I was judging the width based upon Track's early Hawken and a Leman that I own. The Hawken is 1.20" and the Leman is 1.375" in width. So my 1.25" seemed (to me) to be about right.
The barrel is 29" long. It's in 50 cal but reduced loads can mitigate the recoil. (I already owned the barrel). Lockplate will measure 4-3/8" x 7/8". I plan on a LOP of 12"-12.5" (haven't made up my mind on that one yet). Trigger guard is going to be the "standard" Northwest trade, unless it will look to out of proportion. (Trigger bow should work fine, but I may need to cut down the front and back. I was going to repurpose an old T\C TG, but the more I look at it the more I don't like it)
Any input on the above is more than welcome.
I should say that I'm not concerned with duplicating a NWTG. I'm just interested in a flintlock that a youth can shoot that's not overly heavy, and still looks good. I'm going for a basic "workman's" rifle here.