kb1

Let me add what I think I know... The flat face plug for the Vision was designed and brought out just prior to the introduction of BH-209. The design of the new plug was created to make it a cleaner NFPJ plug. This was accomplished by opening the and lengthing the 'flash channel' (putting the flash hole at the end of the plug instead of under the primer), both of these two aspects reduce the amount of blow back pressure felt at the nose of the spent primer and in that case reduce the amount of blow back escaping by the primer is reduced. I also believe Gordy also opened the 'flash hole' at least 0.001" to insure a more positve ignition of T7. You can see the effects in this picture although it is a bit blurry...



This picture shows the breech area after 12 shots of 110 grains BH209. This is far cleaner than than anything Knight had going at the time. But if you look closely at the opening of the flash channel in the BP you can see already a significant build up of carbon. I doubt that it would have made another 12 shots with out a hangfire or misfire. And even at the time I thought this was a very good plug for shooting BH. Today I would have to alter thought a bit.

Another thing I might mention Gordy has used the plug for 2 years but 95% of his shooting has been with T7. When Gordy created this plug he accomplished his design goals of a cleaner - reliable NFPJ for the Vision.

For myself only.... I believe this to be a fairly reliable plug for BH through 15 consecutive shots without cleaning the flash channel. Is it 100% reliable, not for me as I do so much target shooting, but for a hunter that shoots only a few shots - it works great as long as you clean the channel every-so-often.

Here is another projection I think will happen.... When Knight re-introduces the Vision, and since Lehigh is now under contract to Knight it will have a different breech plug in it - designed to shoot BH more relieably over an extended number of shots + be really clean.

Just passing on my thoughts...