Newbie to the forum here.....
I acquired a couple of years ago a Springfield M1903 that has the rear base installed for a Unertl 8x scope, but not the front. I bought a set of bases from Steve Earle and a C-stock, and I want to convert it to a CMPicon legal 1903A1 USMC Sniper for the Vintage Sniper matches.

So, I need to mount the front base. My question is - what is the thickness of the barrel 7-8" forward forward of the breech end?

The front base mounting screws protrude about 0.140" from the bottom of the block, so allowing for the drill tip, I'm looking at drilling about 0.200" deep into the barrel. I want to make sure I don't drill into the bore, and that I leave enough metal there to keep the gun safe, while also getting enough thread depth to be secure. Am I okay drilling this deep, or do I need to shorten the screws?

Thanks in advance for the help!
John
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