What is it you want to do with them? Hunting? Blasting? The loaded ammo you reference is listed as subsonic, so you planning on shooting them suppressed? (and if so, more details please!
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If you're looking for maximum energy, I get more energy from a light bullet traveling faster.
350 gr. XTP @ 1295 fps = 1301 ft-lbs
300 gr. Underwood GDHP @ 1457 fps. = 1415 ft-lbs
335 gr. Rainier @ 1420 fps = 1500 ft-lbs
(all actual velocities chronographed from my gun)
The 460 gr. Bengal @ 1050 fps = 1126 ft-lbs.
Now if hunting large animals, there is something to be said about a heavy solid performing better than a lighter / faster bullet, even if light / fast produces more energy. So for that purpose, the heavier / slower bullet may still be preferrable.
Those bullets look like they are poly-coated. While I have shot some coated bullets through at least one of my DE barrels, I have discontinued that practice. This is based on some experiences I've had in other guns when I had some commercially produced coated lead bullets where the coating was apparently applied incorrectly. These resulted in terrible leading (plastic-ing?) in the barrel. I can't imagine trying to get that gunk out of a DE gas system.
YMMV.