I found this Noveske offered for sale:
21" 7.62mm Fluted Stainless Barrel w/ Gas Block & Gas Tube
--1 in 10" twist polygonal rifling
--7.62 Noveske Match Mod 1 chamber
--Extended feed ramps
--Bead blasted finish
--Rifle 7.62 length gas system
--Pinned Low Profile Gas Block, .875"
Does the polygonal rifling offer anything besides less bullet deformation by the grooves of traditional rifling?
Most polygonal bores are hammer-forged, but I've not heard of a SS barrel being hammer forged, so I assume this is button rifled?
Accuracy lifespan of polygonal bores in general, and Noveske SS in particular?
Finally, the shop wants a lot for this 'prize'. Like, 800 clams! Is this fluted Noveske a rare bear???