Ok, so here's the story.
Bought a brand new model 111 in 7mmMag
Ordered a McGowan barrel through northland shooters supply.
Took the gun and barrel to a smith today to have the barrel installed an free floated.
Smith says 1) he doesn't know how he is going to get the old barrel off because the locking nut is smooth. He says the old ones had grooves or notches for a wrench and mine doesn't.
2) he says that the barrel (new one) is .0060" bigger than the factory barrel where it comes out from the locking nut. Therefore he says he doesn't think it will fit even if he can get the barrel off.

What gives??? How do you get the factory barrel off with nothing to grip?
Has McGowan sent me a barrel of incorrect size??

Surely someone on here can help me out. If need be, I can try to post a pic of my gun if this helps.
Thanks in advance for the help.