13th Tennessee Infantry and Shiloh Cannon

The 13th Tennessee Infantry under Col. Vaughan captured a Federal Battery at Shiloh. I thought I saw a reference online that those cannon were at Gettysburg Park now. However, the park historian says that the cannon are not inventoried that way and they do not know if those cannon are there or not. Does anyone have any info on this?

Looking for Great, great, grandad's past.

Thanks,

Tim Snowden