OK, I kinda have lost track of "who said what"... but I do remember a comment I would like to speak to...

The 'vent liner' - need or no need??? Personally for me the vent liner has been a very acceted and appreciated little device, and yes there is no doubt in me mind the geometry of the Lehigh vent liner, which I had nothing to do with anyway i do not remember if i did, is the best desgin out there and not jst because of the hole in the end of it (flash hole). The inverted cone does a lot more for the operation of the breech than a lot are aware of. But, back to the 'vent liner' itself.

Along time ago and I remember back then.... we quite regularly erroded and gas cut the flash hole in normal breech plugs shooting the hotter loads with hotter primers. Then, in those days I would order another Omega BP and go again. Then one day Lee and I were discussing the problem online and I think I even remember the exact words... "heck! drill it tap it and installed a Lehigh Vent Liner"... some like $5.00 vs $20 - we both did that and from their I have no idea where it might end. At that time the Lehigh BP was not even on my radar screen I did not own a Knight.

But the thought of the Lehigh Vent Liner at the time was an easy fix as well as opening the flame channel to allow a less constricted port for the primer flash. The material (metal) the vent liner is built from would never be used by a commercial company, it was to expensive, the manufacturing process to build the vent liner would also not be used by a commercial company, again to expensive. And the hardening process that Dave demands on his liners would also not be used by a commercial gun maker, to expensive... The inverted cone design... I do not know how Dave came up with that jewel but it was a stroke of greatness for us. Heck! I still have some of his original design liners that he and Tom fashioned... they certainly work - but the material, design, engineering, and consrtuction of the current Lehigh liner far exceed anything else on the market, and I will be darned if it is not less expensive (really should have never said that last line) I have installed Lehigh vent liners in all of my TC guns, even the Omega plug with 25ACP ignition, and if I were still shooting the Remington 700 more I would do the same thing to it.

So yes... not all vent liners are created or function the same!!!