Those loads were not suggested by me. I am merely quoting words from Savage owners and owners of SMI barreled rifles. I've zero experience with smokeless in a muzzleloader and fully intend to keep it that way. But I do find the evolution and development of loads on the smokeless side worthy of attention.
"(UC's mysterious 3000 fps 200 grain projectile)" is neither mine nor a mystery but a load and performance suggested very seriously by a smokeless owner. Another says,"
I was shooting my favorite load: 76 gr H4198 - 250 Barnes TMZ. The gun was extremely clean and I did not fire a fouling shot. Temps were in the mid 70's and I used a chronograph. At 100 yds my 3 shot group was 1 1/8 inches with a velocity of 2,698 ave.."
Those are things being done and attempted doneby owners of smokeless muzzleloaders, not by me. No, I do not recommend or encourage the use of ANY load in a smokeless muzzleloader.

They are still beyond my personal envelope of what is acceptable to use in a muzzleloader hunting season. The fact is theyCAN exceed the performance of many centerfire rounds and I just don't see how that fits in any way (aside from being legal to usein some places).... at least not on my shoulder.
If someone else chooses smokeless, that is their choice. AndI'll have nothing to say against their using such a rifle so long as it's legal. But it isn't for me.