ive run 12 diff types of pellet through my ultra, ive only had it a month! h and n ftt seem the best but jsb exact are just as good as are rws superdomes. it doesnt seem to be a pellet fussy gun, even likes h and n terminators out to 25 yards.
just take time in findind the right match, and practice, might be sad but i enjoy putting 10 shots through the same hole on a paper target! more than any thing it gives me confidence when im out in the field. shot placement is everything!