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View thread Contact supportThat powder load + that velocity + what looks like a little injector swipe or imprint on the back of the case suggests you're at the upper pressure limit. The primer isn't particularly flat and the crater might in part go along with being at that upper pressure limit. Crater's in the primer like that are not a sure sign of pressure as often such a crater is a result of excess space between the firing pin and the bolt's firing pin hole.Need some input on my primers condition. I'm shooting 6.5 CM 143 grain ELDX with 42.2 grain Staball 6.5. Primer is CCI BR4.
Ruger Precission RifleWhat rifle? As noted above the excessive space in the tolerance of the firing pin and hole can be an issue. Savage and AI large firing pins are ones I’ve had issues with
Yeah not going higher on this brass.Probably at the limit there, however Federal cases don’t hold pressure very well.
I am using BR4I checked speed on a buddy's 6.5 Ruger precision rifle with factory Hornady 143 & it was 2650-2660. Had 500-600 rounds on the barrel when checked. These are hammer forged barrels that seem to be on the slow side.
So your beating the factory load by 85 fps with a powder I wouldn't consider to be the best speed powder in a Creed. I'd say your pushing top end of pressure. Firing pin diameter looks big so I'd stick to thicker cup primers like BR4, GM205AR, cci 450, cci 41.
Yes sorry i worded that wrong i didnt mean false as much as i ment, the pressure is because of the jam not so much the powder charge.Jamming bullets causes pressure to spike. The signs of pressure from jamming bullets are not false.