blue hammer spring.
(no experimental/after-market air flow restricting or plenum reducing gizmos installed)
25.4grain MRDs are 930fps @ min, and 1070fps @ max. So, 48.8fpe, up to 64.6fpe.
28.55grain Grands are 890 @ min, and 1040 @ max, respectively 50.2fpe, and 68.6fpe.
I've said it before, and I'll say it again....it wasn't very long ago that this type of fpe was unheard of from a regulated, magazine-fed airgun. To push a .22/25.4grain up to most of 1100fps is wild, and to be doing so with a relatively mild hammer spring is even crazier to me.
After a bit of experimentation, I settled on "7" for the Grands, at 975fps. And "4" for the MRDs, producing 980fps. The next six cards (3 from each projectile) were shot at this speed.
Grands first...
The three cards above contain 16 groups of 5 shots each ( @ 100 yards). The average of those 16 groups is 1.38MOA.
And then some MRDs.... (a pretty mediocre batch of them).
These three MRDs cards are also 16 groups of 5 shot each. The 16 groups average 1.43MOA.
So, 32 groups of 5 shots each, at 100 yards, from two different projectiles, in winds from 0-10mph, over two different sessions, with an average of about 1.4moa. Considering that we're talking about pellets here...that's not too shabby. If anything, I would posit that this showcases the limitations of .22 pellets for 100 yard shooting more than it does the rifle. Or, as I often say, I think we're at the mercy of the ballistics profile of the currently available .22 pellets as the accuracy/precision limiting factor in this 100 yard pellet flinging endeavor.