Hard to say RB. Snow is dry and powder this year so they will go in deeper.
Usually the 500 gr+ .44's and .45's cartridge bullet will go in around 8' this year I shot some .45 513 gr and a 21 foot drift did not stop them.
But I will put a stake in the pile where it went in just for curiosity and look for them when the snow if it ever melts this year.
That rifle was built by Steve Losey. This steel mounted rifle to resemble the ones that J. Henry was building for trade with the American Fur Company it has a 44" rice swamped barrel in 54 cal.
I like the plain steel mounted rifles and when I saw this one it just followed me home

It's a fine shooter with a good follow through when I set it off.
Kurt