I know we have different rifles but I experienced what sounds like the same thing with my new AAC-SD .308. I bought it in early November, actually went to buy it Election Day, but had to come back the next day bec. that tuesday at least in NJ there was no NICS.
I immediately noticed that it had some real trouble chambering rounds. The AAC-SD is a "BDL" level rifle with a Hogue OverMolded pillar-bedded [the lower ranking one] stock with a hinged floor plate and spring/follower magazine. I asked for help on a few forums, The Firing Line was extremely concerned, they were saying I was having really serious issues that were indicitve of a major problem , perhaps different chamber/barrel/entirely wrong build etc. I didn't like that answer so I sort of ignored it. I did a lot more research and found a ton of AAC-SD owners were finding problems with their rifles chambering too. Most suggested they needed to adjust or replace the hinged floor plate and magazine assembly. Bend the spring, redo the spring, buy a new spring, possibly a new follower, do some sanding, polishing, etc. {The Firing Line suggested lapping etc. and then other people strenuously objected to lapping, some strenuously objected to their objections, etc.}
I contacted Remington, they said they would open a repair ticket and send it back in. I said, why can't you just send me a replacement spring/follower/floorplate, and if that doesn't work, THEN I will send it in. Nope. I said, no really, I am telling you that is what I want and would feel much more comfortable because if you are telling me you potentially sold me a completely wrong built rifle in need of major repair out of the box, I don't want it, and I don't want your repairs, I want my money back or a new rifle in new box. Literally, no answer. I decided then my quest for a new stock had to include a new bottom metal assembly and detachable magazines. Basically I needed a chassis.
Wound up making the smartest decision on Firearms I have made since buying two Aimpoint Micro R-1s during the 2010 post-Christmas crazy sale @ Midway. I bought me a Manners MCS T5A DBM w/ Badger Ordnance Mini Chassis. It came with one 5 round Accurate magazine [rather than AICS because of shortages].
But I still have a bit of chambering difficulty. Better than before but not what I would like it nor think it ought to be. The thing is, I have not had a lot of time to get to the range and really put a lot of rounds through the rifle so it might open it self up when it gets some shooting done. Also I think the Accurate magazine might need to break in itself, seemed a little tight. I believe its better now than it was in the Hogue/BDL configuration but its not perfect. I also spent most of my avail dough on the MCS T5A so I haven't bought any spare, AICS magazines [which I will] and as we all know magazine itself could be the issue, just not perfectly feeding.
The thing is, I am sorry for the long post, I wanted to give you as much info so you might compare your situation. I know the VTR is different but we both have rifles coming off mostly the same assembly line, and I am thinking there is some reason for all these rifles having the same problem {I found a LOT of people describing the same thing as me, and especially a lot of the AAC-SD new owners.} I was told when Freedom Group bought Remington, they instituted batch testing instead of individual rifle testing, so if say one guy is screwing up or someone is skipping a step during builds or a part is not getting put in/put in right, a large amount of rifles will be released like that until a batch of the broken ones gets caught and they put two and two together. Bushmaster had a serious issue of this kind. So anyway keep me in mind so we can compare notes.
