Yes the Cannelure has another benefit as well.....it helps hold the lead in the jacket.

I shoot a .375 H&H and don' t crimp them.....now if I was going after dangerous game I' d probably do it as a precausion but it' s just plain not necessary.....

The recoil has a tendency to bung up the bullet points and that can be a bad thing for accuracy.....I suggest using a " protected point" in the big guns. Heck even my .270 damages the soft points in the magazine.

As far as accuracy.....you must try them both ways and determine for yourself.....I' ve never found a statistical difference.