Anyone else have any experience with feeding soft point hunting bullets (Hornady spire points) in their AR variant? My DPMS LR 6.5 Creedmoor works great with 140gr plastic tipped bullets but gives me all kinds of trouble with soft points. It seems like the tips snag on the feed ramp and cause a jam. When they do feed, the brass gets gouged and the rifle ends up short stroking. Is this just me?

Check the feed ramps for lead build up. Yes, sometimes AR's are finicky with exposed lead tip bullets.

Never ran lead tipped in the AR, BUT like anything else with feed ramps, often the weapons are much better if you sand/file/debur, polish the hell out of the ramps until they are very slick. Just like a 1911.

That would be where I'd start anyway

You haven't ended up with an M4 cut upper and a non-M4 cut barrel extension have you?

is it a new gun? How many rounds do you have thru it?

Yeah wow that wuold suck but I doin't think much of anything would feed in that?

It is a factory rifle. I bought it new and have about 120 rounds through it. It runs great on 140 Amax factory and hand-loaded ammunition but it short strokes on 120gr Amax factory ammo. I've talked to DPMS and they're willing to take a look at it. I have no doubt they'll make it right, as they have a good reputation for customer service.
I have also hand-loaded various weights of soft point ammo, including 140gr and it just won't run them. I'm trying to figure out if it's reasonable of me to expect it to run on soft points before I ask DPMS about it. Using hand-loaded ammo actually voids the warranty on the rifle and there is no soft point ammo available commercially.
BTW, this is a .308 platform rifle, not an AR-15.