Tuning FX Impact M3 Tuned for Crosman Premiers? (in .22)

I have shot those through several guns and while I don’t have a tune for the m3 I’ve found that no matter the brand of rifle they shot really well for me at 770-830 FPS any thing over they grouped well but had a cork screw flight path

Tiapan, brocock, fx, katran and edgun I never found a gun that shot a straight flight path over 880 FPS with them which leads me to believe it’s the ammo not the gun. 
Just my experience others may have had better luck 
 
Out of the superior liner the .22 CPHP is freakishly accurate in lower 800FPS range out to 80 yards and only opens up a bit to about 2 inches at 100 yard. Easily hit birds at 80-100 yards. 

Even though they are cheap and exterior is a bit rough from casting but overall they are very very consistent and accurate......as much as a hollow point can be. Hades edges out the CPHP in accurate but not by much at all! Hades just seem to hold the groups together a little better pass 80 yards.
 
That crosman lead is really 'sticky' in the barrel, I find they lead up and it's hard to get that stuff out. It's a hard lead.

I was wondering about that. It's hard lead. The pellets are noticeably harder than JSB pellets (the skirts won't even bend). 

I was going to ask if those lead up barrels. ....that's enough to meake me think it may be a bad idea to run them through my Impact.