I normally use Leupold fixed rings except for my 375 H&H which has Leupold QD rings. I like to be able to take the scope off the 375 if needed because that is my African hunting rifle and sometimes a scope can be a hindrance or even dangerous in heavy cover with things that can kill you. I've got it sighted in for 50 yards with open sights and can take the scope off in a matter of seconds. The Leupold QDs hold their point of impact when it comes off and on.

I've got a buddy that does the same with his 416 Rigby and 375 H&H but he uses Talley. What can be said of Leupold also goes for Talley.