put several rounds down the tube and practice. you have to have very good form to shoot tight groups. my 7-08 is scoped with burris 3x12. it'll shoot rem 120gr 1 1/2" @100 at best so far. some will go 3". my handloads are much more consistent. 5 shots less than 1 1/2" @100 best so far. for the tightest groups you'll need a scope. but if you want iron sights, more practice is what you'll need to tighten groups. position, hold and sight the gun the same way each time. also, gently keep squeezing the trigger harder till it goes off as a surprise, while still trying to maintain and hold the sight picture.