Weird case stretch? Whats the cause of this?

[Carl N. Brown]

Well, the groove is in the unfired Barnaul brand brass-plated steel-cased ammo, obviously. I donno unless it was put there to warn reloaders these are not brass casings.

 

[LoonWulf]

I could understand that with the brass plated ammo...buy why continue it with the MFS (if i remember my limited research suggested silver bear?) ammo that is obviously steel?....or is it possible that steel cases are purchased in bulk with that ring, and then some end up brass plated?

 

[R.W.Dale]

Plating is the very last step in the case making process. If its going to have that ring its going to have it before whatever final finish is used.

I've not seen steel cased 30/06 without it.

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[LoonWulf]

ok that makes sense.

 

[Sport45]

Since steel doesn't stretch as much as brass the ring allows enough flex to prevent head separation in rifles with excessive headspace.

At least that's what I get from reading the explanation on Midway's site.

http://www.midwayusa.com/product/55...+Rifle+-+Blasting-_-PriceCompListing-_-558507

Notes:
•Since this ammunition is loaded with steel cases, the ring on the base of each piece of brass allows the case to expand upon firing. Since steel does not fire form like brass, this extra ring helps prevent the case from breaking into two pieces during firing.

 

[R.W.Dale]

Granted 30-06 is much longer but steel cases most definitely can fireform. I shot a bunch of em through my 30ppc largo wildcat.



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[Hocka Louis]

Wow, so, those first three "obvious" headspace failure answers that left me doubting myself and questioning what they were looking at and how they came to their conclusions were just so much hooey!

 

[R.W.Dale]

Wow, so, those first three "obvious" headspace failure answers that left me questioning myself and what they were looking at was just so much hooey -- I'm glad to know where it came from frankly.

I wouldn't go that far as to say that. I could see how someone not knowing that useless tidbit of steel cased trivia I had floating about in my brain would come to the only conclusion their experience would lead them to.

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