Uneven forcing cone erosion
- Thread starter stillhere
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Nemo288
Member
S&W has to know that 90% of all 44 rounds are going to be home loaded.
They may ignore it and pretend it doesn't exist but if they refused to fix all the guns that ever had a handload
in them they would not be fixing any 44's (or many 38's for that matter).
Can you you see them refusing to send, say, Brian Pearce a test gun for an article because he might load for it?
Brian Pearce on the 44 Special.pdf
Having said that, I'll admit it won't hurt to keep quiet about it.
They may ignore it and pretend it doesn't exist but if they refused to fix all the guns that ever had a handload
in them they would not be fixing any 44's (or many 38's for that matter).
Can you you see them refusing to send, say, Brian Pearce a test gun for an article because he might load for it?
Brian Pearce on the 44 Special.pdf
Having said that, I'll admit it won't hurt to keep quiet about it.
Looks like the outer (rear) edge (ID) to me. (The inner edge would be at the rifling origins, just so's we're on the same page.) Nice cut rifling BTW, the non-PC 629s have had ECM'ed bores for a while. Which hasn't been a bother as far as I can tell.
If the gap's uneven, it's not a big drama to sort if you've a light touch with a small fine file. Will open up the B/C gap slightly, but shouldn't be any worse when done than the widest gap is now.
Seems that the last of the real experienced gunsmiths recently retired from S&W, according to some threads on this forum. So...
I'd rather take a beating than send something back. Have had enough of that! And I used to be the service department (1980s) for what's now a major player in the handgun market.
Still curious as to what the throat diameters might be. I have a 686 that measures 0.356" in that respect and whilst it shoot jacketed bullets very well indeed, it is a complete waste to try lead bullets! Could rent a throating reamer, but there's plenty of other .357s in the stable that fill the need for my cast bullet shooting. Similarly, the DX 629s tended to run small for a time.
Hope you get it sorted. Do please report any progress.
Nemo288
Member
Looking at that picture again reinforces my feeling that the entire cylinder is offset to the bore (a couple thou high).
This is going to shave the side off the bullet which is now way out of round and too small.
It might as well be going sideways down the bore
Here's a shot of my 1985 4" 625 cone.
This has had many hundreds of mostly lead and some copper rounds thru it.
Notice how the change in lighting makes everything look different.
The truth is somewhere in between.
This is going to shave the side off the bullet which is now way out of round and too small.
It might as well be going sideways down the bore
Here's a shot of my 1985 4" 625 cone.
This has had many hundreds of mostly lead and some copper rounds thru it.
Notice how the change in lighting makes everything look different.
The truth is somewhere in between.
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Looking at that picture again reinforces my feeling that the entire cylinder is offset to the bore (a couple thou high).
This is going to shave the side off the bullet which is now way out of round and too small.
It might as well be going sideways down the bore
It's possible, but to get actual shaving you'd have to be nearer 0.010" off! I have an 1892 DA Colt that does precisely that, fortunately .38 Long Colt is pitifully anemic! Only keep the wretched thing because it was US Army issue.
If the frame's barrel threads are indeed off, then it's new revolver time. Otherwise, some relatively minor tweaking ought to solve things. Could figure lots more out in about five minutes if the thing was in hand. Otherwise we can speculate for days without some measuring and gaging from stillhere's end.
