Gunsmithing Scope mount gap too large for epoxy?

[Dan1775]

I have a one-piece Talley mount for an 1885. When I snug up the front screws, there is a gap of 0.050" between the mount and the receiver (measured with feeler gauges). It was worse at the receiver if I snug the rear screws. The mount selection for this rifle is very limited so I am pretty much stuck with what I have.

My question is, is a gap of 0.050" too large to fill by epoxy-bedding? Should it be shimmed instead? It's a tapered octagon barrel, so I'm not comfortable machining a few thousandths off the front mounting surface.

Thanks,
Dan

 

[Terry Cross]

Flip the mount, match the bottom radius and set it back 0.050". Boring bar on an adjustable fly cutter zeroed under a milling machine.

That would let the mount sit down flush on all intended contact points.

./

 

[fdkay]

Sounds to me like you might want to reach out to Mr. Cross and see if he is available for the work!

 

[Terry Cross]

Sounds to me like you might want to reach out to Mr. Cross and see if he is available for the work!

Not no but Hell No! LOL.

His little 1885 is a nice rifle and he could certainly find somebody to handle it. I'm just too backed up with my regular work and not smart enough to do anything about it.

 

[fdkay]

Not no but Hell No! LOL.

His little 1885 is a nice rifle and he could certainly find somebody to handle it. I'm just too backed up with my regular work and not smart enough to do anything about it.

Glad to hear business is good.

 

[Dan1775]

Boring bar on an adjustable fly cutter zeroed under a milling machine

Well, I understand all those words individually, just not put together in that order... Way past my minimal machinist skills. You'd probably shudder I told you what I was considered doing with it on the mill. Thanks, though. I nowhave a road map for someone to potentially do the work.