Headspace question.

[jmoore]

Ummm, GBinSC stated as did Brian Dick that his headspace is fine. Sooo, how much RADIAL EXPANSION is tolerable given worst "case" scenario using non-embrittled (relatively new, let's say) virgin brass cases or non-reloaded ammo?

I'm thinking that the degree of thinning could, possibly, be less, but I'm open to some computer modeling or actual hard data.

Oiling the case won't affect radial expansion, so leave that bit out!

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[Edward Horton]

Ummm, GBinSC stated as did Brian Dick that his headspace is fine. Sooo, how much RADIAL EXPANSION is tolerable given worst "case" scenario using non-embrittled (relatively new, let's say) virgin brass cases or non-reloaded ammo?

I'm thinking that the degree of thinning could, possibly, be less, but I'm open to some computer modeling or actual hard data.

Oiling the case won't affect radial expansion, so leave that bit out!

Mr. jmoore

Oiling the case WILL affect radial expansion, especially when the case can't grip the chamber walls, so lets leave this part in



And here is your "RADIAL EXPANSION of cartridge cases" and all the math and graphs you could possibly want.

Ballistics: Theory and Design of ... - Google Books

I even found this graph for you on cartridge pressure ring diameter, but this won't help much because Brian Dick already said GBinSC Enfield is safe to shoot.