Hi, i have the 882 ssv with the heavy barrel and mine shoot well with winchester supreme 34 gr. but is very capricious; when i just clean it, it was not accurate until it have shot around 20 round, at that stage, the better accuracy. After that, maybe after 50-60 rounds, it start to be worse.
I made around one inch @ 100. That's why i will change it for a 17, hmr or hm2(not sure yet). Seem's like these 17 was less capricious.
Good shooting!