Most of the deer that I have killed using my 240 fell to the 95 grain Ballistic Tips. It's an accurate bullet and delivers quick kills. The 95 grain Partition also shoots well and was used on one of my best white tail bucks. I have some of those 95 grain Bergers but haven't shot them yet, I suspect they would do well. I have a new Kreiger 7.5 twist barrel now on my Mark V and it shoots the Berger 105 quite well and worked good on the one buck that I shot with it so far with a complete pass through and a large exit wound. You will be limited with the 10 twist but the 95 grain and regular 100 grain will do most of what you need. When I used mine for ground hogs and foxes, I used the 75 and 80 grain varmint bullets so there was less of a chance of ricochets. Some guys will recommend the 85 grain Sierra hpbt as an all-around bullet, but I had them hold together and keep on going after going through a ground hog several times. It is an accurate bullet though.
Gary