If you can believe RW
Still, if this was a few years ago, personally I’d find the lack of smokeless capability in the 10ML-BP more of a negative than I do today. The difference is the introduction of a new class of blackpowder substitutes from Western Powders: Blackhorn 209. In fact, it was a factory Savage 10ML-II barrel that was used for load development of Blackhorn 209. The only consideration with Blackhorn 209 is that it needs an efficient breechplug system for perfect ignition, as you quickly realize from the name of the propellant. As the Savage 10ML has the most efficient breechplug and sealed action on the market, Blackhorn 209 and this rifle are a great match.
The Savage came out 4-6 years before BH209 BTW. Savage offered a "BP only" version the same year BH209 came out IIRC too. They were the first to have BH209 in the load data also. Just pull up the MLII-BP pdf file on the Savage website. Ive never seen it listed in any other companies load data but i haven't seen all of them.
Why in a Savage?...because BH209 is basically a smokeless powder and no other ML barrel was tested to over 100k psi. Every Savage barrel is test fired and tested so it makes perfect sense for safety reasons.