I have a Omega Z5 it shoots extremly well for a cheap gun [got it for $160 on sale at wally world]. It shoots good groups with 250gr or 200 gr Shockwaves the 250's with group well with 100 to 140 gr of APP FF and the 200's will group well with 100,110 or 140 or 150 gr App FF. It also likes the similarXTP with MMP -24 sabot and the same load which is whatI usefor pratice. Lee