Why do you want to use a 410 for deer?I am not asking to be a jerk,Is it for you?for a young hunter?Do you need something to use to hunt deer?I have a 12 ga. with a slug bbl and a scope if you would like to use it.If you have another option I PERSONALLY would not use a 410.They would have a very limited range of effectiveness....If you want the gun drilled it may help to know what it is,I assume it is a pump gun.Please don't think I am trying in any manner to be rude towards you.