Amazed Posted October 23, 2012 Report Share Posted October 23, 2012 Hi all, having just got a box of Remington 6 1/2 small rifle primers. Had a few fail to fire. And was wondering what is the normal failure rate as I am running at about 8% at the min. Thanks Karl. Quote Link to comment Share on other sites More sharing options...
al4x Posted October 23, 2012 Report Share Posted October 23, 2012 the normal rate should be very low, I can't remember having one on anything I've loaded. Quote Link to comment Share on other sites More sharing options...
coyotemaster Posted October 23, 2012 Report Share Posted October 23, 2012 I would say 0% would be my tolerance rate on primers. If some fail to fire what guarantee is there that the others are full force? I use Remington 7 1/2 Bench rest primers and have not had a misfire-----ever. Quote Link to comment Share on other sites More sharing options...
Harnser Posted October 23, 2012 Report Share Posted October 23, 2012 (edited) Are you sure that you are not getting light strikes ? I carnt remember a primer not going off ,unless it was a light strike . Harnser . Edited October 23, 2012 by Harnser Quote Link to comment Share on other sites More sharing options...
matone Posted October 23, 2012 Report Share Posted October 23, 2012 Agree with the others ! One bad primer would be a cause for concern. Quote Link to comment Share on other sites More sharing options...
Amazed Posted October 23, 2012 Author Report Share Posted October 23, 2012 Thank you for your replies. The rifle is a cz 527 22 hornet and it does strike the primer slightly off centre but does put a good dint in. Is there any test or would it be worth just replacing the spring and pin aswell ? Quote Link to comment Share on other sites More sharing options...
jamie g Posted October 24, 2012 Report Share Posted October 24, 2012 I would say 0% would be my tolerance rate on primers. If some fail to fire what guarantee is there that the others are full force? I use Remington 7 1/2 Bench rest primers and have not had a misfire-----ever. same here have you made sure your primer pockets are clean etc before you reload the cases. Quote Link to comment Share on other sites More sharing options...
Amazed Posted October 24, 2012 Author Report Share Posted October 24, 2012 same here have you made sure your primer pockets are clean etc before you reload the cases. Yes mate most are new cases cleaned and de burred may be a faulty batch ? Thanks Karl. Quote Link to comment Share on other sites More sharing options...
cleaner4hire Posted October 24, 2012 Report Share Posted October 24, 2012 could they have gotten damp? Quote Link to comment Share on other sites More sharing options...
Browning Posted October 24, 2012 Report Share Posted October 24, 2012 I've never had either large or small rifle primer failures in 30 years of reloading. If they are new I would take them back to the RFD and get him to exchange them. If they are not new I would dispose of them and buy some new ones. Quote Link to comment Share on other sites More sharing options...
1066 Posted October 24, 2012 Report Share Posted October 24, 2012 Blimey - 8%. I would be concerned about your off centre firing pin strike. If the strike isn't directly over the anvil in the primer it may well cause problems. Quote Link to comment Share on other sites More sharing options...
Bewsher500 Posted October 24, 2012 Report Share Posted October 24, 2012 over 2000 CCI with no FTF Quote Link to comment Share on other sites More sharing options...
Amazed Posted October 24, 2012 Author Report Share Posted October 24, 2012 Ok thank you for your replies will have a look at the bolt n give it a clean. The gun hasn't seen much action from its previous owner but may of sat with the bolt spring loaded for long periods. Will look into a new spring and see how I go. Or my bob the primers back to the rfd for a swap Thanks Quote Link to comment Share on other sites More sharing options...
njc110381 Posted October 24, 2012 Report Share Posted October 24, 2012 (edited) I have the exact same rifle and it gets left with the bolt spring under tension for maybe 50% of it's life. I've just put it in for a rebarrel after an estimated 10,000 rounds down it and I can only think of one misfire from it. I use CCI small pistol primers in my homeloads for the hornet and they work a treat. Edited October 24, 2012 by njc110381 Quote Link to comment Share on other sites More sharing options...
pigeon pete Posted October 24, 2012 Report Share Posted October 24, 2012 have you striped and cleaned your bolt ,could be dirt inside ,do you get the same problem with any other primer ? Quote Link to comment Share on other sites More sharing options...
Amazed Posted October 25, 2012 Author Report Share Posted October 25, 2012 (edited) have you striped and cleaned your bolt ,could be dirt inside ,do you get the same problem with any other primer ? Thanks pal, that will be the first avenue of enquires I think I can check the pin aswell make sure it's all cosha. Has anyone any ideas where to get the min/ max od sizes of the spring and pin ? so I can check them with the calipers when it's in bits thanks all Karl Edited October 25, 2012 by Amazed Quote Link to comment Share on other sites More sharing options...
JonathanL Posted October 28, 2012 Report Share Posted October 28, 2012 Thank you for your replies. The rifle is a cz 527 22 hornet and it does strike the primer slightly off centre but does put a good dint in. Is there any test or would it be worth just replacing the spring and pin aswell ? That is most probably your problem. If the firing pin doesn't strike within a very short distance of the centre of the primer then you will likely get a failure to fire. The anvil covers a very small area of the primer and if the firing pin isn't in line with it then it won't fire. J. Quote Link to comment Share on other sites More sharing options...
Amazed Posted November 4, 2012 Author Report Share Posted November 4, 2012 That is most probably your problem. If the firing pin doesn't strike within a very short distance of the centre of the primer then you will likely get a failure to fire. The anvil covers a very small area of the primer and if the firing pin isn't in line with it then it won't fire. J. Hi pal, I have had a look at the bolt and it looks like the spring is at fault. There isn't enough residual tension in it to throw the pin right out so am ordering a new one any point in getting a new pin at the same time ? Or does anyone know of a after market up rated firing pin assembly for a cz 527 ? Thanks all Karl. Quote Link to comment Share on other sites More sharing options...
fruitloop Posted November 4, 2012 Report Share Posted November 4, 2012 (edited) is there presure in the spring when u strip the bolt ?? if yes its most likly not the spring but dirt in the end of the bolt sleeve where the pin gose in it at the back of the bolt (the black bit fixed to the end of the pin) can be dificult to get some thing down there to cleen well but id strip the bolt and give it a good cleening out befor buying new parts.. http://www.czub.cz/z...nual-CZ-527.pdf can u put a pic up of the bolt face with the pin out and a pic of a spent bullet brass that came from the gun Edited November 4, 2012 by fruitloop Quote Link to comment Share on other sites More sharing options...
Amazed Posted November 4, 2012 Author Report Share Posted November 4, 2012 is there presure in the spring when u strip the bolt ?? if yes its most likly not the spring but dirt in the end of the bolt sleeve where the pin gose in it at the back of the bolt (the black bit fixed to the end of the pin) can be dificult to get some thing down there to cleen well but id strip the bolt and give it a good cleening out befor buying new parts.. http://www.czub.cz/z...nual-CZ-527.pdf can u put a pic up of the bolt face with the pin out and a pic of a spent bullet brass that came from the gun Hi pal, there is no pressure at all the bolt handle comes our really easily and the spring looks almost compressed lol. Will put some pics up later am at work all day :( Thanks Karl. Quote Link to comment Share on other sites More sharing options...
fruitloop Posted November 4, 2012 Report Share Posted November 4, 2012 yes the bolt handle will come out easybut when you push the spring back to relese the spring coller that you twist to release the spring from the pin thats where the pressure is . Quote Link to comment Share on other sites More sharing options...
Amazed Posted November 4, 2012 Author Report Share Posted November 4, 2012 (edited) Hi pal. I see now yes I carnt push it back far enough by hand so the spring has plenty of tension. I think I have found the problem I looked at the other part if the bolt. And on the end where the black end bit sits and locks into place. One of the grooves is machined really badly. I think the pin is catching this every so often slowing the pin enough not to set off the primer. Thank you very much Karl Edited November 4, 2012 by Amazed Quote Link to comment Share on other sites More sharing options...
fruitloop Posted November 4, 2012 Report Share Posted November 4, 2012 just did a vid to put on you tube to show you but its still up loading Quote Link to comment Share on other sites More sharing options...
Amazed Posted November 4, 2012 Author Report Share Posted November 4, 2012 just did a vid to put on you tube to show you but its still up loading Bless ya thanks pal. I have taken a pic of the offending part I will work it smooth with some wet n dry wrapped round something. I managed to get the spring out by hand and tried the pin on its own to confirm and yes I can feel it catch just enough to slow it down. Thanks again. will upload the pics later on when I can get to the laptop Karl. Quote Link to comment Share on other sites More sharing options...
fruitloop Posted November 4, 2012 Report Share Posted November 4, 2012 (edited) when putting it back together make shure you get the spring coller the right way Edited November 4, 2012 by fruitloop Quote Link to comment Share on other sites More sharing options...
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