Re: Please help me decide
+1 on the "other" and what TimberWolf says.
IMHO anything with a 2.5 scope would be at the bottom of my list.
Enfield No4 with a No32 will give you x3.5, a ten round detachable magazine and a cheekpiece.
Mauser 98k with a ZF39 will give you x4 but no windage adjustment on the tube (or x6 and x8 if you can find one and they are CMP legal?). Plus, depending on the mount option you choose, the Mauser is more of a jaw/chin weld...so possibly not the best option for consistency until you are used to it.
Mosin with a PU, PE or PEM will give you x4
But if you want to stay "US" - a 1903 with a Unertl x8 would be my choice...just remember to return to battery if not using the recoil spring
But the old Zeiss and PE/PEM will give you better clarity.
Repros of all these scopes are pretty easy to find.
No surprise if I say I'd suggest a project rather than an "off the peg", just based on what I've seen and read about some of the commercial repros/replicas. You get to choose the rifle and components rather than take what somebody has sourced based on an end-user price point and profit margin calculation.
Edited....I'd even think about a Swede M41B if it is allowed (non-combatant nation?)...find myself already looking at this even though my Mosin M39 project is barely off the ground!!