Hello, I'm getting ready to machine the cone breach on my 1903 Springfield rebarreling project and I am wondering if anyone knows the angle. On the internet I see several different opinions, from 30 to 40 to 48 degrees, anyone know which one is correct. Thanks!
1903 Springfield cone breach angle
- Thread starter RRHK
- Start date
Speaking of the case hanging out...
The PH Midland 2100 uses a surplus Springfield coned bolt with a flat faced Mauser type barrel. The receiver ring has no internal collar. This is a design which minimizes case head enclosure.
National Ordnance made some cast receiver 03A3s. Avoid.
The Midland 2100 used a Springfield bolt, modified Mauser type barrel, had a Mauser footprint for stocking, accepted a slightly modified commercial Mauser trigger set and trigger guard. But it wasn't a 1903 type receiver.
The Midland 2100 used a Springfield bolt, modified Mauser type barrel, had a Mauser footprint for stocking, accepted a slightly modified commercial Mauser trigger set and trigger guard. But it wasn't a 1903 type receiver.
Blastattack
CGN Ultra frequent flyer
- Location
- Winnipeg MB
Original blueprints, and in fact complete instruction for the manufacture of the 1903 are readily available online. The breech cone angle is indeed exactly 48 degrees from the bore axis.
I've read about barreling the Springfield with a Mauser flat faced breach by machining the bolt face flat and in fact I have a bolt that this has been done to but I opted to go with the original cone breach as I didn't have enough info on the flat breach to want to attempt it. As an update, I did machine the cone to 48 degrees and fitted the barrel, everything looks good, I have it set up to ream the chamber tomorrow and if I get to it the extractor cut.
