different primers different story
went back to the range today to shoot my knight LRH and triumph with cci209m primers, i had been using win209. with the win209 primers in the knight i would have hangfires, (today for grins i shot one w209 and it was a hangfire). with there was a noticable difference in poi with the cci's and 120gr. bh209. the primers even bulged back after the shot. they still had the firing pin dent but the whole back end of the primer was pushed back out.
i shot 120gr and 110gr that there was about a 8" diffenece in poi in just 10grs of powder. the last time i shot with 120gr and the w209 i was very pleased with about 1" groups. i didn't think that the cci's were as consistent in grouping as the w209.
i think i'm stuck with the cci though since they caused no hangfires. i don't understand why the w209 gives me problems. i'm using the breech plug that came with the gun, the concave plug.