Staggerwing
40 Cal.
Not sure if this is the right forum to post this or in the gun builder section but I figure one of you can help me with this question. I'm on my first build. I drilled and tapped my barrel and when I was threading in the drum I noticed something for the first time. There is a chamfer above the threads on the drum. So, my question is, do I need to chamfer the hole in the barrel such that the wall of the drum is tight against the barrel or can it stand off a bit as long as it's tight? I have a feeling I know what the answer is but wanted to check with you all.