Originally Posted by
lsllc
This does not make any sense at all.
A rifle barrel can be both hand-lapped and button rifled. I fail to see the difference here. Lapping is a process done to a barrel to eliminate machining marks; smithing out tough places in the bore.
Hand-lapped barrels tend to shred less copper and oftentimes clean with fewer passes when new, but factory standard barrels break in with time. Premium barrels or aftermarket match-grade barrels tend to be hand-lapped.
ETA:
The rifling types we most common see are button-rifled, cut-rifled, and hammer-forged.
Most barrels in the precision rifle community tend to be button rifled (think Shilen, Lilja, Douglas, Schneider, Hart, etc) or cut-rifled (Kreiger, Bartlein, etc)
Rarely do we see hammer-forged except factory rifles like Tikka, Ruger, etc.
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