What twist of rifling do i need on a 243 barrel to shoot 85 to 100gr bullets this rifle will be just used for deer hunting,i have a stevens mod 200 in243 thati bought to use for deer hunting ,but it dont like any 100gr bullets , so there for i got it dialed in with 65gr v max bullets for a predator rifle, but i am wanting a 243 to hunt deer with i have a 25-06 so please dont tell me i need a bigger rifle than a 243. thanks for the info