what do you fellas think about fireforming dasher cases in a criterion barrel/ 272/ no turn nk. using old type brass & 107gr. smk/ 450cci mag primers& 29.5 to30gr of varget with 4th. nk. tension& bullet in rifling 20th. or so / and i use redding bushing type dies i know because of the difference in shoulder angle im going to have to get a die to kick back shoulder and size case /i have formed lots of 6mmbrx cases using 30.5 gr. of varget & 107smk well into rifling &4th. nk tension just wondering if it would do just as well in dasher /thanks for any help or comments on this regards shooter63