I have a .30 caliber rifle bullet and a .45 caliber pistol round from WWII that belonged to my grandfather. I'd like to drill them out and render them inert. Based on what I've learned, it seems like it would be safe for me to put some padding around the rounds, put them in a bench vise, and simple drill in (from the side, not from the primer). It does not appear that drilling will cause the powder to ignite. Anything else I should be concerned about?