I recently bought a Stevens m310 in 17HMR and now that I've had it to the range a few times I'm noticing a strange lack of accuracy with V-MAX loads. I'm able to get sub 1" groups at 50 yds pretty easily but when I move the target out to 100 yards it opens up to 6+ inches with Hornday and Federal ammo.
If I use the 17g JHP TNT ammo from Federal I amble able to get 1.25 inch groups regularly at 100 yards. For some reason its just the plastic tipped v-MAX that does this.
Does anyone have any ideas why this might be happening?
My Marlin really only likes the Hornady either the 17 or 20 grain. I tried Winchester, Federal and CCI and none shot as well. No rhyme or reason I can see, probably just a slight manufacturing difference that makes it match the barrel a bit better.