Lee Enfield

infobros

Load Data Eligible SigSaur 1911
Staff member
I found out that cordite is corrosive so you have to clean the barrel after firing any rounds loaded with it, and if you fire enough of them you will probably have some that go "click...boom"!
 

sixshootertexan

Hand Press
I don't plan on firing any. I'll keep them for my cartridge collection.

Ok I looked more into the seating die. It has a floating seating stem. Did not know that on Lee. I guess it doesn't float to good. Still going to get an RCBS die.
 

infobros

Load Data Eligible SigSaur 1911
Staff member
LOL, I had the same problem with mine! I thought it was just me. I seat them, then roll them on the benchtop to check them since I don't have any other way to check concentricity, lol. I've been using IMR 4350 for mine, seems to work well for me. I bought some H4350 but I'm saving that for another project.
 
I found out that cordite is corrosive so you have to clean the barrel after firing any rounds loaded with it, and if you fire enough of them you will probably have some that go "click...boom"!
Cordite propellant itself is not ‘Corrosive’ - it’s essentially very little different than any double base powder you may currently use. It did have a reputation for being ‘Errosive’ due to the relatively high nitroglycerin content of the earliest versions - i.e. it was very ‘hot burning’. Later versions of Cordite had less nitroglycerin but required slightly heavier charges to compensate for the reduced potency of the propellant. It’s still a ‘hot’ propellant by modern standards though.

What can be corrosive are the primers. It’s possible to find old cordite ammunition loaded with both corrosive & non-corrosive primers but the same applies to any ammunition made before non-corrosive primers were in general use - irrespective of the powder.

So don’t worry about Cordite being corrosive - worry about the primer type no matter what propellant is used - this applies to any ‘old’ ammunition particularly military ammunition which tended to use corrosive primers long after commercial sporting ammunition had changed to ‘non-corrosive’. Commercial ammunition made ‘back in the day’ using non-corrosive primers almost always notes it on the box as it was a selling point.

I’ve fired more than a few boxes of original Kynoch .450 Nitro-Express ammunition loaded with Cordite (plus non-corrosive primers) & it works very well but Cordite does heat the barrels up noticeably faster than most other powders do hence the ‘errosive’ reputation. Cleaning of the bore is done as normal.

I would never use corrosively primed ammunition in any rifle though as micro pitting of the bore can start well before the barrel is cleaned initially with hot or boiling water - not a normal bore cleaner (you follow up with those).

Regards
Russell
 

infobros

Load Data Eligible SigSaur 1911
Staff member
Cordite propellant itself is not ‘Corrosive’ - it’s essentially very little different than any double base powder you may currently use. It did have a reputation for being ‘Errosive’ due to the relatively high nitroglycerin content of the earliest versions - i.e. it was very ‘hot burning’. Later versions of Cordite had less nitroglycerin but required slightly heavier charges to compensate for the reduced potency of the propellant. It’s still a ‘hot’ propellant by modern standards though.

What can be corrosive are the primers. It’s possible to find old cordite ammunition loaded with both corrosive & non-corrosive primers but the same applies to any ammunition made before non-corrosive primers were in general use - irrespective of the powder.

So don’t worry about Cordite being corrosive - worry about the primer type no matter what propellant is used - this applies to any ‘old’ ammunition particularly military ammunition which tended to use corrosive primers long after commercial sporting ammunition had changed to ‘non-corrosive’. Commercial ammunition made ‘back in the day’ using non-corrosive primers almost always notes it on the box as it was a selling point.

I’ve fired more than a few boxes of original Kynoch .450 Nitro-Express ammunition loaded with Cordite (plus non-corrosive primers) & it works very well but Cordite does heat the barrels up noticeably faster than most other powders do hence the ‘errosive’ reputation. Cleaning of the bore is done as normal.

I would never use corrosively primed ammunition in any rifle though as micro pitting of the bore can start well before the barrel is cleaned initially with hot or boiling water - not a normal bore cleaner (you follow up with those).

Regards
Russell
Thank you, Russel, I find that I learn something new every time I log in to this forum. I am glad that you have joined us as I find your posts are usually quite informative and succinct.
 
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