Quote Originally Posted by englishman_ca View Post
I have questions for which I think that I already know the answers.

The No.4 rifle in 7.62. Along with the special barrel and recalibrated sights, it was fitted with a special extractor that had a longer reach claw for the rimless cartridge?, a longer ejector screw?, and a bolt head that was proofed to 19T?

My question is regarding the bolt head. Was it anything different than a regular 303 unit proofed at a higher pressure?
The DCRA 7.62 mm conversions were sent back with:
1. the C.Mk3 .303 calibrated sliding rear sight
2. the .303 extractor
3. the .303 magazine

If you are using the rifle as a single shot, the .303 extractor works fine, it will not eject the cartridge however.
.303 extractors can be modified to work better for ejection purposes- but a .308 extractor is a much better tool.