sabotloader
Have you ever heard a Triumph owner complain about BH ignition failure? I don't recall reading that Western was having problems with the Triumph breech plug.
Out of curiosity, i once left a breech plug go for firing after firing without cleaning. After many many firings, and removing the breech plug, and checking it, i found the largest drill i could get into the channel was 1/16". The breech plug still ignited BH just fine with a 1/16" flame channel.
My rifles, with a 0.028" flash hole ignite BH at -15* or so.
Magnum primers, have never been used for hunting in my rifles. Right now i am using W209 in my Omega(s), and Triumph, and V2. In the Accura, i am using STS primer.
Large volume flame channel or small volume flame channel, i experience no issues igniting BH.
If there is a good fit of the primer in the seat, there is no blow by whether one uses a Lehigh vent liner, or a PR vent liner or does not use a vent liner. If the primer seat is loose, or suffers flame cutting it doesn't matter one bit what one uses for a vent liner, there will be blow by.
I have witnessed over and over and over again what is required in the design of a breech plug to ignite BH209. Facts are facts. A 3mm flash channel is able to work with BH. A 0.028" flash hole works with BH. Leakage around the primer is not related to the volume of the flash channel, or the shape of a vent liner, it is determined by the fit of the primer in the breech plug. The flash channel does not need to be 5/32" to work with BH.
One doesn't need a lot of theories to make a good breech plug. All one need do, is copy the Omega breech plug. It works.
Not one thing i have written is 'opinion', or theory. Every thing i have written has been observed many times over.
However, i do need to add one opinion. The QRBP will end up being a paradigm changing breech plug. This is my one and only statement without basis, and is one old man's prediction of what the future brings.