OldBuckstalker1187
I am using basically the same lube on my patches... but speaking of patches what do they look like of they are shot.
The top row of patches are the cotton wonder lube patches show little wear these were shot with 70 grains of T7 - the bottom row are pillow ticking and the heat from T7 melts them on occasion.
Have you tried to run a tight patch down the bore to make sure that is smooth and a even push all the way down?