Ok guys I have a Thompson center 28in stainless barrel with Nikon xr inline 3x9x40. I'm using t/c factory base with weaver high rise scope mount. I'm shooting triple seven pellets at 100 grains with a 250 grain powerbelt. I Have 1 1/2 or better groups at 50 yards. My scope is almost maxed out on elevation at 50 yards I'm dead bullseye with 14 clicks left to top. I've used this combo for years on my traditions and my cva. I've never seen a gun need this much adjustment or so close to being maxed out. I clean in between shots. Has anyone seen this before? what should I look for ? Is this a bad thing? I want my equipment perfect. Thank so much