Brand new Daniel Defense Upper problems

[BadShot]

I'd run it back to Jensens, something is off kilter. DD makes a good upper but as with everything some times bad apples slip by.

[Hoser]

Did you clean the barrel yet? Sounds to me like the chamber might be a touch dirty.

The scuffs you see on the bullet are going to be there no matter what. The bullet has to go up the feed ramps.

[samurai_sam]

I went and picked up some Black Hills ammo and the rounds feed through perfectly. I guess its just picky on the ammo.

[Great-Kazoo]

IF you feel comfortable/mechanical enough lightly polish the chamber.
i have needed to do this to a few new bbls on different rifles and handguns when using a new bbl. tac solutions bbls also a new BM 11.5 out of the gate was required before running the different ammo i shoot.

[LIL-COMMANDO]

Is this upper a complete DD upper with Carrier Group? I ask because some companies advertise DD upper but when you look closely they are selling the DD barrel with a non brand upper and a non DD carrier group. I ask sice PK firearms sells a complete upper but when you read closely it only had a DD barrel in the group.

I am waiting for my complete DD upper from Aim's and for $499.00 Im anxious to shoot it. I also will be using a LMT LEO marked lower.

[BPTactical]

IF you feel comfortable/mechanical enough lightly polish the chamber.

Probably a chamber that is a smidge tight.
I would contact DD and see what they suggest. They built it, you bought it and I would try to get them to correct it.

If they dont want to do anything I would wait until I got a couple of hundred rounds down the pipe and if it was still giving you issues I would lightly lap the chamber (keeping the compound away from the neck/shoulder area).

[Hoser]

Is this upper a complete DD upper with Carrier Group?

You guys do realize this thread is over a year old...