If the actions are in decent to great shape, they are worth it in my opinion. I would do this with any 96 action from 1912 onward.

Lots can be done to the M96 action. It is a 57,000psi action to start, with standard .470" rim diameter & case size. It was chambered.

Just for a lark, I once rechambered a model 1935 M96 action for the 6.5x68S round.
I didn't run full powered loads, but did push 129gr. Hornadys at 3,200fps.

My factory m96 military 29" bl. helped a bit in obtaining that velocity with 5gr. less H870 than my buddy was using in his 24" bl. His rifle beat my rifle by 100fps only.

Due to it's action length, it would eject only fired cases. The bolt had to be pulled 'slightly' to extract unfired rounds.

If the factory barrels are in good shape, a 6.5x55 Arch or AI would make an impressive long range deer rifle, capable of taking elk and moose as well. Of course at closer ranges, the standard 6.5x55 will do that anyway.

Other chamberings than the 6.5x55's (55,000psi round) in these rifles included 7x58, 8x57 and 9.3x62, all 57,000PSI rounds.