A 300H&H would be damn nice. I have a couple H&H action rifles as well. I don't know what mounts you got. Assuming weaver style, as those work great on these rifles. I started a thread last year on a rifle I put some Warne mounts on. I did that because I was a little irritated that the mount extended out over the front of the receiver:
[Linked Image from i.imgur.com]
I ended up cutting that base and then rebluing it. Here's the thread:

Mounts for pre 64 model 70 H&H rifles

Originally Posted by raybass
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style.
Originally Posted by Pharmseller
You want to see an animal drop right now? Shoot him in the ear hole.

BSA MAGA