I had a customer recently with a shot out Rem 700vs.308.he was like a cat on hot bricks over this rifle.so i fitted him a Pacnor 1-10T barrel.i sent him a video of it in the lathe after chambering with the interapid showing a couple of tenths..if that,run out from throat to the back of the chamber. .i do this all the time these days just to prove everything is correct and everyone is happy.rifle comes back from proof house a few weeks later,customer comes to collect it,still like a cat on hot bricks.i explain barrel break in procedure,bore guide.e.t.c and tell him to scrap his current home loads and start with new lapua brass and refer to a good reloading manual.he told me no need he knows about reloading.mmm,ok.one week later my friend Mike at Calton moor ranges rings me.had a guy here today in the tunnels with a Rem 700 308.new pacnor barrel e.t.c.wrestling with it and like a cat on hot bricks.does no barrel break in when he cleaned it after 30ish rounds he's got solvent running in and out of the action and muzzle like a river.hard bolt closure and tedding bullets everywhere.on inspection of his fired cases,cratered primers,some of them blown.old remington brass split necks.split necks on loaded rounds.his FL die was so full of crud doesn't no how a case sized in it..this guy told me he new about reloading!.he tells Mike he's going have to return the rifle to me it's not right.Mike points out to this guy everything he's doing wrong.including serious safety issues.Mike cleans the rifle properly goes into the shop gets a box of Remington factory ammo,sets the rifle up on the bench and proceeds to fire.after 5 shots he explains to the guy there's no hard bolt closure or extraction and shows him the fired cases,primers and everything is fine.he then points at the 5shot group on the TV screen.a slightly enlarged one hole.the guy stands there scratching is head and isn't like the cat on hot bricks no more.