05-22-2023, 09:43 PM
(This post was last modified: 05-22-2023, 09:46 PM by lazyengineer.)
JMHO, but as long as you stay away from the goofy demensions spec's of 10 years ago, it's mostly a non-item. the days of a hand crafted bolt and a barrel's headspace being a variable demension based on how well it's screwed into the machine shop made and threaded receiver, are long gone. Basically today, any commercial bolt and any commercial barrel is going to work togother, if they were made right. and it's rare for them not to be made right. That, and headspace handwringing is a bit over played. Biggest issue really is too short of HS, where the gun doesn't reliably close. And in an AR15, that's more annoying than it is dangerious (It's quite dangerous in an M1 or M14 where the firing pin can still hit the primer even when not closed; unlike AR15). It takes a very very very long headspace to break shells, unless you are reloading. And even then, it doesn't actually Kaboom, the shell just breaks in half, and the bottom half holds the seal. And the gun jams.
Point being - just buy a modern barrel and a modern bolt, and you'll be fine. I will say, for bolt, the ones here at 65 outfiters are where I suggest you start, personally.
Just MHO. If anyone hwere longer than me says different, give their post more weight than mine - but that's been my own experience with the AR platform both .223 and 6.5 Grendel
Point being - just buy a modern barrel and a modern bolt, and you'll be fine. I will say, for bolt, the ones here at 65 outfiters are where I suggest you start, personally.
Just MHO. If anyone hwere longer than me says different, give their post more weight than mine - but that's been my own experience with the AR platform both .223 and 6.5 Grendel
4x P100