I would not really call this "pistolsmithing"..... it is just machining. But a little bit on the artsy-phartsy side maybe-- when I do something like this I sketch it up but that sketch is not the hard plan..... it's the "general direction". Details, I make them up as I go. The real smithing on this gun has already been done, and some time ago-- by Vic Tibbets, and no doubt, some more by its very capable owner, my Danish cousin Jess. Jess is a very-to-ranked revolver shooter and just in the last six months has done very well at the IDPA Nationals in CO and a few weeks ago at the World Speed Shooting Championship in AL.
This 6-shot, .45 ACP Model 625 is the gun he uses at The Pin Shoot in the 8-Pin event. 6 shots, 8 pins, yup-- the reload is kinda important.
Will a wild comp like this make all the difference? Will it give him the advantage he needs to get the "walk" in this event (walking to the prize table)? Well for other people it might help...... this particular guy it is almost impossible that this comp will be of any help, because-- he has never placed lower than 2nd in the event anyway! But in pin shooting, as long as it is not prohibited, it is allowed, and pin shooters have a long history of going to great lengths to get "the walk". How about two Rem 1100's, one left and one righty, fused into a single gun? Wild compensators, very specialized loads, guns that are for one purpose, for one week a year: Pin Guns!
No mods to the gun here other than the ramp leading up to the front sight base has been milled square to make it a locking abutment for the steel top cover the fit over. This top cover (prehard 4130) is held to the comp with two 10-32 cap screws but more importantly it has four 3/16" steel dowel pins to postively and accurately locate it to the comp body (7075 T6 aluminum). I was going to cross-pin this one on but getting the hole in the back for the barrel to fit into was going to be a really tough shape to machine into the solid so I did what we did in moldmaking-- you make the cavity shape in two (or more) pieces; into separate pieces you can machine all the shapes you need (sometimes) without resorting to EDM. You get all the inserts pieces together and voila, you have the cavity shape you need.