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In the old Jouster forum I think it was Terry in Victoria who brought a noted Canadian National Enfield shooter into the forum to post his comments and answer a few questions.
1. Was this shooters name Jim Bullock?
2. Did this shooter say he re-chambered his .303 Enfield’s using a .308 chamber reamer to a wildcat cartridge .303/.308 (.303 bullet and .308 Winchester case)
3. Did anyone remember to copy these postings?
Here is an article written by JB on 308's
http://www.smellysmleshooters.net/ammopressure.htm
Thanks Alan I had the Smelly SMLE Shooters bookmarked for some time, what I’m looking for is exactly “who” and “what” this person said about .303 cases.
I thought he said he re-chambered his Enfield’s to use .308 brass because of the poor quality of currently made SAAMI American made .303 British cases and reloading them.
If it was Jim Bullock then he was also involved in pressure testing .303 ammunition and the information he posted would be very interesting to read.
Look at the current load data from Hodgdons with their lower chamber pressures, the Enfield is rated at 45,000 CUP or 49,000 PSI transducer method.
Below from 2008 Hodgdons annual reloading magazine.
https://www.milsurps.com/images/impo...dgdon303-1.jpg
Ed the varget numbers are exactly the same as the ADI data (2208 no pressure) with the pressure included in Hodgdon
Bindi2Quote:
Originally Posted by Bindi2
Your Australian ADI company is making some of the “new” DuPont IMR series of powders, it has the same loadings and pressures as the photo above.
Remington and Winchester .303 British factory loadings are approximately 43,000 CUP and lower which is the same pressure loading for the first smokeless powder loading of the Enfield rifle at 17 tsi.
H4227® (AR2205)
H4895 (AR2206H)
H4198 (AR2207)
Varget (AR2208)
H4350 (AR2209)
And Hodgdons is owned by General Dynamics who makes the other half of the old DuPont IMR line of powders in Canada and also owns the Winchester line of ball powders.
Below Hodgdons MSDS sheet for their powders.
MSDS
So we are getting higher velocity for lower pressure using 2208 or other powders than cordite.
Can you do that? I thought that the base of the 303 round was larger then the base of the 308 cartridge?Quote:
Originally Posted by Edward Horton
Quote:
Originally Posted by Gibbs505
The .308 Winchester base diameter is .470
The .303 British base diameter is .455
Please note that even our American beer cans are larger than Canadian beer cans.
American 12 fluid ounces equals 355 ml
Canadian 12 fluid ounces equals 341 ml (12 imperial fl oz/341 ml)
And sadly even your Canadian coffee cups are smaller but that’s because that side of the family stayed loyal to King George. :rolleyes:
https://www.milsurps.com/images/impo...imhorton-1.jpg
Sorry Bindi2 I use Hodgdons BL-C (2) a double base powder like Cordite which is actually Winchester WC846 and I get higher velocities with lower chamber pressures than Varget-2208. :rofl:Quote:
Originally Posted by Bindi2
https://www.milsurps.com/images/impo...ySharps3-1.jpg
I used 2208 as an example. So if i could measure pressure and load to it the 303 would be equal to and more likely superior to the 7.62 NATO military load that replaced it. I remmeber the sales pitch to the rifle clubs what a con
Bindi2
I was just pulling your leg because you said “Cordite”, all early powders burned hotter than the powders we have today. Even today many of the powders used by the U.S. military are double base powders like “Cordite” which some people still think are barrel burners and cause excessive erosion.
Your Australian ADI powders have a very good reputation for temperature stability and have replaced the original DuPont IMR line of powders which speaks volumes in itself.
My main point in this posting deals with the Globalization of firearms companies, and company profits having priority over making a quality .303 British cartridge cases. My main point being why does American made .303 cartridge cases stretch and thin in the web area when Greek HXP .303 cases do not stretch and thin.
Bindi2, I bought 500 once fired Greek HXP cases from Brian Dick that were fired in many different rifles and machine guns and NOT ONE HXP case had ANY measurable thinning in the web area.
This is why I asked “who” made the posting at the old Jouster forum and “if” he actually did rechamber his .303 Enfield’s to accept stronger and higher pressure rated .308 cases. This just might be a mute point if the flow of Prvi Partizan .303 cases stay readily available. It just seems strange that Serbia a country that was part of the old Yugoslavia and an ex-communist country can make better cartridge cases than we make here in the U.S.
Below a commercial American made SAAMI .303 British case next to surplus South African military .303 case.
https://www.milsurps.com/images/impo...thicker1-1.jpg
https://www.milsurps.com/images/impo...thicker2-1.jpg
https://www.milsurps.com/images/impo...thicker3-1.jpg