Mick, congratulations on your rifle & Type B Mauser in very good condition - very happy you'll be I bet to say the least!
The 7x57 is a grand old cartridge, it has taken a lot of game; from the very small to the very large!
I haven't used factory ammunition for rifles for many a year, except for my old 410 H&R.
But I do use the 140gn Noslers in my old Parker Hale, certainly dispatches pigs & deer with gusto.
My loads are not on the hot side, about 2700fps out of a 22" barrel.
I did recover the projectile it was perfectly mushroomed, the shot on the deer (Javan Rusa) was at about 50 yards; quartering shot just behind right front shoulder & ended up just under the skin in front of left hind leg.
So a white tail deer is in very serious trouble mate if it pops into your sights!