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.22-5-40
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.22 Rimfire priming?
Apr 1st, 2011 at 2:17pm
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Hello everyone.  I have been spending time on the Rimfire Accuracy Forum..There are some interesting posts on ELEY priming.  It seems after their plant explosion, the changed their priming formula to one where water is added AFTER mix is in case..this froms crystals & turns  to a greenish color.  The guys over on the site have been observing quite large chunks of gritty particles in fouling (silica..glass?)
with the usual 6:00 sand-blasting in bore.  Now someone has captured this fouling from an fired un-bulleted case & mixed it with water..turned green, & he thought it was type of acid..I don't think anyone has tried corrosion tests with the stuff.  I read some where that this rimfire priming is slightly corrosive.  I wonder if it is just ELEY, or if others..Lapua, Wolfe, etc. have same problem? 
   Has anyone had any experiance with this?   I would hate to think we are coming full circle in the rimfire bore corrosion problem!
  
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craigster
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Re: .22 Rimfire priming?
Reply #1 - Apr 1st, 2011 at 3:03pm
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Pull a couple bullets and dump the powder. Put a piece of clean smooth steel in front of the muzzle and fire the empties. Place the piece of steel outdoors for a day or so. If the priming compound is corrosive it will show up on the steel pretty quick.
  
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tim_s
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Re: .22 Rimfire priming?
Reply #2 - Apr 5th, 2011 at 12:46pm
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It's primarily ELEY. It is likely not corrosive, that's not what is pitting the bores. First, the primary damage is to SS match barrels which are decidedly softer. The by product of ignition is a hard crystaline substrate included in the residual fouling and this tends to get ironed into the bores with successive firing. When you observe the bore with a borescope it seems to be a mechanical process not chemical that results in the degradation.
  
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.22-5-40
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Re: .22 Rimfire priming?
Reply #3 - Apr 5th, 2011 at 1:14pm
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Hello, and thanks for replys.  tim s, You said it was primarily ELEY.  Do you know if Lapua has same problems?  I know these rimfires all have more or less gritty (glass, Silica) fouling.  If you had say a nice vintage brl. by Pope or Peterson...would it be wise to shoot another brand?  Thanks!
  
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Fred Boulton
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Re: .22 Rimfire priming?
Reply #4 - Apr 5th, 2011 at 2:27pm
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The Eley " add a drop of water" priming sytem has been in use for many years and is licenced to most other manufacturers of .22 ammunition. It is most definitely not corrosive.
Fred
  
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tim_s
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Re: .22 Rimfire priming?
Reply #5 - Apr 5th, 2011 at 6:18pm
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This type of fouling seems to be prevelant to ELEY. Your classics have barrels quite a bit harder tham stainless and we're really talking about quite a few thousands of rounds so I really think moderate use is going to prove a non event. If fearfull go with Lapua.
  
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John Boy
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Re: .22 Rimfire priming?
Reply #6 - Apr 5th, 2011 at 10:06pm
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The Eley " add a drop of water" priming sytem has been in use for many years and is licensed to most other manufacturers of .22 ammunition
Thanks Fred.  Always something new to learn on the ASSRA forum!
  
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tim_s
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Re: .22 Rimfire priming?
Reply #7 - Apr 6th, 2011 at 9:15am
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While the methodology of several other companies might be similar the compounds used are not. The priming for Lapua,SK, RWS, for instance is different and the bore effects, fouling, and rather importantly lube, as well
  
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ledball
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Re: .22 Rimfire priming?
Reply #8 - Apr 6th, 2011 at 9:34am
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IMO, it doesn't matter if Eley ammo is corrosive or not, if its the best shooting ammo, a serious match shooter will use that ammo and clean more often or rebarrel.  I doubt Eley is selling corrosive ammo, they have been around a long time.  My problem with Eley and other match ammo is there price.  ledball
  
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tim_s
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Re: .22 Rimfire priming?
Reply #9 - Apr 6th, 2011 at 11:05am
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ledball wrote on Apr 6th, 2011 at 9:34am:
IMO, it doesn't matter if Eley ammo is corrosive or not, if its the best shooting ammo, a serious match shooter will use that ammo and clean more often or rebarrel.  I doubt Eley is selling corrosive ammo, they have been around a long time.  My problem with Eley and other match ammo is there price.  ledball



The damage issue is real, well known, and of concern to bbl makers and BR shooters alike, and has been around for some time irrespective of what label for it you wish to apply.

The price issue is another issue. No question the ammo development in recent years has been substantial however prices are entering the "otherwordly" arena. Sticker on high end Lapua is $25/box so no end in sight. RWS seems to be making inroads and trust me, I feel your pain.... I use 2-3 cases a year.
  
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bnice
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Re: .22 Rimfire priming?
Reply #10 - Apr 6th, 2011 at 5:25pm
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Tim, I have been shooting smallbore for 20 plus years and this has been an issue with 10x since as far back as that. It take tons of shooting to start to see the little quarter moon in front of the chamber. I am not sure that a scrub a little more often in that area would not take care of this since that is where carbon seems to collect (if you watch rimfire central it gets talked about) and driving across this shot after shot maybe some of the cause. Just my thoughts.
  
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tim_s
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Re: .22 Rimfire priming?
Reply #11 - Apr 6th, 2011 at 10:58pm
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bnice wrote on Apr 6th, 2011 at 5:25pm:
Tim, I have been shooting smallbore for 20 plus years and this has been an issue with 10x since as far back as that. It take tons of shooting to start to see the little quarter moon in front of the chamber. I am not sure that a scrub a little more often in that area would not take care of this since that is where carbon seems to collect (if you watch rimfire central it gets talked about) and driving across this shot after shot maybe some of the cause. Just my thoughts.


That's great except that's not what the issue is, this is pitting at the 6 o'clock position well down the lenght of the barrel.
  
“ I don’t have to be faster than the bear, I just have to be faster than you”
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rimfire
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Re: .22 Rimfire priming?
Reply #12 - Apr 14th, 2011 at 2:56pm
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My Lapua Exact shoots really well but is about the dirtiest ammo that I have ever shot.  the rimfire - cdpersons
  
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tim_s
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Re: .22 Rimfire priming?
Reply #13 - Apr 15th, 2011 at 10:26am
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My Lapua Exact shoots really well but is about the dirtiest ammo that I have ever shot.  the rimfire - cdpersons


True dat, that's why for all the crap we put up with with ELEY, what it does do really well is use that great leading edge on the drive band to push so much fouling out and leave a consistant layer of clean lube in the bore for impressive shot to shot repeatability. No black bullet holes on trarget.
  
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rimfire
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Re: .22 Rimfire priming?
Reply #14 - Apr 17th, 2011 at 10:46am
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testing
  
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