I would suggest that if you're holding steadier with the lighter gun then thats got to be a help. I always go in close to the target if having problems at distance. Try consistency at 10ft to sort out holding, and hits on target, then move back a yard at a time. I find this gives confidence. Shooting at distances magnifies slight hold and aim problems. You can waste a lot of lead, and not identify weaknesses if you insist on shooting from 10mt. Back to basics and fundamentals is always the answer. This is from personal experience. Its a hard discipline, especially one handed, so don't get despondent. ATB. Pete PS. Its nearly always, concentrating on not letting the sights move, and good trigger press, rather than other things that matters.