You can push the AI a little faster and wear out the barrel faster.
The bullets look cooler,but man cause feed problems in some guns.
The brass grows slower and requires less trimming.
The dies cost more ( just paid $90- yesterday for mine)
You can shoot factory brass with very good accurssery in an AI chamber.
I myself have a higher case loss from neck and shoulder splits in this chambering them any other AI I have.
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