I have direct expreicne with 3 of the rifles mentioned in previous posts:
GAP 10:
@MitchK mentions the GAP 10. That is the rifle that actually made me pick up an AR-10 in .308. A shooting buddy of mine bought one in late 2015. It shot sub MOA out to 600 very consistently and easy shot 1/2 MOA at 100 for 5-shot groups. Great quality and really a joy to shoot.
LMT: After shooting the GAP 10 and a lot of research, I picked up a LMT MWS 308 with the 20" stainless steel barrel. While the LMT is a heavier rifle, it shot just as well as the GAP 10. The LMT has a proprietary gas block making it difficult to suppress and control the gas. There are ways to improve the situation with a heavier buffer and stiffer buffer spring but, that carries its own set of issues. Ultimately I purchased a second bolt carrier and put an adjustable gas key in it. That seems to work fine both suppressed and un-suppressed with a normal weight buffer and spring.
LaRue PredatOBR: Mine was delivered in mid 2016--not sure you'd call that a recent one... I bought both the 20" and the 18" barrel. Both shoot okay--in the .75 to .90 range at 100 yards. Nothing to get excited about. Both of mine have the "XTRAXN" chamber and as
@bigjake83 says, it is almost impossible to reload. You can get one reload out of the brass but risk sticking the case in the die with subsequent reloads. I had custom Forster dies built and tried several dies that you would think might work including Dillon, Forster, Redding, RCBS and Lee. There are some early PredatOBRs and OBRs that both shoot in the .5 MOA range and do NOT have the XTRAXN chamber. Wish I had one of those... This rifle has a purpose and is a quality weapon but, for my use case, is over priced for the way it actually performs. As as side note I had a few phone conversations with LaRue about reloading for the rifle. Officially, shooting hand loads voids the warranty and they will not support you regarding reloading. Unofficially they acknowledge re loading is problematic for 'some' people.
I realize that not everyone wants to build their own AR-10/SR25 but there are some great components out there and you could easily get a premium barrel, pair it with quality upper and lower parts and drop in a great trigger and end up with a great shooter. If I were looking to buy an accurate SR25 pattern rifle today, that is the path I would take.
Lots of good options today. Have fun with your choice...
Henryrifle