OK, I've purchased some aftermarket barrels and it seems everyone claims their method of rifling is the best. I don't understand how the folks 'cutting' rifling can claim their methods produce the 'smoothest' bbls. I DO understand that cut bbls are usually lapped, so that may be the reason...? It would seem pulling a Carbide Button through the bbl would be the best method. Hammer forging seems to have a lot of benefits/drawbacks.......
I do understand that 'button' rifling may put some stress in the bbl as the button is pulled through.

The reason I bring this up is that I bought a new rifle Saturday. It is a .22 LR Marlin (gasp!). Bolt action, SS, tube magazine. It's not my only Marlin, but it's 'out of box' accuracy was pretty awesome. It has the "microgroove" bbl.
Marlin still makes some high power rifles with "microgroove" rifling...... Anyone have a 30-30 with a "microgroove" bbl?

ron