Yes, get a gun stocked to your dimensions. You will find you need a Long lop, more down Pitch, and a resulting lower drop at comb, and heel.
It makes a difference if you are being fitted for a half moon butt plate, that will be placed in the upper arm, above your bicep, and below your shoulder joint, compared to a flatter butt plate that will be held in the pocket of your shoulder, closer to your neck. Most stocks will be longer with the half moon butt plates, than with the shotgun style flatter butt plates.
You shotgun shooting will improve the most, but if you use the same measurements for rifles( unless you are putting a scope on it), you will also do much better off-hand shooting with rifles. If you insist on putting a scope on any rifle, you will find that a long eye-relief, "Scout Scope", mounted on the barrel above the forestock, can be mounted lower, and be easier to see without a major change in the height of the comb. The Closer the scope is mounted to your eye, the higher the comb has to be.
I have had a couple of rifles, and my shotguns fitted to me, and boy, has it made a difference. I have a Win. M.94 30-30 I bought back in 1968, that just beat the heck out of me when I shot it. Then I had a gunsmith fit it for me, and he ended up extending the length of the stock by almost 2 inches. Every friend of mine who is 6'1" or taller, once having handled and fired that carbine, wants to steal it from me. That included a couple of friends who are 6'5" tall.