300 WM brass

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TedNugent

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So, I bought some 300 win mag brass a couple months ago. They guy claimed the majority of it was once fired. I went through and resized a pile of it last night, and noticed something I found pretty peculiar. Brass that seemed to have the original primers(Brass coloured) had been crimped. Found a few brass with split necks, and quite a few were very, almost disturbingle easy to size with my FL sizer.
Any idea why someone would be crimping their bullets if they were factory loads? Not a lot of semi-auto 300 win mags out there are there? Are the ones that were too easily sized on their way out? I didn't notice any obvious head separation signs, just a curiousity I suppose.
Edit: Now that I think about it, I may have to measure neck thickness, am assuming those too easy to size could be a sign of excessive stretching, and therefore less material at the neck.
Aaron
 
Were they all fired from the dame gun? The easy to resize ones may have come from a different rifle, with a tighter chamber....
Are they all the same make / headstamp? some brass is softer than others, and that may explain the ease of resizing.

Stan
 
I won't buy "once fired brass"

Absolutely no way to tell.

Years ago when you could actually buy brass from the US I found some "Once fired brass" for my dad's 7x61 S&H.

8 out of 10 split the necks when shot.
 
Ya, I have no history on them. 90% of them were almost certainly 1x winchester. Looked like original primers, but the bullets had been crimped, which is what's throwing me off. Can you purchase factory look-a-like primers? All of the reloading primers I've ever seen/purchased were silver in colour. Ill have to take a look at my purchase history and possibly alter my feedback.
 
Ted The Win primers I have are all brass coloured. Haven't had any Win silver coloured ones in 7-8 years. Win seems to like crimping the bullets in factory ammo. Possibly to prevent problems in calibres with very short necks. 300 Win mag as well as the short mags come to mind. As for some cases resizing very easily. Not a problem. As already mentioned they were likely fired in a rifle with a tight chamber. Browning rifles often have chambers that are tight. They will fire-form to your chamber the first time you fire them.
 
Win and older remington primers are brass coloured. First thing I do with brass is check pockets with a primer to see if they are blown out. If primer almost seats with finger pressure than they likely shot more than once or they are federal brass which gets blown out with one firing from factory most times.
 
Ahh that explains a lot, have never used Win primers... Doh..
Thanks very much, will be keeping a close eye on the primer pockets, no telling how many times they were fired...
 
Pickles said:
I won't buy "once fired brass"

Absolutely no way to tell.

Years ago when you could actually buy brass from the US I found some "Once fired brass" for my dad's 7x61 S&H.

8 out of 10 split the necks when shot.
Click to expand...

Dudes, I need some advice now, after taking a look at what I was told was 'mostly' once fired brass with a 'few more than once' reloaded mixed in.
The guy who sold me this brass, is an experienced reloader, or has at least 5000 posts on this forum and has a 600+1 trader rating with NOT ONE
negative review. When I post pics up, I want to hear who all here thinks it was at least or could be considered improper, irresponsible and downright
wrong to sell me this POS pile of garbage brass and call it 'mostly once fired'.
I sent him a pm, and am going to wait to hear his explanation of why he shipped me mostly scrap brass before I change my trader rating, and marr his perfect record.
Here's a hint of what I'm talking about: Just how many firings of virgin winchester brass do you think it would take to double or triple the
size of the flash hole? Yes, its that bad..
 
TedNugent said:
Dudes, I need some advice now, after taking a look at what I was told was 'mostly' once fired brass with a 'few more than once' reloaded mixed in.
The guy who sold me this brass, is an experienced reloader, or has at least 5000 posts on this forum and has a 600+1 trader rating with NOT ONE
negative review. When I post pics up, I want to hear who all here thinks it was at least or could be considered improper, irresponsible and downright
wrong to sell me this POS pile of garbage brass and call it 'mostly once fired'.
I sent him a pm, and am going to wait to hear his explanation of why he shipped me mostly scrap brass before I change my trader rating, and marr his perfect record.
Here's a hint of what I'm talking about: Just how many firings of virgin winchester brass do you think it would take to double or triple the
size of the flash hole? Yes, its that bad..
Click to expand...

I've purchased new 300WM (Previ) that had pretty badly deformed belts. Is it any particular brand that has the large flash holes ? I've also seen xF pistol brass that had flash holes drilled to a larger size. Reloaders can be very artistic at times.
 
If I don't anneal I can split necks in 3-5 uses, but I anneal every second time, trim each time, neck size only and the current batch is probably in the 8-10 use range, I can't say any flash holes are abnormal what so ever, all the primer pockets are still snug enough, I feel each case internally with a 90*pick and cull the odd one each session.

I load fairly hot btw, 210 Bergers on 79.5gr h1000 at 3034fps from 24" barrel (over my chrono, yet to be verified via drop chart. Long story...)
 
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