Thread: What Parker hale rings do I need ? (No4 303)

First question I have, is the mount and scope for sale or even the mount by itself? I have a sporter already drilled to fit one of them and have been looking for one...

The scope rings listed above are the right ones to fit your rear mount - but to clarify what everyone hasn't explicitly stated the front base on your rifle is a chopped off weaver-style and does not match the BA21 rear base.

This will give you issues unless you grab Gary's correct front base as well - this will sort out the height mismatch and the fact you need to run two sets of rings.

Your next issue that was unfortunately common with these setups, is the floppy rear base (just hanging on via a cross pin) is a really insecure way of mounting a scope. If you plan on using a modern ali tubed scope, make sure it has a good warranty on it as these setups are brutal on scopes. This is because the action is locked at the rear of the bolt, not at the front like a Mauser-derived action or a modern Remcheshowikka what have you. Every time you fire the thing, the scope will take an amount of the forces as everything stretches between the solid front mount, the rear base and the action's locking recesses. This is why the mount you have pictured lower down came into existence - to try and isolate the scope from the shock of recoil. The Pecar likely won't survive the experience of the No4 with split mounts like that just for reference. I have a damaged one loafing that is testament to this issue!

Options you do have if you want to run a lightweight modern scope, is get hold of a one-piece bridge mount or the correct sidemount scope base setup and run with that. As far as the bolt removal, the bottom of that BA21 mount should be recessed to allow the bolt head to clearance under it same as when the base is tipped up to the vertical position although some early ones were not. Easy job to create the right recess shape in it if it isn't already there. The cone shaped hole in the BA21 mount is the recoil recess designed to engage the pin in the bottom of the rings that Gary mentioned. The correct front base has one as well.