CyberVirus:

It seems that your questions pose more than one requirement for a response:

Wildcats:

First off building a "wildcat" is an ego trip more than an accomplishment. With more than 6,000 calibers to chose from there isn't very much that is left to invent - " not even the wheel". Exotic wildcats can become expensive. Odd ball dies, no ammo availability.

Recoil:

Shooting heavy recoil rifles is a matter of two considerations:

1. Benchrest. They beat you up. They hurt your shoulder. They hurt your fingers. Take all precautions. Use a Bull Bag under the forearm. It grips the forearm. Stack a bag of lead shot between you and the butt. Strap on a Past shield.

2. In the field. Forget recoil. When shooting game you DO NOT FEEL IT AT ALL.

Accuracy:

Accuracy is not a function of caliber. It is a very extensive subject that requires a monumental amount of explanation to cover completely. Suffice it to say that a .45 caliber rifle will shoot groups consistently that are MOA ( Minute of Angle ) at 500 - 600 yards.

Physics and Ballistics:

There are more than 120 different single base and double base powders. There are uncountable different bullets available. When the rifle is fired a physical event takes place ( internal ballistics ). It is predictable and calculable . A given amount of powder will produce a predictable amount of recoil.

In the case of a .375 H&H Magnum for bench rest shooting the load can be reduced. For field game shooting the load can be "souped up". Different powders have different speeds of burning and give different performance. The use of a good ballistics software program will very quickly establish all of the necessary parmeters.

It should be understood that there are no shortcuts. A .375 that performs has to be loaded to perform. Recoil is a consequence. A .375 that shoot's with the recoil of a .30-06 will perform like a .30-06.

A .375 H&H Magnun should shoot 2400 fps to be up to expectations. It isn't necessary to shoot faster on any North American big game nor most African dangerous game.

Bill Tibbe