6.5x55 gurus help plz

[6mm06guy]

Ok guys I have two old mauser I'm wanting to convert to 6.5x55, brownells has pre fit barrels that are 24" 1-9 twist. Will these barrels shoot 140gr pills? I also have a remington 700 I'm wanting to build in 6.5x55 for long range and I see that pac-nor offers a no throat barrel, has anyone had any experience with that chambering? Where do i get a reamer to match 140 gr bergers.