Drilling claw mount (SEM) scope rail

[KoedoePoesPienk]

I have a rifle with claw mounts and a very old scope, it all works fine.
I was recently given a newer scope that I'd like to replace the old scope with.
New holes will need to be drilled in the rail of the scope where the screws go through.
I don't know of anyone around here that does that sort of thing, which got me wondering....How hard can it be to drill a couple of holes....
I Imagine that the slanted/sloped shape of the rail will make the drill bit want to jump/slide towards the scope tube a little bit.

Have any of you ever done something like that?

 

[Muskox]

You would have to post photos. There are several ways that claw mounts attache to scopes.

Usually the rail has bolts that go through the bottom, and the rail is drilled and tapped for the mounts.

In new mounts, the rail is fits into a recess in the bottom of the rail. Your rail mounts are probably SEM type.

https://www.kaps-optik.de/sportoptik/zielfernrohre/classic-line.html. Is a modern company making original SEM Rail mounts. If you are in Canada you should be able to buy without the VAT cost here in Germany.

I would heavily

 

[KoedoePoesPienk]

You would have to post photos. There are several ways that claw mounts attache to scopes.

Usually the rail has bolts that go through the bottom, and the rail is drilled and tapped for the mounts.

In new mounts, the rail is fits into a recess in the bottom of the rail. Your rail mounts are probably SEM type.

https://www.kaps-optik.de/sportoptik/zielfernrohre/classic-line.html. Is a modern company making original SEM Rail mounts. If you are in Canada you should be able to buy without the VAT cost here in Germany.

I would heavily

“Usually the rail has bolts that go through the bottom, and the rail is drilled and tapped for the mounts.”
This is the mounts and scopes I have.
I just need to have the newer scope drilled na tapped for my SEM mounts.