All, I received my Lehigh Breech Plug for shooting BH 209 out of CVA muzzleloaders back from WMD Firearms today. The nitriding was pretty reasonable at $15.00. Anyway, I have some pictures below with the following three plugs from left to right, Lehigh, Western, CVA OEM Blackhorn plug, for comparison purposes. The Western Plug has been finished with NP3, which is why it is not bare stainless steel. The CVA plug came from CVA parkerized. The vent liners for the Lehigh Plug are pictured here as well. Of special note, you can see that the powder pocket on the Lehigh plug has the largest diameter, followed by the Western Plug, followed by the OEM CVA Blackhorn plug. Also, after nitriding, Fiocchi 616 primers will not fit in the primer pocket. The W209 primers that are 0.300" and longer got a slight crush fit, even with no shims on the firing pin bushing. The longest primer I fired today was a W209 that measured 0.301"; it had a 0.002" crush after closing the breech, but before firing. The other W209 primers I closed the breech on, but did not fire, that measures 0.299" or below, had no crush. The W209 primer I fired had to be removed from the primer pocket by using pliers, and exhibited signs of leaking past the primer cup. Further, the cup had the indentations of the firing pin bushing. The Fed 209A primer I fired measured 0.2965", before firing and after closing the breech, and exhibited no leaking or blowby whatsoever. The pics below have the W209 on the right, and the Fed 209A on the right. I am planning on shooting with it Monday, and will post additional impressions on it then. And by the way, I know the nitriding likely contributed to, or is the sole cause of the fit issues I experienced.