Seneca dragon claw

I cannot seem to get mine to shoot straight. My shot are all over the target!!

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I cannot seem to get mine to shoot straight. My shot are all over the target!!

View attachment 420264

Are you use .495 or .498 ammo? Mine has made touching groups at 50 with everything I have stuffed into the breech. .495 round balls don't seat against the chamber well, they will just push into the bore.