Board Thread:General Nerf discussion/@comment-27985798-20200527012131/@comment-27306930-20200707111925

If you have a drill press and fasten everything down really tight, you might be able to use a standard bit. Even then it's hard to get a standard bit started precisely in an existing hole. The object being drilled cant help being  bounce around.

Only a forstner bit allows you to drill a precise hole over the top of an existing hole.