I have a TC Encore 15" 7-08 and love it ,it is a true 200 yd deer cart. from the TC.
I have played with a 375 JDJ all I can say is WOW. It has been used to take cape buffalo and elafent . It will kill deer but it is more for the biger stuff.
Recoil is stout ,not for the beginer. Muzzel blast is bad ,plugs are a must if you don't want your ears to ring for days.
I have the 375 JDJ barrel as my next on the "I want it but can't tell you why" list.