I have a Marlin xlr 45/70 naturally in stainless, and have taken game from 50 to 100 plus yards from tree stand's and on the ground, and never had a problem with glare. But at the same time, if you let that what if get in the back of your mind there's alway's doubt. the cheapest way to have it done would be find a gunsmith school relatively close and let them do it. They are watched over like hawk's and the cost is penny's if at all.