I still have 30 of a box of 50 of those 325gr FTX's. They were bought 15 yrs ago for my NEF single-shot in .45-70, which I took wolf hunting in January. Never shot a wolf but they were accurate at ~2400 fps. Have never loaded any since nor fired any in my .458s. I'd donate them to someone handy in Ontario.
But the Hornady 250gr MonoFlex is a bullet I like very much from my Ruger No.1 Tropical in .458. It's very accurate and punches well above its weight. I've two loads for it, and neither is max: One from Sir Ron that shoots into sub-moa - 65 grains of A5744 at ~2610 fps, and a load I put together using H4198: 69 grains of H4198 at ~2708 fps. That too is sub-moa. Using a max load of H4198 I've gone over 3000 fps with that bullet, but there's little point as the velocity drops off rather quickly due to a rather poor BC. However, using Sir Ron's load, I test fired it into a very tough media (dry glossy magazines) from 10 ft and it retained 94% of it's unfired weight. So, that's one of my "go-to" loads for this area where shots will never be more than 150 yds. It's also very mild in recoil at about 30 ft-lbs, less 15% from the Mag-na-ports = about 25 ft-lbs - about the same as a heavy load in an 8 lb .30-06. A5744 is not quite as good as H4198 in resistance to extremes in temps.
That bullet was made by Hornady for the Marlins in .450 and .45-70 at around 2200 - 2300 fps max... and recommended for elk, moose, bears, etc. The 325 FTX has a lead core and is much more frangible.
All of that is somewhere earlier in this thread, but this may save having to read the whole document - which you should anyway.
