John Wayne: Yes, the Model 64 is built on the K-frame.
Thaddeus Jones: I cannot speak to the current batch J&G may have in but in the past there have been pre-lock Model 64's available. I would call them and for me, the extra charge to pick up a pre-lock would be worth it. I have not done business with these folks in several years but in the past, no problems at all. Friends who have dealt with them more recently had good dealings with them.
Though not (directly, at least) through J&G, I was lucky enough to purchase a couple of Model 64's from a private individual that had been obtained through a similar type sale of used revolvers by a company. I believe that he said that these .38's had been owned by an armored car service or something similar. They were of the NY-1 style. These had a little holster wear but actions were smooth (w/o reducing spring power), no excessive endshake and cylinder lock up was well before the spurless hammer dropped.
This used "security guard gun" has turned out to be a favorite shooter. As might be expected from a security company or police "trade-in guns", it had a ding or two. (I call them "honorable battle scars" and removed most of them with a little time using very fine sandpaper and changing out the rubber stocks for an old set of S&W's that I'd refinished years ago.) This one came in the NY-1 configuration. It will stay as it is.
On the first range session, I fired 6 slow-fire shots at the emblem above the words, "Qualification Targets" using Georgia-Arms 158-gr. LSWC ammunition. 6 rounds were then at the head, also in slow deliberate fire. I don't recall if the torso shots were done at farther distance or just rapid-fire at various distances. The slow-fire shots were done at about 7 yards or so.
I am no match shooter, but this is plenty accurate enough for my "needs".The revolver show here is capable of both DA and SA but was fired double-action.
I was lucky in that in my early years as a police officer, I was trained to shoot the revolver primarily in double-action by officers who were indeed national-level PPC (Practical Police Competition) shooters. Though not all of my revolvers are DAO ala the NY-1 set up, several are...and by choice.
If "Thaddeus Jones" winds up with a DAO spurless revolver, as "Old Fuff" mentions, it will cost about $50.00 or so for a new spur hammer as well as any extra charges should it require the touches of a gunsmith. Mr. Jones would have to decide if it is worth it or not for him...as mentioned by Old Fuff.
The farthest actual gunfight that I am personally aware of in which a revolver was used DAO and to good effect was right at 60 yards. An M1-Carbine wielding felon had already shot one officer and was trying to kill a friend of mine (police officer) with it when it jammed. While being shot at my friend took cover and then popped out to return fire double-action. When the carbine jammed, my buddy (finally) took his time and double-actioned the felon into a state of "permanent rehabilitation" with his sixth and final round via a then-new Super Vel .357 magnum to the center chest. The officer's revolver was an S&W Model 19. It was capable of both DA and SA fire, but he had been trained primarily in double-action shooting.
Though relatively few in number, the
only police negligent discharges I was aware of involved their service revolvers being cocked. None involved suspects being covered and only in one instance was the officer injured. It is my understanding that in NYC (and other places), there definitely were other folks shot, lawsuits filed and DAO-revolvers, the result.
For right at 4 decades now, I have been seeking the perfect handgun, caliber and so forth; I cannot find it. The DAO set-up has much to recommend it in my opinion but it cannot be all things to all people. A smooth double-action in trained hands really is more capable than might initially be expected as is suggested by Stainz in his post.
I have also learned that what is "right" for me may not necessarily be so for another.
I was lucky enough to pick up this lightly-used Model 64 from a private individual at a decent price. It shows a bit of wear and I refinished the S&W stocks. The gun's surface cleaned up nicely.
After shooting it to see if POA matched POI, I fitted this new S&W spurless DAO hammer to it! Some might think I am making a "mistake" and "am wrong". They are entitled to their opinion. I could not care less and would not be pretentious enough to attempt force-feeding my approaches to them. Double-action is primarily the way I shoot the defensive revolver. Not that he needs it in any form or fashion, but I agree with Old Fuff's assessment of what can be done in trained hands at distance in double-action.
I cannot speak for Thaddeus Jones, but I'd probably buy one of the "hand select" (or two) pre-lock Model 64's, shoot it and see what I thought about it. I'd shoot it for a couple or three range sessions just to be sure of what I liked ... or did not like before doing anything. If the spurless NY-1 style works for him, great. If not, it can be changed to stock configuration easily enough, though probably not without some cost...depending upon Mr. Jones' skill in fitting S&W hammers and whether or not he might already have such a hammer in his parts bin. I wouldn't let that be a deal-breaker though. Speaking only for myself, I really, really enjoy shooting my Model 10's and Model 64's. Despite owning several other make and type handguns, these are the ones I've been shooting the most for the past year or so. The Model 64 is sort of a "vanilla" revolver to many but they just seem to grow on you...at least they do on me.
If Mr. Jones gets his pre-lock Model 64, I hope that he enjoys it for years to come.
Best.