I've done full blown customs a couple of times. Today I fired for the first time my most recent purchase, a CA Mesa (won't mention the caliber as I fear you might reach through my monitor and choke me...).

As set up ready to shoot it weighs a bit over 7 3/4 lb. After zeroing, the next 4 factory rounds produced a tight clover leaf shooting from a front pedestal and rear bag. Not too shabby.

Yea, consider the CA Mesa.

It's you and the bullet, and all the rest is secondary.