Flattened primers acceptable pressure sign?

RidgeRebel

Well-Known Member
Joined
Feb 6, 2011
Messages
114
Hey fellas,

I know flat primers are a sign of pressure, but I was wondering if flat primers that are not cratered and have no leakage around them are acceptable. I am loading a 7mm Saum with ADG brass, Berger 180 hybrids, Hodgdon 4831sc, and Federal Gold Medal 210 primers. I worked up to a load of 60.7 grains that shoots one hole groups with an ES of 11 FPS for five rounds. I am super happy about the performance, but the primers are pretty flat and I am a little concerned I may be pushing it too hot. I am right at 2855 - 2866 fps which also right what I was shooting for. So my question is: safe to run? or find a lower node?
Thanks

Bob
 

FEENIX

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LRH Team Member
Joined
Dec 20, 2008
Messages
17,692
Location
Great Falls, MT
Hey fellas,

I know flat primers are a sign of pressure, but I was wondering if flat primers that are not cratered and have no leakage around them are acceptable. I am loading a 7mm Saum with ADG brass, Berger 180 hybrids, Hodgdon 4831sc, and Federal Gold Medal 210 primers. I worked up to a load of 60.7 grains that shoots one hole groups with an ES of 11 FPS for five rounds. I am super happy about the performance, but the primers are pretty flat and I am a little concerned I may be pushing it too hot. I am right at 2855 - 2866 fps which also right what I was shooting for. So my question is: safe to run? or find a lower node?
Thanks

Bob
"I" do not like any pressure signs on any of my load.
 

338 dude

Well-Known Member
LRH Team Member
Joined
Mar 1, 2016
Messages
3,291
Location
Tn
Hey fellas,

I know flat primers are a sign of pressure, but I was wondering if flat primers that are not cratered and have no leakage around them are acceptable. I am loading a 7mm Saum with ADG brass, Berger 180 hybrids, Hodgdon 4831sc, and Federal Gold Medal 210 primers. I worked up to a load of 60.7 grains that shoots one hole groups with an ES of 11 FPS for five rounds. I am super happy about the performance, but the primers are pretty flat and I am a little concerned I may be pushing it too hot. I am right at 2855 - 2866 fps which also right what I was shooting for. So my question is: safe to run? or find a lower node?
Thanks

Bob
Pics?
 

RidgeRebel

Well-Known Member
Joined
Feb 6, 2011
Messages
114
20210906_122723.jpg
 

RidgeRebel

Well-Known Member
Joined
Feb 6, 2011
Messages
114
I seem to get the ejector swipe no matter what even on light loads. The action is a Tikka. I do see the faint ejector mark now though and have not seen that when the brass was virgin. I was shooting a standard VLD before that were seated slightly longer with a similar load. I agree that I need to go to a lower node. I think I knew that before I asked but the load was so perfect I was hoping I was just being paranoid.
 
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