Knight Elite/Extreme BH209 Lehigh plug.
09-26-2009, 09:42 AM
#1
Nontypical Buck
Thread Starter
Join Date: Mar 2009
Location: Saxonburg Pa
Posts: 3,925
Knight Elite/Extreme BH209 Lehigh plug.
I got my testing of the plug done this morning. I'm only going to recommend a few changes. The flame channel to be drilled out to 5/32 like the Savage plug. And the vent-liner to be brazed in the plug so it cant be removed. And also make a FPJ version as well.
I shot the plug 25 times today. 140grns of BH209 and 150grn bullets in my 45cal Knight Elite. This plug is really clean and NO blow back at all on my scope. I put a piece of white cloth around the scope to check this. I will post more pics later when i take the plug out of the gun.
Here are pics after 25 shots.
I shot the plug 25 times today. 140grns of BH209 and 150grn bullets in my 45cal Knight Elite. This plug is really clean and NO blow back at all on my scope. I put a piece of white cloth around the scope to check this. I will post more pics later when i take the plug out of the gun.
Here are pics after 25 shots.
09-26-2009, 10:59 AM
#4
Boone & Crockett
Join Date: Aug 2004
Location: Idaho
Posts: 11,703
Grouse45
I shot what might be the FPJ version this morning... virtually no hot blow back from the barrel at all the breech still got sooty from the primer blowing debris out around the plastic jacket + I was using WELL used plastic jackets. No collection of material on the scope at all and the bolt always worked freely.
I totally disagree with the brazing of the vent liner in the BP. I know you have your safety reasons, but I would like to be able to change vent liners on my command.
I shot 24 shots this morning (T7-2f) - removed the plug and screwed the vent liner right out of the plug. With the tape and the bit of aniti-seize not a hint of a seized liner.
And the most important part it shot very well.
24 Shots later...
Not quite as clean as the NFPJ that Grouse shot... and the material you do see is from the primer. And again I need to mention I was using USED plastic jackets (6 to 10 times used)
Bolt and primer cavity...
Under side of the scope....
What material you see here is left over from previous shots with this scope mounted on a Knight. If you look closely at the label under the turrent you can see discoloration occuring from heated blowback. This occured when shooting the scope on another Knight with a factory plug.
I shot what might be the FPJ version this morning... virtually no hot blow back from the barrel at all the breech still got sooty from the primer blowing debris out around the plastic jacket + I was using WELL used plastic jackets. No collection of material on the scope at all and the bolt always worked freely.
I totally disagree with the brazing of the vent liner in the BP. I know you have your safety reasons, but I would like to be able to change vent liners on my command.
I shot 24 shots this morning (T7-2f) - removed the plug and screwed the vent liner right out of the plug. With the tape and the bit of aniti-seize not a hint of a seized liner.
And the most important part it shot very well.
24 Shots later...
Not quite as clean as the NFPJ that Grouse shot... and the material you do see is from the primer. And again I need to mention I was using USED plastic jackets (6 to 10 times used)
Bolt and primer cavity...
Under side of the scope....
What material you see here is left over from previous shots with this scope mounted on a Knight. If you look closely at the label under the turrent you can see discoloration occuring from heated blowback. This occured when shooting the scope on another Knight with a factory plug.
Last edited by sabotloader; 09-26-2009 at 11:25 AM.
09-26-2009, 12:04 PM
#5
Typical Buck
Join Date: Dec 2004
Location: Nebraska
Posts: 601
Grouse
You could use Red (High Strength) Loctite to seal the vent liner. It will be almost permanent. You would have to heat it with a torch, or put the plug over a gas/stove flame to boil/loosen the seal to replace it. And would be a more cost effective way to mass produce
I am now very interrested in BOTH plugs, and will have to have 3 NFPJ's and 2 FPJ's
.
You could use Red (High Strength) Loctite to seal the vent liner. It will be almost permanent. You would have to heat it with a torch, or put the plug over a gas/stove flame to boil/loosen the seal to replace it. And would be a more cost effective way to mass produce
I am now very interrested in BOTH plugs, and will have to have 3 NFPJ's and 2 FPJ's
.
09-26-2009, 04:04 PM
#6
Nontypical Buck
Thread Starter
Join Date: Mar 2009
Location: Saxonburg Pa
Posts: 3,925
I do want to mention i was using Teflon tape on the breech plug. I also was using the Federal 209A primers. The primer is also a compression fit so it's snug sometimes pulling the bolt back. I'm sure that will change with different primers.
Lehigh agreed to make the FPJ plug on Monday. The non FPJ plug will come with a primer holder. The current Knight version wont work. That part has been modified to seal better.
Lehigh agreed to make the FPJ plug on Monday. The non FPJ plug will come with a primer holder. The current Knight version wont work. That part has been modified to seal better.
09-26-2009, 04:10 PM
#7
Nontypical Buck
Thread Starter
Join Date: Mar 2009
Location: Saxonburg Pa
Posts: 3,925
09-26-2009, 06:13 PM
#10
Nontypical Buck
Thread Starter
Join Date: Mar 2009
Location: Saxonburg Pa
Posts: 3,925