L42/Enforcer Ammunication

[Enfield Enforcer]

Hello altogether,

a lot of reactions - thanks ! Especially to the Advisory Members and the"old members" f.e. Lee-Enfield, Alan de Enfield, Roger Payne, Daan Kemp, Gee-Ram, Bindi2 and more. Now it is getting still more complex, it contains quite a lot of factors and details.. On other sources in the Web, too.
At first for safety purpose 😊 of course :
I think we have to take it step by step, to get an usable overview: To summarize we must say - our Lee-Enfield No.4 Conversion in 7,62 mm Nato will work best with ammo within a pressure of under this 53'000 or 55'000 PSI ? Different information i saw also to that, therefore the ? Of course only with a rifle in good - checked - condition.

As second we can - or must, depending on the ammo availability - reload or give the order to reload to somebody, in my case. The goal then must be to produce loads with military brass - and of course - corresponding bullet- and powder-combinations. As explained for example in S. Redgwells good publication: Reloading of 7,62 mm military Brass: Target Loads. Of course then by always carefully loading step by step for the 27,5-inch Enfield Matchbarrel. With reduced powder charge, not the commercial loads.
And then it s h o u l d be possible to reload even with 168 or 175 gr-Bullets to reach a high crosswind resistence - and - a range of 700 Meters ca. at the same time.

Greetings Enfield Enforcer

Information

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[Alan de Enfield]

Greetings Enfield Enforcer

I'm very interested to see the picture in your avatar.

It is my picture of my Enforcer No 134.



Another picture by the same window.

[Surpmil]

Hello altogether,

a lot of reactions - thanks ! Especially to the Advisory Members and the"old members" f.e. Lee-Enfield, Alan de Enfield, Roger Payne, Daan Kemp, Gee-Ram, Bindi2 and more. Now it is getting still more complex, it contains quite a lot of factors and details.. On other sources in the Web, too.
At first for safety purpose 😊 of course :
I think we have to take it step by step, to get an usable overview: To summarize we must say - our Lee-Enfield No.4 Conversion in 7,62 mm Nato will work best with ammo within a pressure of under this 53'000 or 55'000 PSI ? Different information i saw also to that, therefore the ? Of course only with a rifle in good - checked - condition.

As second we can - or must, depending on the ammo availability - reload or give the order to reload to somebody, in my case. The goal then must be to produce loads with military brass - and of course - corresponding bullet- and powder-combinations. As explained for example in S. Redgwells good publication: Reloading of 7,62 mm military Brass: Target Loads. Of course then by always carefully loading step by step for the 27,5-inch Enfield Matchbarrel. With reduced powder charge, not the commercial loads.
And then it s h o u l d be possible to reload even with 168 or 175 gr-Bullets to reach a high crosswind resistence - and - a range of 700 Meters ca. at the same time.

Greetings Enfield Enforcer

it may have been said already, and hopefully is not an insult(!), but to avoid all risk of damage to the rifle, ensure the chamber is completely free of oil & moisture and the same with the ammo.

[Enfield Enforcer]

Hello Alan de Enfield,

I'm a bit surprised to read this here... Because I'm not sure where I found this picture, originally. Therefore the same goes for the copyright-remark. It's some years ago, in any case. Sometimes we saw a copyright information resp. ban during the search, but sometimes not.

Be assured, it's not my intention to break this right. I will therefore replace my avatar with another similar picture, later. Thanks.

Best regards
Enfield Enforcer

[Enfield Enforcer]

Hello, concerning this pressure question: my Enforcer has the 19t-Proofmark. To which pressures we may load now, concrete ? I saw different infos, it is really irritating.. .

Thanks.

Best regards
Enfield Enforcer

[Alan de Enfield]

Hello, concerning this pressure question: my Enforcer has the 19t-Proofmark. To which pressures we may load now, concrete ? I saw different infos, it is really irritating.. .

Thanks.

Best regards
Enfield Enforcer

With 19T proof testing you should only use the original NATO 144 grain - 155grain ammunition.
If you want to use other 7.62 then you should have the rifle re-prooved to 21 tonnes.


NRA Safety Notice re No 4 7.62mm Conversions
This is the current stance of the NRA safety warning which first appeared in the Summer NRA Journal:
Safety Notice
Enfield No 4 Rifle Conversions to 7.62mm

A safety warning concerning the use of Enfield No 4 Rifle actions converted to 7.62mm was published in the Summer 2010 Journal.

After further consideration of all factors influencing safety of these conversions and consultation with the Birmingham Proof Master, the following advice must be adhered to in respect of the use of Enfield No 4 conversions:

• Owners of Enfield No 4 actioned rifles converted to 7.62mm currently proofed to 19 tons per square inch are strongly advised to have them re-proofed to the current CIP standard (requiring a minimum mean proof pressure of 5190 bar) which allows the use of CIP approved ammunition with a Maximum Average Working Pressure (MAWP) of 4150 Bar.
• Conversions retaining their original Enfield barrel or a replacement barrel as manufactured by RSAF Enfield are safe to use with commercial CIP approved ammunition, which complies with a MAWP of 4150 bar, loaded with any weight of bullet, providing they carry a valid proof mark, and are still in the same condition as when submitted for proof.
• Conversions fitted with any other make of barrel (such as Ferlach, Maddco, Krieger etc) should be checked by a competent gunsmith to determine the throat diameter of the chamber/barrel fitted before use.
• Conversions where the throat diameter is less than the CIP specification of 0.311” but not smaller than 0.3085” must not be used with ammunition which exceeds 3650 Bar MAWP when fired in a SAAMI/CIP pressure barrel.
• Conversions which have been checked and found to comply with Rule 150 may safely be used with any ammunition supplied by the NRA including the 155 grain Radway Green Cartridge, 155 grain RUAG Cartridge or any other commercial CIP Approved cartridges loaded with bullets of any weight provided that the ammunition pressure does not exceed 3650 Bar when measured in a CIP standard barrel.
• Owners of Enfield No 4 actioned rifles converted to 7.62mm who are uncertain as to the proof status of the rifle should have it checked by a competent gunsmith.
• Owners of Enfield No 4 actioned rifles in any calibre are strongly advised not to use them in wet weather or without removing all traces of oil from action and chamber prior to shooting.
• Enfield No 4 rifles which are fitted with a barrel which has a throat diameter less than 0.3085” must not be used on Bisley Ranges.
• Ammunition loaded with bullets of any weight which are of greater diameter than the throat diameter of the barrel must not under any circumstances be used on Bisley Ranges in any rifle or barrel of any manufacture.

[Enfield Enforcer]

This pressure: if for the Enfield Enforcer it is not the NATO value of these 60,190 PSI, that would be the 62,000 PSI and 4150 bar of the .308 Win. much too close and because the 19t-proof-test is supposed to correspond to 3650 bar, what is this relationship to the 4150 bar ? How much PSI is it ultimately ? Finally, I have to be able to inform the commercial reloader of this upper limit. A new proof testing is rather unrealistic, I'm afraid.

So it should be 3,650: 4150 = 0.87951807, i.e. around 87.9% of the NATO value above. That would mean that is 0.87951807 of 60'190 bar = 52'938.1927 PSI. So around 53,000 PSI - is that right now ? I need a realiable value, here. Second best-solution ? A combination of this 55'000 PSI-Surplus Cases-Limit and 53'000 PSI System-Limit, in other words ?

Greetings
Enfield Enforcer