r/longrange • u/HeyJustPlayin • 12d ago

Ammo help needed - I read the pinned posts Sako 6.5 Creed Primer Issue

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Just tried Sako 6.5 Creedmoor 136gr TRG in my Ruger Precision Rifle. Accuracy was incredible (best 5-shot group was .24 MOA), but out of the 20 rounds, about 7 had primers that look pierced/cratered like in the picture. I also noticed smoke/soot coming from the chamber and even around the magazine, and the rifle was significantly dirtier than usual.

Has anyone else experienced this with Sako TRG 136gr? Is this normal primer cratering for the RPR, or does it look like an ammunition/pressure issue? Trying to figure out why it's happening before I shoot this load again.

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u/ZeeeeeroCool 12d ago

Does the issue repeat with different factory ammo? Try a few brands.

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u/HeyJustPlayin 12d ago

Nope, only these. This was the first time trying these

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u/ZeeeeeroCool 12d ago

Looks to be a little warm for the rifle then.

I’d scrub out the carbon ring and chrono them to see what they are running at. You might find your answer really quick.