Someone had a bad day...

[AIAW]

Found this laying in the dirt next to my firing position today at the range. Check out that brass flow into the ejector port... Good God! Pressure and headspace much?

Obviously it’s slightly weathered, so it must have been over the summer perhaps. That couldn’t have turned out well. Even the extractor groove is visible to the left across "WIN" (ironically). The primer pocket also got "crimped".

The rim and belt have a weird wave to them also.

 

[Aries256]

Found this laying in the dirt next to my firing position today at the range. Check out that brass flow into the ejector port... Good God! Pressure and headspace much?

Obviously it’s slightly weathered, so it must have been over the summer perhaps. That couldn’t have turned out well. Even the extractor groove is visible to the left across "WIN" (ironically). The primer pocket also got "crimped".

The rim and belt have a weird wave to them also.

View attachment 7193344

Yikes good grief depending must’ve crunched powder on that one? holy shit! ?

 

[XLR308]

I'd have to say the ladder is complete, upper pressure limit found.
I allways wondered what a case full of H4198 and a 180 grain Barnes TSX would do in a 300wm .

 

[nn8734]

Here is a recording of The case head separation event that left that brass

Wonder if he was able to patch it back up...

 

[Kyskeet]

Blood trail leading away from the firing line?

 

[MtnCreek]

Only one jug of powder out at a time. It's a good rule.

 

[ChadL]

I believe the reloading session went something like this....”dude, you should try using pistol powder”

 

[AIAW]

To do that it had to be something stupid... like slam-full of Benchmark, RL5 or something along those lines. Definitely not the right powder - not even close.

 

[DarnYankeeUSMC]

Went to the range with a friend who just bought a new 300 Win Mag. He brought several different boxes of ammo to see which would shoot best. I was shooting in the lane next to him and heard a crazy loud shot from his lane.
We could barely get the action open and the case wouldn't eject. We finally got it out with a cleaning rod. The head was partially separated and the body was swollen. The ejector mark was similar to the picture in the OP. IIRC it was a Hornady 180 grain for hunting.

 

[EddieNFL]

About thirty years ago I was shooting an IHMSA match next to a guy using an XP100 chambered in 7BR. After the first shot, I saw him sit up and start swearing while trying to open the bolt. He finally used a hammer to lift the bolt, but couldn't extract the case. Our local gunsmith was able to remove the bolt with the case head "welded" to the bolt-face. He machined the brass way and checked headspace which was within spec. He returned it to the owner and recommended he never fire it again.

The shooter never mentioned what happened and continued to shoot the XP.

I always made it a point to be a couple positions away from him, but he never had an issue with the gun.

 

[Aries256]

Here is a recording of The case head separation event that left that brass
View attachment 7193346
Wonder if he was able to patch it back up...

Eh a little duct tape and itll be good as new.

 

[camotoe]

That's my 5600fps load

 

[nn8734]

Eh a little duct tape and itll be good as new.

Assuming he can sew his head back onto his body, a little duct tape should allow him to get a few more firings out of that case before it gets put out to pasture for good.

 

[rgv]

I wonder how the brass that flowed into the ejector hole stayed there and didn’t get swiped off when the bolt rotated out of battery?

 

[Huskydriver]

How else do you get 300 Norma mag performance out of a 300 win mag?

 

[DarnYankeeUSMC]

I had a guy show me a 300 Win Mag case that he fired from a 300 Weatherby. There was very little neck left. He said that he has always shot them. He then showed me a half used box that all looked the same way.
There was no convincing him that he was risking serious injury.

 

[MtnCreek]

I had a guy show me a 300 Win Mag case that he fired from a 300 Weatherby. There was very little neck left. He said that he has always shot them. He then showed me a half used box that all looked the same way.
There was no convincing him that he was risking serious injury.

Not that big of a deal. Not advisable, but not much concern either. I've loaded 7rm brass in 30cal and fired it from a win mag.

 

[XLR308]

I believe the reloading session went something like this....”dude, you should try using pistol powder”

You left out one key detail in the commentary " Dude hold my beer and watch this shit "
That one liner has precipitated many ER trips and camp fire stories from those that survived to tell the tale. ???

 

[Bender]

I guess I shouldn’t have made that post on GLOCKTALK about NAVY SEALS using a full case of 700x as a good substitute for 4064.

 

[Darayavaus]

I had a guy show me a 300 Win Mag case that he fired from a 300 Weatherby. There was very little neck left. He said that he has always shot them. He then showed me a half used box that all looked the same way.
There was no convincing him that he was risking serious injury.

sounds like your average PA hunter.

 

[x_789]

Starting to see pressure signs. Back off .2 and see what it looks like.

 

[RyanScott]

Someone I knew fired a 338-06 from a 338WM and filled his tag.

 

[EddieNFL]

Someone I knew fired a 338-06 from a 338WM and filled his tag.

It's called fire-forming.

 

[VVhoisJohnGalt]

Bet that load shoots .3 all day

 

[Aries256]

Bet that load shoots .3 all day

That’s what she said ??

 

[shoot 51]

I once shot with a guy that at the 600 yd line that had a severe head separation that sent his mag flying and gave him a bloody nose. After he got cleaned up we moved to the 1000 yd range and on his first shot he drilled the x ring! I’ll bet that wasn’t the story of the op story

 

[isofahunter]

I have seen a pistol primer in a rifle case do exactly that. Shooting buddy some how got pistol primers mixed into rifle primer storage container. He never checked the box he pulled out and loaded 50 rounds. First 2 went boom the 3rd went BOOOOOOOM and scared both of us. After reviewing his loading process we discovered the empty primer tray in trash. He was lucky to have only a bloody nose and powder burned hand.

 

[Rookie]

I have seen a pistol primer in a rifle case do exactly that. Shooting buddy some how got pistol primers mixed into rifle primer storage container. He never checked the box he pulled out and loaded 50 rounds. First 2 went boom the 3rd went BOOOOOOOM and scared both of us. After reviewing his loading process we discovered the empty primer tray in trash. He was lucky to have only a bloody nose and powder burned hand.

I would have thought a pistol primer would have produced a lighter load or less reliable ignition. Weird.

 

[hermosabeach]

i fired a belt of 308 from a 30-06 1919


almost a straight cased empty

 

[Bender]

I have seen a pistol primer in a rifle case do exactly that. Shooting buddy some how got pistol primers mixed into rifle primer storage container. He never checked the box he pulled out and loaded 50 rounds. First 2 went boom the 3rd went BOOOOOOOM and scared both of us. After reviewing his loading process we discovered the empty primer tray in trash. He was lucky to have only a bloody nose and powder burned hand.

Hmmmmm I didn’t think they were that different

 

[MtnCreek]

I would have thought a pistol primer would have produced a lighter load or less reliable ignition. Weird.

A pistol primer cup is not made for rifle pressure. Kablooly.

 

[Darayavaus]

Starting to see pressure signs. Back off .2 and see what it looks like.

disagree. the sweet spot has not been found yet. roll that dice and go up another .2
fortune favors the bold.

 

[isofahunter]

Hmmmmm I didn’t think they were that different

Post incident reading leads me to believe the pistol primer did not provide complete ignition of the charge and there was a second burn after the bullet started moving causing the pressure spike. Rifle primers burn hotter and have thicker cup to handle higher pressure and charge size. It is something I think about everytime I start working at the bench.

 

[jbuck88]

It took a while to unforget the "lessons" I wa taught by my grandpa at the reloading bench. Lol.

He had at least 3 ruger blackhawks he blew up experimenting as well as at least 1 marlin 30-30 that he swore was more powerful then any 30-06. Good times. I remember the dip, level and load process quite well. Dip the case in a cereal bowl of powder, level the case mouth off with your finger, then cram a bullet on top in the press.

 

[RTH1800]

It will buff right out. ?

 

[2aBaC̶a̶]

Do another and then make cuff links.

 

[blaserman33]

That looks like it would have been a fun one to be behind the scope on! .308, 30-06. 300WM, they are all .30cal so what’s the difference? That reminds me of a time when my brother got a box 45 Long Colt ammo for my 1911, he didn’t yet understand that 45 doesn’t mean all 45. I’m glad I didn’t just loan him the gun and let him go on his own cause he is they type that would have tried to make it work even if it didn’t fit in the mag or the chamber. Lol.

 

[AIAW]

Outside of using too fast of a powder/charge or a barrel obstruction - what chambers would a 300WM round chamber in (we can’t assume the shooter was using a 300WM chamber) but still be supported enough to fire? Don‘t think a 7mm Rem Mag would.

I haven’t put much research into this question, obviously.

 

[RTH1800]

With the belt anything it would fit would fire.

 

[AIAW]

With the belt anything it would fit would fire.

Yeah that was sort of what I was thinking after I posted that. My guess would be that's probably what happened there to cause that.

 

[MtnCreek]

It would also fire in ultra mags. I could see a smaller than 30 bore causing it.

But if I hade to take a guess, I'd guess something around 4895 or faster.