Breechplug
OK - first off remember I am not a good writer and what makesense in my head may not make sense verbally at all to anyone but me.
Mike, have you ever tried to modify a BP?
Yes, I have modified several plugs now. Lemoyne has done the same thing to some other plugs also.
I have modified Omega/Encore plugs - Knight DISC plugs and about to modify a Knight Vision plug.
does the larger flame channel allow more flame from the Primer get to the powder, thus causing a better ignition and not allowing as much blowback? Is there more blowback from the Primer or the Powder?
Let's make sure you and I are talking about the same thing... The 'flash channel' is the area directly below the primer that lead to the smal 'flash hole' in the nose of the breech plug.
Spitpatch is the person that started me on my adventure. He mentioned one day about how clean the new Vision plug was and indicated that Knight had opened the 'flash channel' from 1/8" to 5/32nds. Then I satarted thinking about the Triumph breech plug - why is it so darn clean... Answer - both of those plugs now have the ability to hold more blow back volumn in the flash channel - the Triumph because it is much longer and the new Vison plug because it will hold more volume - the abilty of the 'flash channel' to hole more volumn allows the bullet to exit the barrel before the blow back can be pushed out around the primer... the act of the bullet and pressure leaving the bore then actually sucks the flas channel clear of gases. Somebody else could explain this a lot better.
So I have opened the flash channel larger + I have installed a Lehigh vent liner. The vent liner in itself helps deflect blow back away from the 'flash hole' just by design.
The size of the 'flash hole' is a prime factor in ingnition of the powder but it also can and will allow more blow back back through the primer if it is to large. I think and believe a 'flash hole' diameter of .032 is about prime. Some people have opened this to .036 but that is to large for me. Lehigh Dave did spent a lot of time developing the correct size 'flash hole' and settled on the .032.
Here is a picture collection of what I am doing. Lemoyne is doing about the same thing...
Here is completed Knight DISC plug...
And this is a picture looking through a modified Omega plug... The channel has been opened to 5/32nds
If there was a sealed breech design would that be better, or would it be too hard to clean the inside of the barrel, or get the carbon off the end of the BP inside the barrel.
(BP)
There certainly could be a sealed breech - but think about a sidehammer - how many times have you really wanted to clean the BP.... + Breech Plugs do wear out especially inline plugs that are shot very hot and very hardso they need to be replaced....
Any of this makes any sense.... to anybody