.35 caliber bullet choice ???

All right you ballistics wizards, I need some help here. I am currently putting together a "semi-custom" Ruger M77 in 350 Rem. mag.  for this years deer season in November. Since I do not reload it appears that my only options in factory ammo are Remington core-lokt, 200 gr.  or else Nosler custom 225 gr. partition.  My gunsmith said that the .350 has too much energy and that the core-lokt will not hold together, causing massive damage/meat loss.  He reccomended using the partitions,  I was wondering if the partition is "too tough" of a bullet for deer? would I get enough expansion or will this bullet just zip right through?  What do you guys think?   Core-Lokt or Partition???    Thanks for your help,  Bricat                                                           p.s. Yes I know, shot placement.

A buddy of mine hunts with a 35 whelen 7600 and uses  partitions for every thing from brown bear to coyotes ( given the opportunity ). It has never failed him.

 The 200 grainers are a bit light for caliber, but I seriously doubt that they would  be very likely to blow up on a deer.  The Core-lokts I've used in other calibers always seemed fairly tough.  If given a choice, I'd flip a coin for the 225 Partition or the 250 Hornady Interlock, whichever was the more accurate in my rifle.  Partitions always expand pretty well, and usually expand very well.