7 prc 180 ELDM Bullet tumbling

[RiverRatMatt]

Sighting in my bergara mg lite in 7 prc this weekend and ran into what I believe is an issue. If you zoom into the top impact you can see the lead in the hole. The bottom right impact doesn’t look clean either. This happened after around 15 shots and doesn’t seem right considering the paper was stapled to cardboard.

Curious to what caused this and how can it be prevented.

 

[eoperator]

Is your bergara one of the smooth bore models?

 

[swavescatter]

Do you have access to another magnum rifle that shoots sub-MOA? Put together some "proof" that you can actually shoot before contacting Bergarbage customer support, otherwise they'll just accuse you of sucking and refuse to honor their BS sub-MOA guarantee. That's what they did to me.

Don't waste more ammo chasing your tail here - if bullets are tumbling I don't think that's a simple fix like checking action screws, muzzle devices for tightness, etc.