I just got a Diana Outlaw,and was wondering if there was a break in period on the barrel? The gun is a 22 cal and will be used mostly for hunting.I cleaned the barrel almost spotless before I began shooting it. I've tried JSB 16 gr. pellets and it shoots them all over the target. Strange enough it shoots Crosman CP 14.3 gr HP pellets the best so far! It groups really well at 25 yds,but seems to have a lot of flyers at 40 yds? The Velocity is regulated and it shoots at 943 fps. with the 14.3 gr. pellets!