There are several M95 for sale at a german dealers shop, some .405Win also.
Prices are HIGH, 2000 and up.

The Mosin action can be modified for many calibers, I saw a 30-06 Mosin with heavy barrel, built by a SAKO gunsmith for his own use.

But nowerdays gunsmithwork here is expensive, way cheaper to get some old rifles and restore them, if needed.

I hope that the hunting museum in Riihimäki will get bigger showrooms, so that they can display the rifels in storage now.
I was invited to teh storage rooms on my last visit this winter, VERY impressive!
All kind of hnting rifle conversions of older military guns.
Some real cuoriosiries, like a straightpull shotgun made from a SVT40!