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School me on primer sensitivity

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School me on primer sensitivity  Empty School me on primer sensitivity

Post by hengehold Tue Jan 16, 2024 1:49 pm

I have a gun (1911) that has an off-center primer strike and is not working well with some primers. Apparently some primers are easier to detonate (Federal) than others (such as CCI). 

Apparently this is also an issue for revolvers? 

Does anyone have a list of brands that are to be avoided as well as brands that are best To use with off center primer strikes?

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Post by PMcfall Tue Jan 16, 2024 2:21 pm

I don't know anything about off center, but I think Federal and Winchester are considered to be the softer primers.
Phil
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Post by BE Mike Tue Jan 16, 2024 3:40 pm

I've found that Servicio Adventuras primers from Argentina require an extra amount of umph when seating. There is a theory that having a primer strike slightly off center actually aids in ignition due to more primer compound being exposed to the primer anvil when struck by the firing pin or striker.
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School me on primer sensitivity  Empty Primer on Primers! It's lengthily but informative

Post by jjfitch Tue Jan 16, 2024 5:22 pm

hengehold wrote:I have a gun (1911) that has an off-center primer strike and is not working well with some primers. Apparently some primers are easier to detonate (Federal) than others (such as CCI). 

Apparently this is also an issue for revolvers? 

Does anyone have a list of brands that are to be avoided as well as brands that are best To use with off center primer strikes?

Google: "Primer Info & Chart + Milspec Primers for Semi-Autos & Other Primer Applications"


Last edited by jjfitch on Tue Jan 16, 2024 11:38 pm; edited 1 time in total
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Post by messenger Tue Jan 16, 2024 5:31 pm

My friend who built some of my guns told me that a 1911 that has off center primer strikes is due to improper barrel fitting. All my 1911's hit in the center. The only guns I have with light strikes are my revolvers. I do have a Sig 365 that doesn't like hard primers. I only shoot Federal primers in my revolvers.

Bill
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