CTDolan
AH elite
As a general rule of thumb, with common NE calibers, SxS rifle barrels are set to converge 0.003"-0.005" per inch of barrel length. This is the starting point and the degree of convergence which should be in place whether doing up a monoblock, a chopper lump, or any other joining system. Regulation is then a matter of making very minor adjustments, not bending the tubes.