I had a gunshop mount a scope way too far forward for me once (before I had learnt to mount them myself). I asked the guy and he insisted it was right, not knowing better I said ok and went off home.
Went through a couple of boxes of ammo trying hopelessly to get a consistent group and sight in. It was my first centrefire (Ruger 308) so I wondered if my technique was wrong being used to rimfires, whether I had bought a dud rifle, whether I just had to keep trying different ammo until I found what it liked, etc.
Eventually I realised how much I was straining my neck forwards to get a sight picture, moved the scope back 15-20mm and my groups instantly dropped from all over the place 3-5" @ 100yds to a pretty consistent 1.5" with the same (cheap) ammunition.
A useful lesson to learn...
Bookmarks