Remington 572 accuracy
I have a sweet older rem 572. The older models have the 23.5inch barrels. I always thought pump action 22's where so cool. I Purchased it about 3 years ago. Shot it here and there, but never really thoroughly benched it to try and see how she groups. I've been thinking of doing a squirrel hunt the past several weeks so I wanted to use my 572. The thought of a perfectly placed single shot appeals more so to me than picking out hair and 6 shot.
So I take it to my range last week on one of the warmer days (temp was actually in the 30's so yeah warmer days LOL). I'm shooting this rifle benched at 50yds. My first couple shots where in a 3 inch group about 3inches to the bottom right of bull. So I re-adjusted and kept shooting. Well, over the course of my range trip the accuracy just got worse and worse. Around 20 shots later I'm shooting 6-8inch groups (which is basically everywhere). I checked the mounts and they are tight. It is not on a rail, it's just the ole 22 mounts that fit into the grooved slot on top of the receiver. The screws holding the scope are tight and so on. Sooooooo what the heck! I even stripped the rifle before the range trip and cleaned it spotless! The scope is an older 22 bushnell scope so maybe it could be the scope, but any ideas???
One thing I noticed about the rifling in this 572 is that the lans and grooves are very very small and thin. Take for example the rifling on a Marlin golden 39A are way bigger, sharper, and more robust. I know that could also be just because of Marlins micro-groove, but the 572 is not as aggressive.