The style is pretty determined at what I like to call a "modernistic gemmer george schuetzen" style of rifle if that makes any since at all.  It will be a half stock, that is for absolute certain.  It'll have a straight wrist (just because that's what I think is the most comfortable to shoot) with a kind of half weatherby half rolling block with a dab of schuetzen style thrown into the comb with schuetzen style buttplate as they look kind of cool to me.  I think I'm going to stick with the half octagon barrel with a single wedding band at the transition like on a trade gun.  Vernier tang sight as it is being built primarily for some impromptu BPCR competition with the back action lock being the final determination as it has a shorter locktime according to the folks at L&R and I'll come up with some sort of decorative plate for the opposite side if for no other reason than because I can.  Globe front sight with spirit level as that's what I like.  Stock made from a piece of SP++ curly maple (as I have a good source back home in OH) with a forend cap made from either german silver or copper (as we all know I like to be different) and something yet to be determined for decorative inlay work as I like looking at them and making them with a trapdoor grip cap (as it seems fitting on a trapdoor rifle) so if it fits into some sort of design please let me know as I don't think it does at all.  It'll definitely be different.  But then again I am the same guy that took an uberti 1851 navy colt replica converted it to 38 long colt and fitted a bisley backstrap and steel frontstrap like elmer keith did with his number 5 SAA and proceeded to shoot it for several months in cowboy action as everyone looked at it and repeatedly asked what is it?  I definitely like them different.  But then again isn't that what this is all about?

I actually still have a little bit of jawin time, I don't have all of the parts yet, I bought a stripped receiver and am now hunting down everything I need to complete it (stuff like hinge pin, opening cam stuff, etc) and waiting on some stuff that has to be ordered from suppliers and what not (lock, DST assembly, etc) but I have been able to do some work.  I've got everything stripped, my stock template started, the tang will be lengthened shortly after I get home (working on the road right now) and some other little bits and pieces type of stuff.

Well I've got everything soaking in motor oil now to keep corrosion as a nonexistent factor while I hunt for everything else, project is taking a bit of a twist however.  Have decided to use an arsenal lock after all.  I pulled a back action out of another gun in the safe and laid it out with my stock drawing and decided it just wasn't going to look right then I laid my leman lock down and decided I'd just stash it away for the original project.  A buddy of mine is working on making me that new tumbler and we'll go from there, so far as far as lock parts go I have a tumbler in the works, and a type 2 hammer, just got find the rest of it now.

Glad to hear you are going Arsenal for the lock, it's a personal bias of mine 

On the set up. Sounds like you are a good metal man. If so thing I would do is weld a tang on the action to give a better tang sight mount.  I have and still do shoot a lot of issue Trapdoors and one time had one of the H&R officers reproductions. Weak point with the H&R other than build & material quality was the lack of good tang sight mounting. Screwed to the wood is a poor compromise and reason I sold it off. Could not count on the zeros match to match.

Put a nice wiping rod on the gun however. For actual  Trapdoor shooting we are using "spaghetti' cleaning rods. Get a piece of Delrin it takes threads for a jag good as metal and in 1/4 inch is flexible enough to wipe the bore from the breech. All it takes is a quick wipe shot to shot, Scrub it clean from the muzzle with a Arsenal type wood rod that has a Delrin or wood muzzle guide indexing on the outside of the barrel.

Boats

Bears,
Sounds like you are headed down the right track.  Glance at the rules for BPCR Silhouette Stocks. Comb, 3/4" below bore. no hooked buttplates, etc. Don't know if they apply to all BPCR.
Chuck

Well, I guess that kills most of my stock design, guess it,ll be mostly traditional then, maybe a winchester flat buttplate.  Like off the model 70.  It'll still look ok, but a straight wrist should be ok.  Oh well, I have a couple receivers so I guess I'll just have to build a couple rifles, 32-40 schuetzen sounds good for plinking and deer.

I think I can the dimensions right for me with regards to off hand and off sticks.  I've done it before with target style muzzleloading guns.  Just need to read the rule book and find out just what I can and can't do as far as design goes.  Is there anything in the rule book about the so called "shad belly" style forends? My book hasn't got here yet.

Ok, next stupid question.  I have a reasonably reliable and steady source for titanium, is there anything that says I might couldn't make a hammer out of it?  Probably help speed up the lock time a bunch, and a titanium firing pin will be in the works as soon as I get a pin to pattern off of as I've used them in several turnbolt and semiauto guns with good results?