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Posted: 2/19/2010 6:17:19 AM EDT
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I am having some trouble with my 7mm mag reloads. About half the time I shoot, there seems to be a delay from pulling the trigger to light-off. Sometimes I can actually see the bolt going forward and hear the click before the gun fires. I am using Win 760 powder, CCI LRM primers. Any ideas what causing this/how to remedy it? Anyone else ever had this problem? Also, out of about 60 reloads I have had two fail to ignite, and it wasn't a light primer strike. Did I get a bad lot of primers?
This seriously degrades accuracy, I missed two coyotes this morning because of it. 
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Pull the bullets from a couple of cases. If the powder is clumping, then the powder is damp. Another thing to check is the charge. If the charge is too light, this may be the problem as well.
These are the two top things that I can think of that can cause the problem you describe. Another question, in the non-fires, are the bullets still seated in their original position or have they moved forward a bit? |
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First of all are you sure the flash holes are not obsrtucted; say by tumbler media? If not, make sure that you don't have a problem with the ignition system i.e oil accumulation in the bolt. I had a hunting buddy who had a 1917 eddystone that had been sporterizedand made into a 300 mag. The gunsmith who did the work never took the cosmoline out of the bolt when he re-blued it. it worked great ain SOCAL in 85deg weather but when he got it up here in -20 deg weather you could see the striker move like a snail and the gun would never go off.
after cleaning it out and replacing the very rusted mainspring the gun worked like a champ. Degrease your bolt and try some dry lube. otherwise write winchester. |
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I shot a guys .264 Win Mag before deer season in late October with some reloads using Magtech primers that did the same thing. I blamed it on the primers as the gun was a brand new Ruger and seemed to be hitting the primer very hard. There was a small delay barely noticeable, just enough to make the crosshairs jump before ignition.
If the above suggestions don't fix your problems, try a new box of primers from a different lot number or manufacturer, then try a new can of powder from a different lot. |
| Make sure the primer is fully seated, otherwise the firing pin isn't getting a good strike...instead it might be just "seating" the primer more. Same thing can be said if the cartridge is sized to much. It might be shifting forward as the firing pin hits it. The last one isn't as likely since it is a belted case. |
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My friend loaded for a 45-70 - and he was NOT a good reloader. Wrong powder, primers or whatever but
this thing would hang fire for what seemed like an eternity. You would pull the trigger, hear pssst them WOOOOOMMMMMFFFFFFF!! He thought it was funny. I was scared to death. It made it seem like a flintlock was modern technology. And it walloped the beezesus out of your shoulder. I moved far away from him. Check your flash holes, check your powder and procedures. Hangfires are serious - and are an indication that something is gravely wrong. It can also produce incredible pressure spikes and destroy guns and hurt people. |
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Quoted:
I am having some trouble with my 7mm mag reloads. About half the time I shoot, there seems to be a delay from pulling the trigger to light-off. Sometimes I can actually see the bolt going forward and hear the click before the gun fires. I am using Win 760 powder, CCI LRM primers. Any ideas what causing this/how to remedy it? Anyone else ever had this problem? Also, out of about 60 reloads I have had two fail to ignite, and it wasn't a light primer strike. Did I get a bad lot of primers? This seriously degrades accuracy, I missed two coyotes this morning because of it. A few possibilities. 1) Damp / contaminated powder 2) Bad lot of primers (unlikely) 3) Powder charge too light I've had the infamous click-bang issue with Win 748 in .223 with standard rifle primers when my start loads were a bit too light. |
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Quoted:
First of all are you sure the flash holes are not obsrtucted; say by tumbler media? If not, make sure that you don't have a problem with the ignition system i.e oil accumulation in the bolt. I had a hunting buddy who had a 1917 eddystone that had been sporterizedand made into a 300 mag. The gunsmith who did the work never took the cosmoline out of the bolt when he re-blued it. it worked great ain SOCAL in 85deg weather but when he got it up here in -20 deg weather you could see the striker move like a snail and the gun would never go off. after cleaning it out and replacing the very rusted mainspring the gun worked like a champ. Degrease your bolt and try some dry lube. otherwise write winchester. this is whati was thinking, dirty bolt |
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Quoted:
Make sure the primer is fully seated, otherwise the firing pin isn't getting a good strike...instead it might be just "seating" the primer more. Same thing can be said if the cartridge is sized to much. It might be shifting forward as the firing pin hits it. The last one isn't as likely since it is a belted case. What I was going to say also. Check primer seating. You want the primer .002 to .008 below the case head. |
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