RE: "AT MY WITS END"
Ive had this problem tiwcebefore....mine came down to the ammo both timesbut its always best to try the cheap stuff first. Screws, mounts etc. The first time it was with my H&R .243, found the ammo it liked and it turned into a deer dropper. The second was a Sauer 202 in .308. I tried some rounds through it and wasnt at all impressed, switched to the same brand that solved the 243s issue and what do ya know....perfect, minus my faults of course.