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Post by kwilliams on Aug 5, 2014 7:02:17 GMT -5
Hi guys. I'm new to inline muzzleloading and recently bought two bare primer Knight Mountaineer muzzleloaders (.50 caliber). Question to the forum ... is there a way to determine (by measurement) when the breech plug needs replaced. Also, approximately how many shots can you get using a stiff load (80 grains by weight of BH 209) of powder. Communication with Knight is difficult and I'm hoping the expertise in this forum can help. Thanks in advance and good day gents !
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Post by GMB54-120 on Aug 5, 2014 10:22:22 GMT -5
Use a torch tip cleaner and measure the largest one that fits with a micrometer. Dont force the rough part of the torch tip cleaner in the flash hole. Just gently use the smooth part.
IMO, after .035 they tend to erode fairly quick and accuracy begins to suffer. Blowby begins to get bad also.
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Post by kwilliams on Aug 5, 2014 13:05:03 GMT -5
Great advice and thank you !
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Post by bestill on Aug 5, 2014 19:15:14 GMT -5
Imo id get with luke at arrowhead sporting goods and purchase old style carbide bushing and install in your old plug and you will never need to replace it. When original plug goes past .040 it will cause trouble.
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Post by lakeplainshunter on Aug 6, 2014 4:01:02 GMT -5
Imo id get with luke at arrowhead sporting goods and purchase old style carbide bushing and install in your old plug and you will never need to replace it. When original plug goes past .040 it will cause trouble. Why the old style carbide bushing and not the new pure tungsten bushing?
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Post by bestill on Aug 6, 2014 18:58:25 GMT -5
I know very little about new bushing and i have used several old style bushings with sub powder with great success. Gun is not smokeless build. So i only gave opinion on what i know. Got over 1000 shots on old bushing with heavy bh loads with327 mh. And i know luke would sell customer best option for his build. But either bushing be way better than ventliner
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Post by ronlaughlin on Aug 6, 2014 19:41:38 GMT -5
Hi guys. I'm new to inline muzzleloading and recently bought two bare primer Knight Mountaineer muzzleloaders (.50 caliber). Question to the forum ... is there a way to determine (by measurement) when the breech plug needs replaced. Also, approximately how many shots can you get using a stiff load (80 grains by weight of BH 209) of powder. Communication with Knight is difficult and I'm hoping the expertise in this forum can help. Thanks in advance and good day gents ! Myself, i would replace the breech plug when there started to be blow by through the primer. This happens to me after the vent erodes larger than about 0.036". In my Mountaineer, i used W209 primer, and about 77g (weight) Blackhorn. The breech plug i had was sent with a vent liner brazed to the plug so it couldn't be removed. It seemed to me the braze process may have affected the durability of the vent. It wore out after just a few shots past 100. Then what i did with much knashing of teeth was remove the vent liner. It was extremely hard, and the process resulted in dulling the cutters i used. I have done this to 3 Knight breech plugs, and none went well. However, once the brazed vent liner is removed, and the threads chased with a tap, a removable vent liner can be installed. This allows one to shoot hundreds of shots without noticeable wear, if one uses a Lehigh vent liner, according to those that do. Myself, i used home made vent liners, and they lasted about 200 shots before the vent eroded to 0.035". It probably would be just fine to adapt the plug to use a bushing, but it doesn't really seem very necessary to me, when one can shoot hundreds of shots through a vent liner. To me the biggest issue is Knight providing a breech plug with a brazed vent liner. If they would provide a breech plug with just a flash hole drilled in the plug, it would be so trivial to install a bushing, and/or a vent liner, when the plug wore out.
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Post by bestill on Aug 6, 2014 20:23:04 GMT -5
I shoot a custom knight with 100 gr by weight and 327 bullet and in 20 shots the ventliner is over .050 and i went thru process of changing ventliners so they were replacable . So end result for me was going with bushing install which was no more work than getting brazed ventliner out. But with bushing you wont have to do it again with shooting sub powder.
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Post by kwilliams on Aug 12, 2014 13:02:17 GMT -5
McMaster Carr offers cheap plug gauges. I bought 2. (0.036" as a no-go for the Knight breech plug. Thanks again for the information and suggestions !
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