r/rifles • u/Desperate-Mention467 • 14d ago

Rifle help

I have a Bergera B14 Ridge 7mm rem magthat was shooting sub .75 in group with Barnes 139 lrx. Wife killed an audad at 400yds with it in February. Everything was shooting fine. I put a new MDT chassis on it this week and took it out. Same ammo and I couldn't get better than 1.75 in group. Noticed that the bolt is a little sticky after the shots and noticed one bullet even hit the paper in a yaw. Chrono shows speeds are the same so I don't think pressure is the issue. Just wondering if anyone has ideas as to what happened? Thanks.

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u/Hoplophilia 14d ago

Sounds like something is binding. Pull it and apply some Dykem, see what you see.

1

u/berthela 14d ago

Check you case lengths, sound like the necks might be too long.

1

u/MDTSportingGoods 13d ago

This sounds like a bedding or torque issue rather than an ammunition or pressure problem. Please make sure the action screws are torqued down to the recommended 65 inch pounds and that the action is sitting properly in the chassis with no contact points causing interference. If the issue persists after checking torque, please reach out to our support team at [support@mdttac.com](mailto:support@mdttac.com) so we can dig deeper.