I recently purchased a Traditions Pursuit UL with true glow sights (colorado) and went to the range after plenty of reading as I have never shot a muzzleloading rifle.
I used:
338gr Powerbelt Platinum with 90 grains 777 (weighed on my reloading scale)and remington primers…

at 50 yards i had a 3 shot group high and left 4"-5" and the group with open sights was 3"
at 100 yards a different story but i could barely see a point to aim at but still grouped high and left.

I'v also purchased Hornady HPB 350's and also Blackhorn powder as well to test...

I've searched my arse off and cant find anything?

my reason for posting is each time i shot i would run a dry patch down the barrel 2x then shoot again… but while reloading i never had the rod fall in the same place…. i've read ( and makes sense) that it should always be in the same place using same charges and loads…. in order to be most consistent with pressures? what is my issue? i tried to get close but never could… and accuracy seemed okay at 50 yards for my first outing…

i live in CO where scopes sabots and pellets are not legal for hunting elk…
I'm an avid bow hunter with 10 Bull harvests out of 12 years hunting with a bow… thought i would try something new…