Just finished re-lubing a recent purchase, cleaned barrel & polished sear. Going to test it on the range this week, anybody know what .22 pellets these things prefer? At the time they were sold the bolt/breech mechanism was said to 'size' the pellets so that they were't pellet fussy, but there has to be a brand they get one with better than others. The rifling leaves deep grooves even in a 5.5mm H&N FTT.