BH209 will work fine with your ML10II In my Knight t-bolt 80grV of BH209 cronographs 1478 FPS out of a 22" barrel with my 330 gr. hard cast. this load will work on anything on this continent with real authority. Verel Smith of LBT recommends for max killing effect 1500 MV This load also shots very flat. sighted dead on at 75 yards is 1 inch high at 100 and about an inch low at 125 yards. 3" low at 150. Still well within the vitals of most game with a dead on hold out to 150.

I would try the .430 280s with the Green sabots but you may have much better accuracy with the .452/.451 330s in the short black or supplied long black sabot. As posted earlier I cast my own. We shoot this bullet in many Muzzle loaders, 3 savage ML10II, 1 ML10 and I have a my own custom built Remington Rolling Block with a 26" stainless 50 cal barrel that I built expressly for smokeless powder, the original substitute for Black powder.

Other friends and family shot them in all kinds of inlines. I recommend a load equivalent to 80 GrV of BH209 or Less. Even a 1200 FPS load will kill quickly and you will be able to eat right up to the Boolit hole.

I will be hunting this year with the Roller, and will be shooting a load that consists of a very light charge, 30Gr of SR4759, this gives me a muzzle Velocity measured 10' from the muzzle of just 1500 FPS. the recoil isn't real bad and it shoots just like the load of 80grV BH209. I say light load because the Ssavage manual list the recommended loads of 39gr to 44 gr I believe.

The barrel on your Savage is measured from the bolt face to the end, I don't think there is a single gun manufacturer that measures from the Breech plug to the muzzle. All center fire rifles are measured and listed from the bolt face to the end of the barrel.

90 grV of BH209 read 1650 out of my T-Bolt, 105 Gr clocks 1778 same gun, these are all with the 330 gr Hard cast and a HSB sabot.

The Metplat of the Hard cast is the secret, not really a secret in the world of Cast Boolitz, but is foreign and not understood by shooters of Condom wrapped bullets.

You will find that shooting 60 to 90 GrV of BH209 your Savage vent liner will last almost forever.

My advice, try the 280s but it is well know that the thinner the sabot the better the accuracy. I would shoot for at least 35 pounds of ramrod pressure to push the boolitz and sabot down the barrel. if your 280s are less roll them against a file to Knurl them up to a larger diameter to give you the needed load resistance.

Happy shooting, By the way if you were to spill; BH209 and SR 4759 on the same surface you would be hard pressed to tell the difference. just a thought.

Long live the Hand cast Boolitz!