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Post by cantremembermyid on Mar 30, 2009 11:33:05 GMT -5
Does the Knight non-plastic converson kit reduce blowback with the Disc Extreme or Long Range Hunter? The conversion kit has a small metal piece that slips onto the end of the bolt. When the bolt is moved forward and the primer is put onto the breech plug, it appears that the metal piece covers the opening on the side of the receiver, and it appears that this should reduce blowback.
I am thinking about purchasing this conversion kit, and I want to see what people's experiences have been with it.
Also, has anyone had any ignition problems using the conversion kit with Blackhorn 209 powder?
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Post by robnj on Mar 30, 2009 12:21:19 GMT -5
I recently purchased the NFPJ breech plug and bolt adapter for my Disc Elite (same action as Extreme & LRH) and yes it reduced blowback and primer fouling compared to the FPJ breech plug. How much it was reduced was based on the make of primer you used. When I used Rem STS and W209 primers, I had very little fouling after 20 shots. However, for BH209 most guys are recommending a hot primer like the Fed 209a or CCI 209M to get reliable ignition in cold weather. I tried the Fed 209a with BH209... I got reliable ignition and noticed more fouling, but still noticeably less than the FPJ set up. Some have reported spent primers getting stuck in the adapter. I found that turning the gun 90* to the right with the bolt open, the primers fell right out with a sharp slap on the recoil pad. I intend to keep using it .... and just switch primers based on BH209 or 777. Check out Toby Bridges' site for lots of info on the Knights and BH209 here: www.hpmuzzleloading.com/ |
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Post by cantremembermyid on Mar 30, 2009 12:57:03 GMT -5
I recently purchased the NFPJ breech plug and bolt adapter for my Disc Elite (same action as Extreme & LRH) and yes it reduced blowback and primer fouling compared to the FPJ breech plug. How much it was reduced was based on the make of primer you used. When I used Rem STS and W209 primers, I had very little fouling after 20 shots. However, for BH209 most guys are recommending a hot primer like the Fed 209a or CCI 209M to get reliable ignition in cold weather. I tried the Fed 209a with BH209... I got reliable ignition and noticed more fouling, but still noticeably less than the FPJ set up. Some have reported spent primers getting stuck in the adapter. I found that turning the gun 90* to the right with the bolt open, the primers fell right out with a sharp slap on the recoil pad. I intend to keep using it .... and just switch primers based on BH209 or 777. Check out Toby Bridges' site for lots of info on the Knights and BH209 here: www.hpmuzzleloading.com/Thanks for the information and the tip for dealing with stuck primers. I am going to try the converstion kit. I have the Knight LRH, and did some shooting over the weekend with Blackhorn 209 and the plastic jacket. I had hangfires with the Remington STS primers and a few hangfires with the 209CCIM. So, I need to do some more testing to set what work best. I am also thinking of replacing the concave breechplug with another concave plug, just to see if it might be something with the particular concave breechplug that is in the LRH now. |
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Post by robnj on Mar 30, 2009 15:16:22 GMT -5
Whoah.... If you have the original FPJ concave plug you should not be having hangfires with Fed 209a and CCI 209M's !
Something is not right. IMO the FPJ plug is the most reliable of all the Knight b/p 's right now. It may foul the breech more, but should always ignite BH209 with those 2 primers.
Make sure the breech plugs flame channel is clear of that hard primer fouling that builds up by running a 1/8" drill bit (turning it with your hand) from the primer end until it bottoms out well into the plug. If you've never done this, you will be surprised how much the flame channel can be reduced by the build up of hard, crusty fouling , even with 777. Then run a needle or nipple pick thru the flash hole.
Something else is going on there.
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Post by cantremembermyid on Mar 30, 2009 15:55:24 GMT -5
Whoah.... If you have the original FPJ concave plug you should not be having hangfires with Fed 209a and CCI 209M's ! Something is not right. IMO the FPJ plug is the most reliable of all the Knight b/p 's right now. It may foul the breech more, but should always ignite BH209 with those 2 primers. Make sure the breech plugs flame channel is clear of that hard primer fouling that builds up by running a 1/8" drill bit (turning it with your hand) from the primer end until it bottoms out well into the plug. If you've never done this, you will be surprised how much the flame channel can be reduced by the build up of hard, crusty fouling , even with 777. Then run a needle or nipple pick thru the flash hole. Something else is going on there. I was surprised by the hangfires. I have the GMRB. 54 caliber rifle that uses the Disc Extreme action, and I have not had ignition problems with that rifle using the FPJ and Blackhorn 209. The LRH is brand new, and had not been fired before. I did fire primers through the LRH rifle before I loaded the Blackhorn 209 to make sure that no grease was interfering with the ignition. But, unlike the GMRB .54 caliber, I did have hangfires with the LRH using Remington STS and CCI 209M primers even after several rounds of shooting. I can't figure out why the .54 rifle works with Blackhorn 209 but I am having hangfires with the LRH -- when both rifles are using the same type of breech plug and bolt. Thank you for the tips on cleaning out the breech plug. I will see if the breechplug that came with the new LRH needs a more thorough cleaning. |
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Post by robnj on Mar 30, 2009 16:11:13 GMT -5
Can you swap the breech plug's ? I know the .45 & .50 use the same one. and I think the .54 does too.
First, just compare the 2 looking thru the opening at the primer end... and run the 1/8" drill bit.
The first time you shot the LRH ... did it hang fire right away or well into the range session ? Oh... if it's brand new.. sometimes there can be metal shavings in the flash hole..check that out, by looking thru it.
Forgot to ask what bullet/sabot are you using ? BH209 needs a tight fitting load.
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Post by cantremembermyid on Mar 30, 2009 17:22:15 GMT -5
Can you swap the breech plug's ? I know the .45 & .50 use the same one. and I think the .54 does too. First, just compare the 2 looking thru the opening at the primer end... and run the 1/8" drill bit. The first time you shot the LRH ... did it hang fire right away or well into the range session ? Oh... if it's brand new.. sometimes there can be metal shavings in the flash hole..check that out, by looking thru it. Forgot to ask what bullet/sabot are you using ? BH209 needs a tight fitting load. I had a hangfire on the first shot, and a few other hangfires during the shooting session with the CCI 209M. I had hang fires with the Remingtons STS primers. I was using Hornady 250 gr. sst and xtp bullets with MMP .452 sabots. They were tight fitting. I was using 80 grains of Blackhorn 209, but am planning to increase this some. (I'm more interested in manageable recoil than a speedy bullet.) I think the steps are to clean the flame channel in the breechplug. If there are still hangfires with that breechplug, then swap the breechplug from the GMRB .54 into the LRH. If there are still hangfires after swapping breechplugs, then I need to consider the bolt. Maybe the bolt is not putting the primer tight enough onto the breechplug. Another thought that I have now but did not have when shooting is whether I had fully screwed out the secondary safety. If I did not fully screw out the secondary safety, then this may have diminished the impact of the firing pin hitting the primer. Thanks for your ideas on what to check. |
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Post by robnj on Mar 30, 2009 17:45:54 GMT -5
No problem with that bullet/sabot combo. And I've gone as low as 85 grs with BH209 with no problems in the Disc Elite and Omega. Keep us informed.. I'm really curious about this.  Maybe Grouse has some ideas... He's helped me with some issues with BH209.. |
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Post by grouse on Mar 30, 2009 18:36:26 GMT -5
The conversion is not reliable 100% with BH209. I had plenty of mis-fires in cold weather. The concave red plasic jacket plug as been 100% for me. I would wait for the new conversion to come out sometime this summer. It was designed for BH209.
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Post by cantremembermyid on Mar 30, 2009 19:26:18 GMT -5
The conversion is not reliable 100% with BH209. I had plenty of mis-fires in cold weather. The concave red plasic jacket plug as been 100% for me. I would wait for the new conversion to come out sometime this summer. It was designed for BH209.Robnj and Grouse: All good information. Very much appreciated. |
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