if anyone has any .17hmr ammo in their possession I've got a question that perhaps you can help me with - thanks
Might be about the safety of it. There is a fairly recent thread here about .17 rifles blowing up. And, faulty ammo.Yes the vast majority of of 17 HMR ammunition is made by CCI no matter the labeling.
Did I guess the question?
I seemed to remember it was a bolt gun. I think tacfoly posted info from the UK about the same thing as I recall.thanks for signing on fellows - it was me that reported my Wife's 17hmr Savage (93R17BRJ) "blowing up".....and my question is about the ammo that you might have
the ammo that was being used when one of the rounds "exploded" was Winchester Varmint HV 17gr Polymer Tip V-Max - after the incident I got to closely examining the remaining ammo from that box and discovered that just about every other round has a small crack in the brass - in the bottle-necked part of the brass - the cracks run from front (where the bullet is) towards the rear (the primer end) and they're less than 1/8" (about the length of the bottle-neck)
they're very hard to see with my old eyes so I look for the cracks in good lighting but can also "feel" them with a fingernail
I've got about 10 boxes of the Winchester ammo and tomorrow will go thru each round to find the good and the bad - also have 3 boxes of Hornady V-Max and will check those too
so, if someone would be so kind, I'd appreciate your taking a close look at a sample of any ammo that you might have - just to see if you might find any "bad" - thanks again for any report you might offer
Pictures man..😁Re: manufacture of .17 HMR ammo- it is done differently that other rimfires. With other RF, they form the case, THEN add wet priming compound, spin the case to push primer compound out into the rim, dry them, then the rest of the steps.
But the skinny neck on fully formed 17 brass would prevent getting the primer in there. So the 17 gets primed, dried, THEN necked. but necking the brass was work hardening it, leading to cracks when it had the bullet installed. Gee, not a problem- when brass gets hardened, you anneal it by heating it, and letting it cool. but hold on- you can't heat a primed cartridge case! BANG!
Cases with cracked necks did not have sufficient tension to hold a jacketed bullet in the case when the primer fired, and the powder was not being fully lit- but the primer WOULD push the bullet into the barrel - leaving you with an obstructed bore for the next shot. Ungood.
CCI has found a way to anneal without heat- and what that is, they ain't saying. And they seem to have fixed the cracked neck problem.
Right now I have about 3K rounds of .17 HMR in the stash (Hey- I caught a good sale- OK?) and the case necks are OK on ammo loaded in the past few years.
My rifle is a Savage 93R17, added a bipod and some pretty fair glass, and it is about the closest thing I have owned to a death ray. From the bench with no wind, have shot quarter inch sized groups at 100 yards, witnessed by our Range Officer.