If thats the case (breech plug and 209 ignition), why not Barnes TMZ's (ballistic tipped pills with sabots included) in various diameters and 100 grains of Western 209 or IMR White Hots.
I must be missing something because I don't comprehend why you'd play with different powders (and burn rates) when there is a very accurate off the shelf combination.
The only 'fly in the ointment' I see is the breech plug must be a recessed (read counterbored) plug so the 209 is sequestered in the cavity of the plug itself to insure a complete burn.
Maybe I am missing something or maybe I need to go buy a Savage and play with it. I have numerous Savages in centerfire calibers. I just never considered a Savage as a viable off the shelf 'front stuffer' (I like that term btw) when the Bergara barreled CVA was available, not to say that mine and (my associates) isn't modified. I modified both rifles prior to ever firing them in the interest of breech face erosion from primer wash.
The only reason my shooting associate is using The PR's is because of the restriction on plastic sabots in some western states. Otherwise, he'd be launching the Barnes as well.
More curious than anything I guess.
separate statement you admit to "missing something" and "don't comprehend" so maybe you have a longer curve than you think?