I've been loading for this cartridge for well over 30 years. 45.3gr of IMR 4198, R 9 1/2 primers gave me exactly 2200 fps and MOA with the 265gr FP. I decided to try the new factory Hornady Superformance with the 265gr FYX advertising 2350 FPS. Tried it with the new Marlin posted here as well as my 80 vintage MC 444. Velocity was right at 2345 and this kind of accuracy. With this new bullet and that kind of velocity, it makes it an EASY 250 yard rifle for whatever you want to hunt. I am VERY please with the new Marlin and the ammo. Just in case, I did order a case with the same lot numbers smile

Note: both are three shot groups after windage correction with a (GASP) Leupold scope... and the two holes above and outside the circles are 338 WM load test.

[Linked Image from i.imgur.com]

A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”