Received reply for Chris Petersen from PTR today. Here is the response:
Hi Ham,
Thanks for getting in touch with us.
I'm thinking that the issue lies with either the gun still being tight as it's still new, or something to do with the flutes being a tad dirty and choking off gas flow.
You didn't mention if this issue has occurred since you took it our of the box, or if it popped up at some point during your shooting. The first thing I would recommend is breaking the gun down and giving it a thorough cleaning. When cleaning the barrel please use a 30 cal. brush. When cleaning the chamber, please use a 45 cal. brass brush on a cleaning rod, and go through the rear of the receiver to access the chamber. Please do 5-10 passes in each area with the appropriate brush. Next, please swab both areas out with cotton patches until they come out clean and dry. Once both areas are clean and dry, please leave them dry. Finish cleaning the inside of the receiver, as well as the bolt group, and put a little bit of oil on the bolt head and carrier, then reassemble the rifle.
Once the rifle is reassemble, please try shooting it again with the specific magazine that your gun came with, and with FMJ rounds. If the problem hasn't sorted it self out through this cleaning procedure, please give me a call at 843.358.2222x312.
Best of luck to you and Happy Shooting!
Best Regards,
Chris Petersen
Customer Service Manager
PTR Industries
101 Cool Springs Dr. | Aynor, SC 29511
Tel: 843.358.2222 | Fax: 843.358.2223
Did all that he recommended. Heading out to the range. Will post results upon return.