My 17HMR (Savage BSEV) is splitting the cases.Terry said:Never had a Savage that I didn't like. What's up?
There are lots of people saying that its the cases them self. Not being annealed properly. Or hot ammo. I have shot all kinds of 17HMR bullets in my savage 17 and I havent had a problem. About 1000 shots now over the last 7 months. My chamber is .002" smaller then siiris from what we can tell by the fired cases. Its 100% BS and savage/ammo manufacture should fix the problem. Just because its a rim fire doesn't mean that it can slide.queen_stick said:Siiri,
Is this still ongoing from our discussion in the rimfire section a while back?
I found some interesting info, and posted it in that thread (see link below). See the last couple of posts on the last page, if you haven't already.
http://www.accurateshooter.com/forum/index.php/topic,3751553.msg35902945.html#msg35902945
K0na_stinky said:My chamber is .002" smaller then siiris from what we can tell by the fired cases.
K0na_stinky said:There are lots of people saying that its the cases them self. Not being annealed properly. Or hot ammo. I have shot all kinds of 17HMR bullets in my savage 17 and I havent had a problem. About 1000 shots now over the last 7 months. My chamber is .002" smaller then siiris from what we can tell by the fired cases. Its 100% BS and savage/ammo manufacture should fix the problem. Just because its a rim fire doesn't mean that it can slide.queen_stick said:Siiri,
Is this still ongoing from our discussion in the rimfire section a while back?
I found some interesting info, and posted it in that thread (see link below). See the last couple of posts on the last page, if you haven't already.
http://www.accurateshooter.com/forum/index.php/topic,3751553.msg35902945.html#msg35902945
K0na_stinky said:All my fired cases seem to be giving me the same measurements.
Neck: 0.191"
Case just below the shoulder: 0.243
Case just agove the rim: 0.246
And I checked the 17HMR bullets I had. 20gr hornadys, 17gr hornadys and 17 gr federals.
They all measured the same unfired.
Neck: 0.189
Case just below the shoulder: 0.238
Case just above the rim: 0.239
RonAKA said:Not sure if you have seen this post on another forum. The poster wrote to Hornady and complained about the case splitting. Here is the answer they got:
"The 17 HMR cases may crack because of the annealing process when they are made. The annealing process is what makes the material brittle or flexible depending on the length of time and degree of the process. This is a precise procedure with any other case that can be reloaded, as we want the case to be hard enough to do the job but soft enough to stand up to several reloads. The 17 HMR case is dispensable and can not be reloaded, therefore the annealing procedure isn't quite as strict as with other cases. When the case cracks, it's because the neck was annealed a little harder than it needed to be, making it more brittle. This does not affect the accuracy or performance of the ammunition. Normally, the fired case will eject the same as any other, and unless they are picked up later, the shooter may never even know they had a case with a split neck. We would prefer that none of the cases split, (and the majority of them don't), but it seems redundant to spend the time and money on perfecting the case when it isn't practical or necessary. Our lab has evaluated cases with cracked necks, and the powder is fine, the case necks are just more brittle.
I hope that answers your questions. Please feel free to contact one of our techs who are much more familiar with our bullets, cases and ammunition than I am. Most of our technical personnel are at the Grand in Ohio this week, but will be back next week. They can be contacted by email at webmaster@hornady.com or by phone at 1-800-338-3220."
I would translate that PR smooth talk to say "We don't bother annealing a one time use case, to save money. Don't worry about it." Likely the reason it shows up in the 17 HMR and not the .22LR is that the HMR case is formed into a bottle neck shape, likely without any post annealing. Therefore it is left brittle and in a state very susceptible to stress corrosion cracking. Perhaps there are other manufacturers that anneal post forming.
See Post #8 at this link.
http://shootersforum.com/showthread.htm?t=13782
No, I feel it is affecting my safety. Everyone says not to worry about it, but what is going to happen down the road 10, 20, 50 years from now if I keep using it??? You would think there would be some ware and tear from this since it shouldn't be happening anyways.RonAKA said:Another explanation I saw was that CCI makes all the ammo. Hornady and others just put their name on it. CCI's story is that they prime the cases before they form the shoulder on the case, so they can't heat the case again to anneal it after forming. If true that makes some sense.
Why is one gun splitting and not the other? Must be an edge of the cliff thing. One is stretching the brass that bit extra to make it crack. Do you feel it is affecting accuracy?