Hello,
I'm going to add the Gewehr 88. If you're willing to load for it or find the correct M88 7.92x57mm ammo, it's a really cool rifle to own.
It's my favorite after my pet Mosin, and very nearly equal. I am just much more familiar with the Mosin due to working with it all the time.
Please note that the M88 7.92x57mm round is the direct decedent of the modern 8x57mm round, and the latter will fit in the former's chamber. However, it is not safe to fire a modern 7.92x57jss (or iss if you prefer; 8x57mm or 8mm Mauser) in the Gew88. The pressure is too high, and the bullet is wrong if the Gew88 doesn't have the spitzer "s" conversion.
Regards,
Josh