I've loaded for several, one begin my own - years ago, before I dropped the ctg. I had difficulty with 24" bls. of getting much over 3,000fps with 160gr. bullets, with safe loads. A 26" bl. might do another 50fps, which has no tangible value.

If I had another 7mm larger than a 7x57, it would probably be a .280 AckImp. which about duplicates the 7mm Rem Mag and does so with a rimless case, which I prefer.

I would also concentrate on premium 140 to 150gr. bullet and use the rifle as a long range deer round, which it is. For heavy game, there are so many more suitable rounds of greater killing power - even my 9.3x57 is a better moose round.