460 PC Bone Collector Cylinder issue ?

Not so odd given that i have worked 156 hours in the last two weeks ... My recreation time has had to take a back seat.

-John


Roger that. Work before play.

Just very interested in how this turns out for you, hopefully well.
 
I finally made it to the range today to shoot the 460. A heck of a lot of fun i must say. However, very disappointing with respect to the gun. After just a couple of rounds of Federal 275 grain loads, the "contact" marks returned. I am convinced that the cylinder is contacting the top strap. Apparently smith thinks that this is OK, but i dont see anyone else with this issue. So do i send it back again ?
 

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I've been following your problem. Your cylinder frame is out of spec. Hence the top strap makes contact with the cylinder.
I dont think much can be done other than to mill out part of the frame, providing theres enough meat left on when done. Otherwise you need basically a whole new gun. This is probably why S&W doesn't want to make it right.
This problem will only get worse as you shoot it.
Document it all and try for a refund, then buy one you can inspect prior to purchase. Good luck.
 
Well, due to the limitations of my outdated computer, I cannot see the pic in enough detail to offer an opinion.

Thanks for the update, and I hope that S&W makes this right for you.

Can you feel or hear the cylinder dragging at all as you rotate it?

Just thinking out loud, seems like it might feel a bit "sticky" during rotation if the frame and cylinder are touching enough to make marks on the cyl.

To be completely honest with you, it looks like normal residue that is deposited after firing. But as I said, I can't see the pic in enough detail with my equipment. No argumentative intent here.
 
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I've been following your problem. Your cylinder frame is out of spec. Hence the top strap makes contact with the cylinder.
I dont think much can be done other than to mill out part of the frame, providing theres enough meat left on when done. Otherwise you need basically a whole new gun. This is probably why S&W doesn't want to make it right.
This problem will only get worse as you shoot it.
Document it all and try for a refund, then buy one you can inspect prior to purchase. Good luck.

You may be right, the gap between the top strap and the cylinder looks to be about 1/3 the space than on any of my rugers and my wifes 638-3.
 
Yes, you should see a constant gap along the back strap which allows room for normal barell rotation. As you have, compare yours to pics on the S&W website to compare.
 
Well, due to the limitations of my outdated computer, I cannot see the pic in enough detail to offer an opinion.

Thanks for the update, and I hope that S&W makes this right for you.

Can you feel or hear the cylinder dragging at all as you rotate it?

Just thinking out loud, seems like it might feel a bit "sticky" during rotation if the frame and cylinder are touching enough to make marks on the cyl.

To be completely honest with you, it looks like normal residue that is deposited after firing. But as I said, I can't see the pic in enough detail with my equipment. No argumentative intent here.


The rotation and trigger on this gun are smooth as silk, just what you would expect from the PC.
 
The rotation and trigger on this gun are smooth as silk, just what you would expect from the PC.


OK, so from the top: What you believe is happening is that during firing of a round the cylinder hits the top strap during recoil? I would think that if this is happening that you might be able to jiggle the cylinder manually to close the gap between the cylinder and top strap. Might be worth checking the way you would check end shake. Take a measurement with no upward pressure on the cylinder, then apply upward pressure and see what it measures if you can get a gauge in there.

Have you run a feeler gauge between the two to get a measurement?? I wonder what the gap measures.

This is very puzzling to me. Maybe we can figure out something you can put your finger on and specifically report it to Smith. The cylinder should not hit the top strap during recoil.
 
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RIDE-RED,

Your timing could not be better.

Smith received my gun on 3/6 and i got it back today.

It looks great, they "refinished" the cylinder, thats all.

There is no fouling so i have to assume that they did not shoot it. I guess i will find out if the cylinder is hitting the top strap this week when i shoot it ...
Most of us can only guess without having the gun in our hands. That being said..I still think that the marks in question are residual carbon from firing. Do you have a lead away cloth or some mother's that you can try to see if the marks go away?
 
Look at the right side of the revolver. There is a screw that is a key screw that holds the internal cylinder pivot rod. It is advised to tighten that screw that gets loose from the pressure and impact of the round. This can be very dangerous. This screw can be coated with purple threadloc. then re-installed. It is imparative to check all screws on any 454 Casull and higher power revolvers. tighten the screw and if it was loose, it may have been your dangerous problem. With it loose, the cylinder can be fired misaligned.
 
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Its the screw just below the cylinder28912-DEFAULT-l.jpg I have seen this twice with this frame. ALWAYS check screws on all big bore powerful hand guns.
 
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