[m&p45acp10+1]

Try turning the sizing die down in half turn increments, and skip the crimping. See if they chamber easily. Note do not use the Collet Neck Sizing die with a semi auto. All rounds for semi Auto must be FL resized.

With the turing the die down till the rounds chamber easily. Now take a batch to the range uncrimped. Fire one round extrac the next round do this with 5 rounds. Measure the extracted rounds. If they measure to within +/- .002 skip crimping. If they are longer then crimping may be needed.