Treat the 2-3/4" chambers as a Long Forcing Cone, and shoot 2-1/2" ammo in it.

Biggest question is : Is the gun worth the ask to YOU?

Good Luck

Regards

GKT

Texas Declaration of Independence 1836 -The Indictment against the dictatorship, Para.16:"It has demanded us to deliver up our arms, which are essential to our defence, the rightful property of freemen, and formidable only to tyrannical governments."