Not MD by a long shot. Can’t match his experience, or knowledge, either.
Nothing wrong with H4895. Used it for several years to reduce recoil for my buddies sons and their friends. Finding a load that hits your criteria would be dead easy. Accuracy , in ever rifle we tried, was plenty good enough for a couple of hundred yards. If you’re reducing loads you’re not looking for a long range wonder anyway. We also did some with IMR 3031 and they worked out well. Don’t recall the loads and he has the notes.
If you want variety poke around a bit. Between powder companies , and bullet manufacturers, I found many loads that meet your criteria. Several IMR powders will do it.
As far as using 300 Savage data it may not work out all that well. There is quite a difference in case size. Pressures would be considerably lower in the 308 than the same load in the 300 Savage. Powders can do funny things when running at too low a pressure. Extreme velocity spread, poor accuracy, and burning dirtier than normal etc.
