Received my PBB barrel about a month and a half ago. Still have not shot it because I'm waiting for my optic. Details on the rifle below, will provide updates hopefully soon on how it shoots.
Defiance Ruckus, 338 Lapua Magnum, .750" bolt dia
1:8 twist (supposedly fine for the 275gr monometal bullets that I will try sooner or later if I can source some N570)
26", .900" taperless, 5R, shouldered - I'm told my action was to be used to get the headspacing for Ruckus LA prefits and a new page would be brought up for these specific actions. Theoretically they'll also work for the anTi and Tenacity actions as those dimensions are claimed to be identical.
Relevant info, agnostic of barrel:
MCS DBM LA Mini Chassis, pre-bedded in a EH1A
TriggerTech Special
MBM Ti 5-port Beast
After break-in, I will be working up a load with Badlands Precision Super Bulldozer 240gr, with VVN560, Lapua brass, GM215M primers. Target MV is 3100 if I can get away with it without signs of pressure. Will seat .030" off the lands to start with, hoping the SBD's are not too sensitive to depth.
Barrel was confirmed to be correct twist, and borescoping showed the bore and rifling to be very good (opinion based, I know). I understand that it needs to shoot before I can make any judgement, but I'm
very happy with them from what I have experienced first-hand. They're doing great work.