Are these rounds over pressure?

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rkm456

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Okay, I apologize in advance that these are factory loads. Not reloads, home made, factory or other wise. My gun shoots them well, but I had a primer fall out of one of the spent cases while I was at the range so I got to thinking "are these loaded too hot?" I thought this was the best resource I could think of so I ask you fine folks. Do these primers show signs of being over pressure? The gun in question if a Savage Long Range Hunter. Thanks for any help you can offer.

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Out of curiosity. What are the odds of it being an issue with the gun rather than an issue with the ammo? Seems unlikely to me but it is a brand new gun and factory ammo and I suppose it could be a chamber issue.
 
kawicrash said:
The two on the right defiantly look like they were pretty hot. Don't suppose you got to chronograph all of them??
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Didn't chrono any of them. It didn't occur to me that I'd have any issues with a new gun and factory ammo. I'm wondering if maybe I left some oil in the cabel when I was initially cleaning it and caused the chamber to be tighter than it should have been.
 
It would not tighten the chamber. It would reduce the friction of the chamber and thus the face of the bolt sees more pressure.

Should have no oil in the chamber. Always wipe clean before shooting.
 
rkm456 said:
Didn't chrono any of them. It didn't occur to me that I'd have any issues with a new gun and factory ammo. I'm wondering if maybe I left some oil in the cabel when I was initially cleaning it and caused the chamber to be tighter than it should have been.
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I would agree with this primarily because primer flattening is a good indicator (not denying it) but not conclusive, and only what I assume are the first two shot have other marks to indicate an over pressure.

I know someone who had a Tikka that was machined so well and with such a tight chamber it had to be run almost completely dry of oil, zero water or grease anywhere in the gun (yes, chambers should be oil/grease/water free always). Maybe this rifle is like that one? I dunno.

A Chronograph would be needed, and if over pressure (shown by chronograph) factory ammo I bet Nosler would want a video of it and the ammo back before doing anything. Just my opinion though.
 
I'm thinking my next step is to make sure the chamber is bone dry and run a couple more through then reinspect/report back.
 
They don't look too hot other than the blown primer
Was the bolt hard to open?
That blown primer doesn't look indicative of the rest of the box
 
I suspect the chamber was coated with oil. I have seen this before. Clean and degrease chamber and try again before concluding the ammo was loaded to too high pressure.
 
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