Haven't shot my Rem SPR22 yet,maybe good thing. I want to use cast bullets and the factory doesn't warrant reloads. While measuring the bores and chamber throats, I found a restriction in the left barrel were the pins lock the barrel band to the barrel. .4545 at the smallest point .455 elsewhere on the slug, both bores are .457 elsewhere. It will ship for warranty repair Monday.
I'm sure this restriction can't help accuracy, hoping for the best.
Has any one noticed this problem or checked bore dia.?
The throats are both the same, large and long, .120-.130 ahead of case the bullet needs to be .460 to center at start of rifling. Wouldn't work well with black powder, but will help lower pressure with smokeless. Reckon that's a good thing, doubles don't handle pressures crowding their upper limit as well as bolt guns.
Have fun shooting your doubles while I wait for mine.