It's enough to destroy a rifle. It is the rifle design that prevents serious injury because the pressure is vented through the magazine, hence the stories of magazines blowing apart.I think this is a quite common with .17hmr especially when it's combined with a cheap ammo. Luckily it's low powered cartridge so barrel still compensate excessive pressure inside without getting blown.
I bough a batch of Winchester and just by chance found a split round, when I checked them all around 5% were split, which I destroyed, now I check every round purchased, the .17HMR is a tremendous round though, I have found Hornady 17gr V-Max the best quality by far.
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Would you accept a 30% fault rate with any other ammunition?Winchester vmax by any chance?
30 out of 50 rounds with splits similar to that, including a few extending down over the shoulder, in a single unfired box of Winchester vmax was what I identified a week or so back. Across 3 boxes checked, there were 46 split necks out of 150 rounds.
Similar to other people, I really like the .17HMR. It's an amazingly accurate and potent little round but the ammo quality is a concern.
Nope. I haven't accepted it for this either. I just haven't been able to return those boxes yet. My concern is that any replacement rounds may be equally problematic.Would you accept a 30% fault rate with any other ammunition?
But surely by continuing to use the cartridge. You are accepting that you have to check and reject X number of rounds.Nope. I haven't accepted it for this either. I just haven't been able to return those boxes yet. My concern is that any replacement rounds may be equally problematic.
I still have both and love my triple deuce but the 17 really is a spectacular little round - just make sure you check each one before loading them. Mr H and his fellows should be ashamed of themselves for the way they are choosing to ignore the many reported issues with this round and by blaming rifle manufacturers. There may well be issues with some firearms as there often are with other chamberings but high rates of split cases in unfired rounds is clearly a significant issue not related to the firearm which the industry must address before someone is badly injured by the obvious poor manufacturing process and quality control of this great little round. Just my humble opinion chaps.Sold the 17 and bought a .222 for that exact reason. Glad the op is okay
I'm hoping the ammo issue does get fixed. If it isn't, the .17HMR will be going, even though I do like it.But surely by continuing to use the cartridge. You are accepting that you have to check and reject X number of rounds.
I don’t care how good it is at the niche it fills. I would not buy one on the basis that the ammunition fails to live up to the expected standard. Just a shame that the manufacturers won’t sort it out.
It's always worth reminding folk tggjgp can go wrong. Especially with new members joining all the time. I may well resurrect my ND thread on the back of this. Thanks for the safety heads upTTT
Just with one or two" hang fire " type threads - This is a little reminder
I know most wont want or need it but maybe it can stop just one accident
I am sure that a thinner needle to inject the priming compound into the neck of the case after the necks have been annealed and then spinning it into the rim would solve it, but hey, what do I know.TTT
Just with one or two" hang fire " type threads - This is a little reminder
I know most wont want or need it but maybe it can stop just one accident
I am sure that a thinner needle to inject the priming compound into the neck of the case after the necks have been annealed and then spinning it into the rim would solve it, but hey, what do I know.
I've been lucky, never had an issue, but I do struggle to get how experienced rifle shooters don't recognise an almost silent dud shot from a live one when the crack gives it away?
The best silencer in the world can't moderate the sonic crack when the round goes down range?
Thanks Bud, sorry, I didn't go back to the first post, please accept my apologiesIt never made any sound as far as i remember - so i thought i had not put a round in the chamber
Have you read my first post - that may make sort of sense

Thanks Bud, sorry, I didn't go back to the first post, please accept my apologies![]()
Possibly a very stupid question but I'm newish and always up for learning. On of the previous posts suggested always taking a rod out to check for obstruction in the barrel.. rather than a rod, would a coiled length of thick nylon strimmer line do the same job but easily carried? May have to unscrew mod to be sure, but easier than carting a rod around?![]()
You can check for an obstruction, but you can't get it out, when I have helped out a couple of people with squib HMR rounds I have used/recommended 4mm anodised ally rod from from Screwfix for about £3Possibly a very stupid question but I'm newish and always up for learning. On of the previous posts suggested always taking a rod out to check for obstruction in the barrel.. rather than a rod, would a coiled length of thick nylon strimmer line do the same job but easily carried? May have to unscrew mod to be sure, but easier than carting a rod around?![]()