I am shooting a encore and never have had this problem until last year and this year it seems worse. I changed powder to 777 and primers to the 777 and also changed bullets to the 250g shockwave. The gun shoots great 5 shot group at 100 yards and all bullets are touching. I run a bore butter patch after every shot just like i alwasy have but now its all i can do to get the ram rod out of the barrel after the first run then it will move freely. I have been reading about this problem but this is crazy my dads knight doesnt have this problem and my encore use to not do it. Any ideas on what to do?