Mosing Nagant Pu Repo Scope Question

[john2139]

I bought a Mosin Nagant Repo Pu scope and I wanted to know what the pins it came with are used for?

Thanks

[cruddymutt]

The pins are for the base that mounts to the receiver. The base is mounted via 2 pins and 2 screws. The pins are there to take the shock of the recoil off the threads of the mounting screws.

[john2139]

I cant find a good set of pics of the holes drilled. Any good links of solid write ups on mounting?

[john2139]

Ok so found some good pics have a good idea of where to mount. Now i will be drilling four holes two for the screws to tap later on and then two for the pins. Do I grill all the way through or just partial for the pins.

thanks

[cruddymutt]

I have never drilled/tapped my own receivers and my three Mosin snipers are all exsnipers. Luckly I have a gunsmith living up the street that charges me $10 a hole. $40 to mount a base is too cheap to screw it up myself.

[TRAP55]

Drill the pin holes first!
The front one will be lined up behind the locking lug area at the rear of the receiver ring.
The rear pin will be lined up with the stripper clip guide slot.
Drill the rear one first, install the pin, install the rail, and clamp in position as a drill jig for the front pin hole.
Receivers are case hardened, hard as nails on the outside, a lot softer on the inside. Use lots of machine oil while you drill. Go slow!
Don't drill all the way through, if you do, don't panic, you'll just have lots more work to do stoning the exit hole for smooth bolt operation.
Your drill that was provided with the mount, is slightly smaller in OD than the pin, and the pins go in hard. Use a brass head hammer so you don't "mushroom" the heads. They have to fit in the receiver rail.
Pins are in, rail is on. Clamp the rail and you have a drill jig for perfect screw hole alignment.
Screw holes are going to be drilled all the way through. The ends will be more or less flush with the bolt guide rail when they are tightened down. There will be some raised metal in the guide that you'll have to stone smooth.
The rail screw locking screws are a PITA to install. I skip that and just Loctite the rail screws.
This all sounds complicated, but it's one of the easier mounts to install. It's very forgiving for slightly imperfect alignments, as the mount and scope have quite a bit of adjustment to compensate for an "oops".

[john2139]

Thanks for the walk through got it mounted and bore sited today have to wait an dial it in when I'm able to get to the range.