It is a point of fact that the finest firearms ever produced on planet earth are/were hand-built. A $5000 Best Grade Bowen gun is built by hand, not stamped out on machinery. A $250,000 Purdey double is built by hand, not stamped on out machines. That much has not changed. Anyone who believes that the new mass-produced S&W's are better than hand-built Triple-Locks and Registered Magnums is delusional. THAT was my point.
The switch to MIM parts is purely to reduce manufacturing costs. It reduces several machining steps. They don't have to cut the checkering on the hammer spur. They don't have to mill holes for pins. They don't have to cut notches on jigs. They don't have to mill them into shape. They don't have to harden them after-the-fact. Nor do they have to hand-fit all those parts to make them work. All they have to do is have a monkey assemble them. If you think all that makes a better firearm, S&W will sell you all you want.
As for STI, I have yet to see or handle one. I'm sure they are as nice as reported, though I have absolutely no desire to own a fixed sight 5½" .45Colt single action. Ever. I know they are producing their Texican on EDM machines. An extremely precise machining method but very slow and unsuitable to mass production. Gunsmith David Clements produces hammers, triggers and barrels on similar machinery. The process is very well suited to small production runs. I have no firsthand knowledge of STI so I really can't comment any further. Although it does prove what finely built and precision revolvers can be built for not much more than a new S&W. If STI and USFA built double action revolvers, S&W would be dead to me.
About scratched hammers. The hammer well, or slot in the frame, is the same width from hammer pin to firing pin. So the only way to prevent the hammer from getting scratched as it travels into and out of the well is to either machine the slot wider at the top, which would be unsightly. Or to shim the hammer at the pin.
Those 50000 dollar round action double rifles from holland and holland are built on CNC mills and lathes, this change on production (excluding the Royal series) this change in production was initiated by chanell (the guys who make the perfume and own holland and holland). Little hand fitting is done.
There not built by some little old man with tiny round glasses and a file anymore. Still shoot fine though.
What exactly are they producing with an EDM on the texican? If it were solely EDM your pistol would cost 7000 dollars, do you know what EDM is? Electro discharge machining is what it stands for, its used to sink cavities in very hard steels, sometimes for rifle chambers. You dont build an entire gun or a shape for that matter with EDM. You dont make gun parts with EDM. You sure as hell cant make a gun barrel with EDM. EDM operates through spark erosion eather with a copper wire or a graphite electrode thats submerged in a dielectric fluid, coper or graphite makes sparks when it contacts the metal and vapourizes a bit of it. not used for making gun parts (with rare exceptions of the initial cavity in some bolt actions and rifle chambers) hows he cuts the rifling in the barrel with an EDM? he doesnt. Before you start bemoaning a loss of machining steps, I recommend learning what machining is.
You must be thinking UHSM (ultra high speed machining) which they do do, and yes it results in a better product, but you cant use it for cutting rifling, and the chambers are still cut the old fashioned way so whats the point? Shave of an extra 0.001 here or there? Its very frustrating trying to explain manufacturing tolerances to people and how they affect things, guess what to little slop is a bad thing, a very bad thing.
As a journeyman machinist I can tell you I've heard every bogus mythical steel story there ever was and they usually center around weapons and cars. The manufactures come up with these gimics to make men well up tears in the corners of there eyes as they plunk down an extra grand or 2 on there new excalibur.
Take CPM 440V guns guys are often knife guys, and you think spyderco makes a good knife right? and that CPM 440 V is a good steel right? ITS SINTERED!!!!, that evil powder metal process is used to make CPM (which stands for crucible powder metal) 440 V and it IS A BETTER STEEL.
BUT BUT ITS NOT FORGED IN SOME SACRED CAVE??? no. Samurai swords? Made from the CRAPPIEST steel ever devised, but they made due by actually beating most of the slag and crap out of it, they are made with the equivalent of that black crap that spews out under a cutting torch, and oh ya, smack one sideways against a tree and see it snap.
Back to guns, take the old merwin and hubert revolvers, all hand fit, forged and machined parts. The damn thing is just as likely to blow up in your hand as look at you, a MIM gun would eat it for lunch.
Shiloh Sharps (same gun old quigley shot) Cast parts
Oh ya, unless its an old and wonderfully cheap revolver from spain (which gave cast parts a bad name) EVERY AMERICAN AND EUROPEAN manufacture reams out pin holes in hammers and frames, the technology just isnt there to have a hammer pin stay in place without it being reamed to size, since MIM hasnt reached that precision yet.
Yup the registered magnums were built nicer, to make up for the crappy forged frames and steels they had available at the times, again modern MIM steel frames are stronger then a registered magnums any day of the week.
MIM parts are heat treated, ALL steels used in gun frames must be heat treated or they cool to a normalized state (very soft metal) resulting in bad stuff. Same with hammers.
This is the crap that vendors have put in peoples minds, because emotions make sales.
Unless your willing to go back to the days of 1200 dollar microwaves, 500 dollar cordless phones and 300 dollar toaster ovens I recommend you embrace new manufacturing practices, because chances are your enjoying them everyday and dont even know about it. Also in the "good old days" man would gladly plunk down 2-3 months pay on a saddle, or a pistol and fine crafted weapons were strictly owned by the aristocracy. You wanna pay 6 grand for a good .22?
FWI: MIM parts are still machined, the just dont have to me machined ALL OVER like a big unwieldy forging does, since forgings cannot be made as precise as MIM, this is why you see machining all over on the old guns, it doesnt necesarily mean its any more precise than MIM, due to the fact no manufacture is going to hold 0.001 tolerances on a frame cavity were the springs sits, the hole placement is critical, but those tolerances are maintained in MIM because holes are drilled after the fact.