IMHO I believe the closest powder we could get to what youre describing is Alliant BE-86.
Its made to give the highest possible energies, with great case fill, and have low flash.... ideal for semi auto defensive ammunition in service calibers.
It's not meant to be the cleanest burning powder for high volume target shooting, or at least not the best at it anyways.
Powder cleanliness is only a concern of mine in my high volume target or blastin' loads. Cleaner powders are usually faster on the burn spectrum, but aren't ideal for higher velocities.
Yes, they can get up there, but with higher chamber pressures ;-)
Since Remingtons ammunition has to give the best performance in every gun on the planet, they will use a powder that has a slower burn rate and better case fill for a margin of safety.
Unfortunately for you, you have a few unburnt kernels left in your barrel..... a great trade off IMO.
Remington has got the right powder in there for the job, trust me.