ORIGINAL: heinz57

i would like to know why we use different primers in our muzzleloaders ?? i have tried out 5 different primers [only primers] and shot 15 of them each make .[REMINGTON ,CCI,WINCHESTER , ECT.....] and had no CRUDE RING when i removed the breech plug .but as soon as i loaded up with T7 and fired the rifle i got a CRUDE RING .so i believe the 209 primer has nothing to do with the CRUDE RING ..p.s. am i missing something ????