I WOULD LIKE TO KNOW IF ANYONE CAN ANSWER THIS QUESTION.I HAVE A T/C ENCORE PISTOL THAT SEEMS TO HAVE LOST ITS ACCURACY,I USED TO BE ABLE TO COVER A 3 SHOT GROUP WITH A QUARTER,BUT THE LAST 2 TIMES TO THE RANGE MY ACCURACY HAS LEFT ME.I HAVENT CHANGED ANYTHING AND THE BARREL HAS WELL UNDER A 1000 ROUNDS THROUGH IT.I DONT THINK ITS THE SCOPE,I USED LOCK TITE ON THE SCREWS FOR THE MOUNT AND NOTHING ELESE IS LOOSE. I USE 748 POWDER WITH PPC 64 GRAIN BULLETS CAN ANYONE ANSWER THIS FOR ME? THANKS

SNOWMAKER,
This is just a SWAG, but the bore might need a very thorough cleaning. I bend a Qtip so it will stay in the bore from the muzzle and about a quarter of an inch from the muzzle. Let a bright light shine on the Qtip and inspect the bore through a magnifing glass. this lights up the bore and lets you see everything. Good luck.

Check the fore-arm and grip screws.

If the bore is clean, it may be the scope. Mount another scope of known reliability and shoot it again.

George

There is a good chance the barrel will need a thorough cleaning.