Which reminds me - about a week ago I had a customer send a BACO M70 to me for some work.. Upon inspection (this was a brand-new rifle right outta the box) I happened to notice what appeared to be a gap between barrel and receiver.. A .002 feeler gauge confirmed it; the tip penetrated that gap by about .020-.025 before it stopped.. I.e., either the receiver or the shank's shoulder was not machined correctly. ... WTH??? As to the BACOs, I'm totally underwhelmed...
Will the gap cause the rifle to have accuracy problems??
That's hard to say - it just really surprised me since these have been touted to be the best thing since sliced bread.. All I can say is that I always machine a new face on the receiver before the barrel's installed. I start the cutter at the inside and retract the cross slide towards the outside.. That leaves a perfectly perpendicular surface to the axis of the action.
The barrel's shoulder cut is done the same way to ensure those two surfaces squarely meet.
There's many ways to skin that cat, but that's how I've done it for more than two decades and to date it's worked well.
