Chambering 7.62 barrel to 30-06
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I don't think it will work.. I believe that the 308 case is wider at the case web (near the extractor groove) than 30-06 cases.. I dont haveaccess to my books right at the moment to give the exact numbers..
Here"s the rub. The 7.62 round is a straighter case than the 30-06. If you measure the 7.62 at the shoulder you will find that it measures about .452 If you mark a 30-06 round at the same place where the shoulder of a 7.62 round is you will find a diameter closer to .442. This means that when you get through reaming you will likely have a groove at that point in the chamber. If you do end up with a groove in the chamber this could result in extraction issue. 30-06 is much longer than the 7.62 so you have a lot of reaming to do. I don't think this idea is worth the risk to life and gun.
The 7.62 round is a straighter case than the 30-06. If you measure a 7.62 at the shoulder you will find it to be around .452. the same area in a 30-06 measures about .442. This would likely leave a groove in a finished chamber.
Do I need to say more?
The 7.62 round is a straighter case than the 30-06. If you measure a 7.62 at the shoulder you will find it to be around .452. the same area in a 30-06 measures about .442. This would likely leave a groove in a finished chamber.
Do I need to say more?
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that is true about the grove in the case I had a 308 garand barrel which was rechambered to 30-06 after it was made with excess headspaced in the finnish reaming process...it is a tanker garand and it shoots just fine although the brass is noticable as it has a line in the middle after firing. It extracts fine in the tanker and I'd bet you'd have no problem in a 1919 with it's massive extractor. The brass reloads just fine also. But 1919 30-06 barrels are not too high priced so it might not be worth the effort. B2B
ORF rechambers 308 barrels to 30-06. If it wasn't 'safe enough', I doubt a reputable dealer would do it. That said, you do get a noticeable ridge on the case after firing them through it. It's a little nerve-wracking to see with all the warnings about headspace and case separation. So, I'll use my original 30-06 barrel before I use the re-worked one.
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