Yes, i believe that is true also. The OEM plug with a vent liner added with the correct flash channel volume is better than either of the BH209 plugs.
A tungsten carbide bushing would be even better than a vent liner but the cost goes up a great deal. Those bushings are around $30 each but may last 1000 shots or more.
Last edited by Gm54-120; 12-11-2015 at 07:57 AM.