Not worried, just curious. I really wont shoot it enough for it to be an issue. Enough to remain proficient through out the year, a little more when gearing up for the season.
Definitely don't want to ruin something before I even get to enjoy it.
Some time back, in the late 70's, Taylor built me a .58 Hawken with the normal hooked butt plate. That particular barrel shot best with 140gr. 2F, a .022 denim patch and a .575" 285gr. round ball. I also experimented in it 60" twist with most of the minnie bullets Lyman sold moulds for- from the Original Style 460gr. 485 after I modified the plug, through the 505 gr., turned into a 525gr., to the 570gr. turned into a roaring 675gr. bullet - with charges from 100gr. to 160gr. with the big one running 1,325fps. It kicked me quite thoroughly, but then even the round balls with 140gr. wore me down. I foolishly sold it to a friend in Terrace, BC. for no where near enough money.
Here's that rifle. It was murder on grouse with either round ball or an ounce of 7 1/2's. I used only 70gr. 2f with the shot charge. The round ball, loaded for moose, always had 140gr. behind it. The rifle still kicked pretty hard, even for a young lad like me - then.
The English styled gun I show a lot here, I'm @!*% proud of. Taylor built that one too, in 1986 after I'd read Forsyth several times and got the parts together, although I finished it, fine sanding and true oil, seems to me. She's had well over a couple hundred pounds of lead through her (over 3,000 balls) and it's an easy rifle to shoot due to the shotgun butt, compared to the .58 Hawken's hooked plate. The .58 wore me down with round ball using 140gr. For many years, I shot only the hunting charge out of the .69 (14 bore) - that being 165gr. 2F. It is quite simply, an easy rifle to shoot & although it will bend you over a bit with it's climb, it's 2" wide almost flat plate is not painful like the narrow & rounded steel butt plate of a Hawken.