Good pics at the link:
http://smith-wessonforum.com/eve/forums/a/tpc/f/500103904/m/9621034932/p/1
damn, I have about 600 rounds of the ammo…hopefully it will turn out alright when I am shooting it…
Your willing to shoot the stuff after someone elses rifle goes kerblammo with it (and all the bad press ultramax has recieved on other forums?)…Your braver than I am!!!
John
just about every ammo maker has had some sort of Kaboom and if I listened to all the stories that go around all the time, I would just shoot my bow… yes, I will shoot it and won’t worry about it…
I don’t know man. Back in the bad old days I can recall more then one laminated bow limb shattering into a million pieces! Could be dangerous too! 
good one:)
The key word in my post is ‘another’.
This is Ultramax, not Black Hills. All commercial reloads are not equal.
Ultramax had developed quite a reputation for blowing up rifles. This is another in a long line of many such incidents.
Pay you money and take your chances, it is your rifle.
There are, by far, more available reports of KB’s with Ultramax than just about any other manufacturer, and its not even close. Sure, every maker builds a bum round once in a while, but there’s a huge stack of reports of KB’s where Ultramax was the ammo being used at the time. If I have to choose between chucking a $300 case of ammo or my $1500 worth of rifle, that’s a no brainer to me.
I have some Ultramag 125 gr 38 Special for wheelgun practice/training and as soon as it is gone it will be the last of them I ever buy.
I just ran 1K worth of Ultramax at a shooting school. No issues at all.
All reloaded Ammo is going to give you a kaboom at some time or another. The only part that really matters is how the manufacturer handles it.
C4
Grant, I don’t see why.
The only difference between reloaded ammo and first run is that the brass has already been used once or more in the former. The process and process controls for actually making the ammo should be the same. Maybe that’s why Black Hills has a good rep and Ultramax does not.
Thinner brass, mis-formed casings, incorrectly seated primers, etc. There are a whole host of possible reasons for it and to be honest it really doesn’t matter if it goes kaboom (as I wear Oakley shooting glasses).
What does get me pissed is when the manufacturer won’t cover the damages.
C4
Not to bad mouth Black Hills as I love their ammo and use it a lot.
I’ve worked on 3 ARs that had problems of their reloaded (blue box) where the casings got ripped in half and left the forward half in the chamber. This was in a Colt 6920, a RRA Elite A4 (middy), and a LMT 10.5" SBR. It was easy to get the forward half of the casing out of the chamber. In each instance it was WCC or LC brass.
I’ve worked on 3 ARs that had problems of their reloaded (blue box) where the casings got ripped in half and left the forward half in the chamber.
Sounds like loads that came from casings from rounds fired thru a SAW with long headspace.
Still, case head sepaerations do not bother me much. KB’s bother me.
I am sure Black Hills has blown up a weapon or two but I have not heard of it.
That’s my conclusion as well.
Saw the pics, man that sucks! Sorry to the fella that owns the rifle. 
The pics show a classic “stuck bolt” KB - as evidenced by the separation of the upper along the forge seam line.
Here is what happens:
For some reason such as overpressure round, partial case separation, etc., the bolt becomes locked in battery as the bullet moves forward.
When the bullet passes the gas port, it sends a high pressure jet of gas to the carrier, beginning the carrier’s rearward travel.
The carrier attempts to cam or rotate the frozen bolt.
Since the bolt refuses to rotate, the carrier is forced to rotate.
Only the carrier key is preventing the whole carrier from rotating. The key is forced to the left and bears against the upper receiver and charging handle with so much force that the upper is split from the inside.
The stuck bolt also prevents venting of gas through the vent holes in the left side of the carrier - which is why the bottom of the carrier is pealed back.
A post mortem of this KB or any similar type of KB in the AR will reveal: a bolt in battery and a heavy score mark on the left internal surface of the upper from the carrier key’s attempt to rotate.
TY-44934
I think anytime you shoot reloads you’re taking a risk, I buy the Blackhills 77g .5.56 factory seconds when ever I can, and I love their reloads.
I almost lost my 92fs due to a squib from some gun store reloads, and I’m just glad that I decided something was odd and took the gun apart instead of pulling the trigger again.
I would qualify that to say “every time you shoot SOMEONE ELSE’S reloads, you’re taking a risk”.
I cannot think of higher quality ammo for my firearms than that hand made by me using carefully selected quality components and checked at every step with no pressures to put anything towards the bottom line.
Speaking with Shep Kelly, who knows more about this business then anyone i have ever met- he states that this is usually a defect in the brass during the drawing process. This will happen to x amount of cases in any lot.
I have been running BH for a long time (I’m a Master Dealer) and have seen this happen once with them, just recently.
It can be from other causes as well, but Shep worked for Federal when it was a viable company making good ammo. So, i’ll take his counsel…