Dave.I have one built on a Rem 700 with a 27" Douglas barrel.The load I use now is 80gr of H1000 and a Fed 215m primer under a 162gr A-MAX at 3113fps.I've shot it to out over 1200 yard's and I am very pleased with it.I probably wont use this gun out past 7 or 800 yard's.But I think it will work farther out.
I have a 7mm STW, 34 in Lilja barrel. I have managed to push a 180 gr Berger at 3100 with greta results. 74.5 grs of H50BMG bullet seated to the lands. No pressure signs, going to a faster buring powder next up on the list.
I have a 26" Hart bbl w/10 twist on my blue printed Rem 700 action. Was regularely shooting in .3" or so with 83.5 H1000 under a Hornady 139gr SST or Nosler 140 B-Tip and a Fed 215M primer.
Yesterday I fired a .35" at 200yds with the SST and a heavy charge of RE25. All bullets are loaded .006" into the rifling.
Mine is a 26.5" Pac-Nor bbl w/Vais muzzle brake on a SS 700 action in HS Precision stock.Optics are just a 3X9 Leupold(suprisingly does good). I'm pushing 150gr NoslerBTs at 3400fps with RL25 and Fed 215s. I shoot the 150partitions also out to 500yds.