RE: XTP Mag 240gr
By all means try the 300's. They shoot much beter in my gun. You made a good choice in those bullets. They're my favorites. They will perform great on deer with 110 grains Pyrodex. Give 'em a try!
I prefer the TC's over the Hornady's because of the price. I've shot the Hornady's lots though and can only say good things for them.