Question for Zonie ! I installed a johnson peep sight on my longrifle. It’s 50 cal. Green mountain barrel, 7/8” . I think that I might have the holes too deep. There is 0.75 of metal to the bore ,and they are on right in front of the breech plug. I have shot the rifle with a 65 gr. chargeof 2f and no problem.. Do you think it is ok for a charge of 75-80 gr. or should I consider getting the barrel shortened and retrenched?.