New to reloading and have question. I use H110 powder, when i look it up on the chart using a 240 bullet its listed under xtp. What does XTP mean

Extreme Terminal Performance.
It's part of the bullets design.
Like SWC, FNJ, TMJ, RN, SJHP etc.
I would suggest that you read your manual again, and this time make a few notes.

...more specifically, Hornady XTP