Well, you could always do like I did,,take your accurate round and try crimping it. If it's more accurate, you have an answer..
Then try different loads with crimping and some without, your gun may like crimping or not.
Sorry I'm not tryin to be a smarty pants, but the best way for you and your technique is to experiment. There are different levels of crimp,,a light touch all the way to a full roll, so,,it's tough to answer how you will crimp.