I have both Leupold 2 piece sets (for the Mod 70) and like the std front and reversible rear the most but am still unsettled about having to turn the rear with windage screws forward to obscure some of the magazine well.

What have others done? Is there a mount system that doesn't encraoch on the magazine opening? Need to be able to use 30mm rings for a Z6 1.7 to 10

I can't recommend the windage adjustable bases for a .375 Imp. I have seen to many of them fail under heavy recoil especially when large scopes are used. Simple physics. I would want something with more purchase on the ring. Talley, Leupold Dual Dovetail, etc. that will stay put.

I would use Warnes....or Talleys...

put on claw mounts - you will never get better and you will not regret spending the money.

long after the price is forgotten, the quality remains.

I would suggest Talleys, but I suggest you have someone take a Weaver styled 2 piece base and open it to 8x40 screw diameter instead of the 6x40 screws that are on it. Then I would use blue locktite or expoxy to ensure the thing never came off.

You could also have NECG put a EAW on it or Griffin and Howe put a side mount on it.

The EAW mount is $400 plus $150 installation.

The G&H side mount is about $650-850.

I'd use talley's on something like that. That's what I have on my winchester M70 stainless 375 H&H. I only use the windage adjustable rear bases when there's nothing else available. I've got a charles daly 30-06 that cost $260 with the windage adjustable rear base on it. I don't like them but that's all that was available for a reasonable price for that rifle. Otherwise I avoid them like the plague.

I second D99's recommendation to move to 8x40. I prefer silicone to locktite or epoxy though. Most of the time a tiny amount of oil on the threads is all that is necessary, big guns aside.

I third the larger screw suggestion. I've had more trouble with bases shooting loose than with the base itself. Far more in fact. I think my smith charged me $40 the last time I had it done.

I have a Near Manufacturing single-piece base on my long action, magnum M1999. Is the 375 H&H a long or extra long? I don't know...

Near is in Canada. His mounts cost about $200. They are the finest single-piece bases made. They are of the Picatinny variety, are milled from billet steel and come with various angles of slope. They come in blue or stainless. Search near manufacturing scope base and you should find it...

www.nearmfg.com