7.62 bolt head

[englishman_ca]

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?

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[Alan de Enfield]

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?

According to Peter Laidler - "absolutely no difference", and in fact "you could simply use a 303 bolt head with a different extractor. It was a 303 bolt head that was used - just proved to 7.62 pressures".

[Roger Payne]

They're one & the same. If you look at a 19T marked bolt head you'll see some are marked with a C broad arrow &/or LB, some are marked M47C or B, & some are marked F, M or S. In other words, all the original 5 WW2 manufacturers of the No4 rifle.......in .303. The 7.62mm proof is just a later addition.

[Lee Enfield]

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.

[Surpmil]

And someone with skilled TIG welder, a Dremel Tool and some good photos could make a copy of the 7.62mm extractor out of a .303 example which would probably work just fine. Proper heat treatment would be the trick, but not that hard to learn about, or do.

[Scout Sniper]

Somebody is selling custom stainless steel 7.62 No.4 extractors on eBay...

[Bruce_in_Oz]

There's "stainless steel" and then there's "stainless steel"...

Extractors need to be reasonably "wear-resistant" and TOUGH. Hard as glass and BRITTLE is not a good look.

The two "common" stainless steels used in the gun biz seem to be 416, which is commonly used for barrels and bodies, and then there is 440; used for stuff that needs to be somewhat harder. Also used by bladesmiths. Lots of other prospective products in between. Beware the presence of Sulphur in "stressed" stainless steels, especially rolled bars used for barrel-making. The presence of Sulphur in more than vanishingly-small traces will cause nasty grain weaknesses in stuff like 416, especially when used as a barrel steel.

Ruger are the masters of stainless steel in the firearms biz; they are also masters of Titanium casting and fabrication, a whole other level of metallurgical voodoo. Stainless steel springs are another interesting field.

[Scout Sniper]

I just spotted them and thought i would share.

Approach with caution and buy at your own risk, they are not being sold by me just to be clear!

[Patt14 No2]

Have a look at the other items he is listing, I have his No4 No-Gunsmith Mount and it is excellent and well priced, a friend has his Ruger Old Army stainless axis pin and it is superior to the original. He appaears to have a proper understanding of firearms and their parts - I have no connection - just a satisfied customer.

[tr63]

Is there a link to what he is selling ?