Kieth type in 250 and above loaded and tested in your revolver for accuracy. BTW read Mr. Kieths books, lot and lots of good information.
Most fans of Elmer Keith are quite familiar with his book "Hell I was there!".
However, he wrote an autobiography prior to this, simply entitled, "Keith, an Autobiography.".
Friend and fellow Forum Member "SuperMan" aka Bob, gave me the book as a gift. I kept it at my cabin which is in the very heart of Elmer Keith country in central Idaho.
This is book was signed by Elmer Keith to Bob in 1977, which makes it even more special of a gift to me.
It will always be a prized possession in my small collection of important books.
Bob has visited and spent a good bit of time at the cabin. He and I drove around and did some exploring in the same areas the Elmer Keith did, as well as did some long range handgunning.
We were however shooting .41 Magnums (Bob) and .44 Magnums (me) as well as some other cartridges for the most part.
BTW,
The Keith designed 270 grain wide meplat semi wadcutter is a very accurate bullet and the fact that it is still very popular today should be a solid indiciator as to its effectiveness.
I find that when driven at a moderate speed, such as 900 FPS out of a 4 & 5/8ths" barrel (as tested in a Ruger Flattop) it makes for an ideal all round load. Easy to shoot well, tolerable recoil, and excellent terminal ballistics.