Wider butt plate with less curve and less drop, or would you just build an English Sporter?
Build whatever turns your crank,do thr best you can with what's available then take it out and test ir..
I do admire the high level of skill it takes to reproduce an historical rifle or pistol like Tom Dawson
who was probably the first I knew that did it but most of us want a rifle or pistol to shoot or hunt with
and don't want to worry about some critic pointing out all the mistakes because it doesn't achieve the
standards of the Grant Rifle or some other famous and never used relic.
Bob Roller