Have been looking at a S&W revolver model 66-4 and can't find any info on what the -4 stands for? Anyone know.
Have been looking at a S&W revolver model 66-4 and can't find any info on what the -4 stands for? Anyone know.
Could it be for the 4" barrel?
In 94 they changed rear sight leaf, drill and tap frame and changed extractor.
95-96 delete square butt features
In 97 they changed thumbpiece and change to mim trigger
These were the engineering changes for the (-4). Every change had a dash # after the original introduction. The 66 was introduced in 70. Lots of changes over the years. Great pistol, you won't regret. I like s&w.
Thanks yetti462.
You're welcome, what inch barrel does the 66 you're eyeing have?Originally Posted by Dave A
4"
Check the forcing cone for cracks.
It's the 4th production. They start as 66 - no dash, each time they make changes they add a number as Yetti462 says.
2018 G3 Sportsman 17 90 SHO
Yep, 4th gen model 66 good guns, check the frame above the forcing cone for cutting. They are quality guns but shouldn't be subjected to full house .357 loads all of the time.
21 Lund 1775 Impact XS 21 Merc 115 Pro XS
There does appear to be a line across there that i can see and feel with a knife point, it goes all the way across the frame. It's right on the edge of the sight mount screw, could it have been made with a file maybe.
-4 means the fourth revision since release I assume the post number 3 is accurate and covers it.
"the liberties of the American people were dependent upon the ballot-box, the jury-box, and the cartridge-box; that without these no class of people could live and flourish in this country..."
Can't see any.
That will be cutting flame and powder from the barrel/cylinder gap. It's going to occur, especially in the magnum calibers. Typically it's self limiting and is not a concern.
2018 Tracker Pro Team 190 TX
115 Mercury Pro XS 4S
Yeah, usually only the aluminum frame revolvers have flame cutting issues. That and the ones chambered for cartridges that are known to have a lot of erosion like the 357 maximum, 357 baine and davis, etc. It will wear some for the first so many rounds and then will stop.
The worst loads for flame cutting in 357 magnum are the light bullet loads. The bullet pauses or slows down briefly as it reaches the forcing cone until sufficient pressure builds behind the bullet to swage it and force it through. If the bullet is long enough the bullet is still in the cylinder when this happens. If the bullet is short enough it will have exited the cylinder while kind of plugging the forcing cone while allowing the high pressure gas to escape form the gap. Basically allowing the high pressure gas to escape for a longer duration than with normal weight bullet loads.
This is why the aluminum alloy (scandium trace) frames chambered for magnum cartridges have a bullet weight requirement. They also have a steel (I believe it is steel) insert at the most vulnerable part of the frame.
Last edited by Transom; 02-19-2024 at 08:42 PM.
"the liberties of the American people were dependent upon the ballot-box, the jury-box, and the cartridge-box; that without these no class of people could live and flourish in this country..."
Here's a couple of reviews. A lot of people do not like the newer revolvers with the key lock. They always lose the key, it's very small. Another dislike is the satin finish as the second reviews says.
https://www.thetruthaboutguns.com/gu...-357-revolver/
https://www.gunsholstersandgear.com/...del-66-review/
Remember, newer isn't always better. In this day and age, it's all about the net profit, not the quality.
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