I like you have not gotten good accuracy with CCI 450s. I tried some today versus BR4 and 400s and they just don't work well in my Dasher. Others at our local range use the 450s with great results but I can't get ultimate accuracy with them.It's funny - in the past I never had good results with #450 primers as an accuracy primer in smaller capacity cartridges (i.e. 6mmAR, 6mm Turbo 40, 6mm BR, 6.5 x 47 Lapua) yet I see many saying that's their primer of choice with the Dasher. Is there a verified specific reason why the #450 primer is a "best choice" vs a non-magnum primer (i.e. BR-4, etc.)?
Prior to this I have always avoided the #450's like the plague because the accuracy I obtained with them never seemed as good or as consistent as with other non-magnum small rifle primers, and I just cannot reconcile things here.
Robert Whitley