i've noticed that my point of impact changes HUGELY when switching between different types of .22 ammo.  to the point where i'm perfectly zeroed with one type, but with a different type of ammo i'm not even hitting paper - at 25 yards!  what's the deal here?  should i just buy more expensive ammo?  also note that the first type of ammo was copper plated, and the second type was just lead, and that they had roughly the same velocity.

ETA the ammo was CCI blazer and federal champion target.  i also tried wolf, which seemed to hit closer to the federal POI, although i can't be sure because that was before i bought a scope and my irons were zeroed incorrectly. maybe the CCI blazer just shoots different in my gun than most other ammo?

Last year I tested 5 different kinds of ammo in 20 different rifles and I didn't ever experience a POI shift like you're talking about. At 25 yards most of the groups would have been well within a half inch of each other.

First thing I'd check if I were you is your muzzle. See if you've got any lead buildup there. Hit it with a brass brush. Even a small bit of lead at the crown can throw rounds way off.

did you try going back to the first ammo? that would have answered your question right there.


i have noticed the poi difference with different ammo and no stick with just federal champions since it shoots the most accurate out of my peashooter and fairly cheap