45 ACP K baffle help

[V8Astro]

I did a search here (using Google) and didn't come up with anything. What diameter end mill is best for the mouse holes on a 45ACP K baffle? I found that a .500" bore is commonly used for 45.

[T-Rex]

Ball end mill around 7/16" should suffice.

[V8Astro]

Thanks!

[Bendersquint]

I would use a 1/2" ball endmill.

7/16" is a bit small.

[Shift1]

I had read here that the k baffle attributes should be done same diameter to the bore.

[T-Rex]

There is no right or wrong w/o more dimensional information.

I could make the same size hole, with either bit, by varying the waist OD.

I, also, do it different than most and the larger bit is not conducive to my process.

[V8Astro]

I don't have a mill. Only a drill press. I'm going to make a 45* angle jig that I can mount my 4-jaw chuck to then bolt the whole thing to the press.

What is your method or process?