Remington NMA Target rear sight
My new (to me) Remington NMA Target has an aftermarket rear sight and it's shooting about 18" high at 25 yards. I've filed down the opening in the rear sight to try to compensate, but if that doesn't work, can someone give me clues on where to get a "normal" rear sight? I'm in the UK, so shipping from the US is a bit of an issue. Black powder is new to me, but I am enjoying it. Lots of smoke and bang!! Thanks for any help you can give.