I shoot them in my Accura and get sub one inch groups at 100yds. Have not experienced any hang fires(I have with BH-209). I think it is just a dirty as tripple 7 and I do swab between shots, it does leave a crud ring. I will most likely drill out my flash hole on the breechplug to use BH-209 next year, but for this year I will stick with the white hots.