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Misfires
Sept 7, 2018 16:40:06 GMT -5
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Post by trekman on Sept 7, 2018 16:40:06 GMT -5
I have a CVA Scout that Jeff converted for me with the HIS ignition. In the last week I’ve had 7 misfires and one hangfire. How often should I be cleaning the plug. Any help and suggestions would be greatly appreciated.
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Post by Kyle on Sept 7, 2018 18:04:12 GMT -5
I have a CVA Scout that Jeff converted for me with the HIS ignition. In the last week I’ve had 7 misfires and one hangfire. How often should I be cleaning the plug. Any help and suggestions would be greatly appreciated. 1) Make sure you can see daylight through your flame channel before loading. 2) Make sure your your barrel and breech plug are completely dry and free of ANY oil before loading / firing. 3) Make sure your Powder and primers are of recent manufacture, stored in a dry environment without big temperature swings. 4) Make sure your primers are seated properly in the modules without crushing them, same depth is important. 5) Size the bullets tight enough to the bore that they won’t dislodge from the Powder charge. She should go bang if this is followed, assuming that the primer strikes are good.
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Post by nyhunter on Sept 7, 2018 18:14:44 GMT -5
+1 on everything Kyle mentioned above.
You did not mention your powder and primer combination ?
I've been using Jeff's HIS system for several years now out of a converted TC Encore with 56 grains of IMR 4198, Federal Large Rifle Magnum Primers, Pittman 275 Accumax's and have never had a single misfire or hang-fire.
On the most part I clean my breech-plug and flame channel after each outing.
Good luck
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Misfires
Sept 7, 2018 18:39:15 GMT -5
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Post by trekman on Sept 7, 2018 18:39:15 GMT -5
+1 on everything Kyle mentioned above. You did not mention your powder and primer combination ? I've been using Jeff's HIS system for several years now out of a converted TC Encore with 56 grains of IMR 4198, Federal Large Rifle Magnum Primers, Pittman 275 Accumax's and have never had a single misfire or hang-fire. On the most part I clean my breech-plug and flame channel after each outing. Good luck Using 55 grains of IMR4198 with wool wad, Pittman accumax 250gr, CCI LRMP. Powder, primers all new and kept in cool dry place. Rifle has around 25 rounds through it, barrel and plug have never been cleaned. I can see through the plug.
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Post by nyhunter on Sept 7, 2018 18:54:12 GMT -5
+1 on everything Kyle mentioned above. You did not mention your powder and primer combination ? I've been using Jeff's HIS system for several years now out of a converted TC Encore with 56 grains of IMR 4198, Federal Large Rifle Magnum Primers, Pittman 275 Accumax's and have never had a single misfire or hang-fire. On the most part I clean my breech-plug and flame channel after each outing. Good luck Using 55 grains of IMR4198 with wool wad, Pittman accumax 250gr, CCI LRMP. Powder, primers all new and kept in cool dry place. Rifle has around 25 rounds through it, barrel and plug have never been cleaned. I can see through the plug. Not to reiterate the more obvious of Kyle's reasons #1,2 & 3.
Pay close attention to #4 & 5:
#4 Make sure your primers are seated properly in the modules without crushing them, same depth is important.
#5 Size the bullets tight enough to the bore that they won’t dislodge from the Powder charge.
Try checking the diameter of your bushing to ensure it is within the approximate spec's that Jeff sent it to you.
Additionally I forgot to mention I use a .60 veggie wad, however I don't believe veggie vs wool should make a difference.
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Post by buckdoehunter on Sept 8, 2018 7:08:56 GMT -5
Weak firing pin strike? Does the firing pin move freely when you push on it?
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Misfires
Sept 8, 2018 7:21:32 GMT -5
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Post by jimmykip on Sept 8, 2018 7:21:32 GMT -5
Weak firing pin strike? Does the firing pin move freely when you push on it? That'd be my guess. I've got hundreds and hundreds of shots on a his system and I can't recall but two misfires. They were on a CVA Hunter and were obvious light strikes. Jimmy
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Misfires
Sept 8, 2018 8:27:05 GMT -5
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Post by trekman on Sept 8, 2018 8:27:05 GMT -5
Weak firing pin strike? Does the firing pin move freely when you push on it? Yes, it does move freely when I push it.
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Misfires
Sept 8, 2018 14:04:19 GMT -5
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Post by jspecogni on Sept 8, 2018 14:04:19 GMT -5
I assume the primer is a snug fit in the module? It doesn’t move or float?
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Misfires
Sept 8, 2018 14:14:33 GMT -5
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Post by Kyle on Sept 8, 2018 14:14:33 GMT -5
Make sure your primers are seated flush with the modules and no deeper.
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Post by 10gaauto on Sept 8, 2018 18:52:00 GMT -5
Not sure if your terminology is correct? ie... 1. Are you having failure to fire but the primer is going bang? 2. Are you having failure to ignite primer? 3. How many primers do you snap off before loading after cleaning? 4. What is cleaning protocol and what cleaning and lubrication products are you using? 5. Is the load and bullet seated firmly on the charge? 6. Have you tried sizing the bullets a bit tighter to the bore? 7. Have you tried it with Harvester light blue sabots and 40 cal 200 grain bullets?? 8. What is sizing process for your bullets? 9. Do you have an experienced SML shooter that is mentoring or helping or that can give hands on help??
The answers to these questions will give better insight into what you are doing and helping spot problem.
Safe shooting and mark that loading, range and carry ramrod. 10
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Post by trekman on Sept 9, 2018 17:56:46 GMT -5
Thanks for all the replies, advice was much appreciated. So today I did some checks, pulled the plug first and it was fine, flash hole was clear and the plug had no build up at all. Next check was primer depth because I know I have been pushing these in really hard and yes they were way past being flush with the module. I have a Frankford Arsenal hand held primer with adjustable seating depth so I back the adjustment off and started from zero. With it backed off all the way the primer was not going far enough in so when the module was in you could not pull the hammer all the way back. Each click of the dial is 0.001 so I just kept doing one click at a time until I could cock the hammer back with the module in. With this now it was as Kyle suggested and flush with the primer module. I also sized my bullets so they are a tad bit tighter. Hope to get out this weekend to try it out. Thanks again everyone !!
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Post by Kyle on Sept 9, 2018 18:47:32 GMT -5
Thanks for all the replies, advice was much appreciated. So today I did some checks, pulled the plug first and it was fine, flash hole was clear and the plug had no build up at all. Next check was primer depth because I know I have been pushing these in really hard and yes they were way past being flush with the module. I have a Frankford Arsenal hand held primer with adjustable seating depth so I back the adjustment off and started from zero. With it backed off all the way the primer was not going far enough in so when the module was in you could not pull the hammer all the way back. Each click of the dial is 0.001 so I just kept doing one click at a time until I could cock the hammer back with the module in. With this now it was as Kyle suggested and flush with the primer module. I also sized my bullets so they are a tad bit tighter. Hope to get out this weekend to try it out. Thanks again everyone !! She will go bang now!
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Post by BigMoney on Sept 9, 2020 12:05:10 GMT -5
+1 on everything Kyle mentioned above. You did not mention your powder and primer combination ? I've been using Jeff's HIS system for several years now out of a converted TC Encore with 56 grains of IMR 4198, Federal Large Rifle Magnum Primers, Pittman 275 Accumax's and have never had a single misfire or hang-fire. On the most part I clean my breech-plug and flame channel after each outing. Good luck What do you use to clean your HIS breech plug? Thanks.
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Misfires
Sept 9, 2020 16:16:58 GMT -5
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Post by jimmykip on Sept 9, 2020 16:16:58 GMT -5
I've never cleaned one. Maybe I should?
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Post by leftyml on Sept 9, 2020 18:56:21 GMT -5
Me neither!
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Misfires
Sept 9, 2020 19:55:42 GMT -5
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Post by bkm on Sept 9, 2020 19:55:42 GMT -5
Put ur breech plugs in a pill bottle and fill it with Boretech C4. Let it soak overnight then rinse with hot water then let it dry. U may have to take a pick and scrape the carbon out of the primer end of the plug as it builds up rapidly.
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Post by ultimtepredator on Sept 9, 2020 20:25:13 GMT -5
Make sure the ball is not sticking to the Jag lifting it off of the load when you pull ramrod out.this causes a gap between the powder charge and the bullet not creating the pressure needed for ignition.. Has happened to myself a few times and a good buddy of mine Had Same issues... switched to Kyle’s Jag and problem solved..
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Post by Kyle on Sept 10, 2020 17:46:20 GMT -5
Merely being able to see through a plug does not mean that the flame channel is clear. I remove my plug every 40 shots or so and mechanically remove the burnt powder fouling. A partially obstructed flame channel will alter how the main powder column ignites. Anyone that is experiencing large ES’s give this a look over.
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