prvi brass

You will not find a better case for reloading the .303 British in your Enfield rifles. These cases are .010 thicker in the base web area, have a larger base diameter and have thicker rims than any other brand.

Below both cases were fired in the same Enfield rifle and the larger base diameter and thicker case clearly shows on the Prvi Partizan case.

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I've been using PRVI brass in my 6.5x55 for a long time. Have 8 reloads on some and still in great shape. Great brass. Wish it was more common and available in more calibers.
 
Below on the left a Remington .303 British case with a rim thickness of .058 and on the right a Prvi case with a rim thickness of .062.

Imagine a Prvi Partizan .303 British case decreasing your headspace by .004 without changing a bolt head.

I read somewhere that Prvi Partizan makes their .303 British cases to military specifications and had a contract to supply 3rd world countries ammunition for their aging British machine guns.

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As others have said, excellent brass. They make a lot of different brass - check out their web pages. Some calibers are not carried in North America as the demand isn't there, but might be available from sources such as Mystic Precision. I have been running .223Rem and 300WM which are readily available, as are most popular calibers.
 
This is good info as i was looking at it for 223 to reload for an ar build. I was thinking about buying a case of their factory ammo to plink with then reload the brass.
 
This is good info as i was looking at it for 223 to reload for an ar build. I was thinking about buying a case of their factory ammo to plink with then reload the brass.

If you can get it military 5.56 cases are made of harder brass and have a thicker flash hole web. There is a big difference between commercial .223 cases and military 5.56 cases.

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If I was you I would find a Prvi Partizan case and a military case and section them like above before buying a case of ammo.
 
Wasp munitions still has some IVI in .223 I think. X-reload might be another source. It is available from time to time but primer pockets are crimped and will require swaging or reaming. It will probably also require cleaning and full length resizing. Personally, PRVI/PPU is easier to source, works extremely well and is ready to load straight out of the bag/box depending on amount purchased. I am into the 22+ reloads with some of it and it is getting really close to time to retire it as the primer pockets are getting fairly loose. I'm far from complaining.
 
Part of the early jamming problem of the M16 rifle was soft brass using commercial .223 brass standards. Our American military Lake City 5.56 cases were made of harder brass and all commercial contract ammunition made for the military use this same harder brass.

Below from the book "The Black Rifle: M16 Retrospective".

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How Hard is Your Brass? 5.56 and .223 Rem Base Hardness Tests
http://bulletin.accurateshooter.com/2014/05/how-hard-is-your-brass-5-56-and-223-rem-base-hardness-tests/

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Bottom line I live in the U.S. and buy bulk once fired Lake City 5.56 and 7.62 cases because I'm a cheap bastard and these cases are made Ford Truck Tough.

So buy the hardest brass you can get in Canada for your AR15 rifles, and remember these rifles throw perfectly good brass away and make you go look for it. ;)
 
thanks for you help.ordered a bag to try from tradex. last year i loaded up some 303 ,full re-sized the brass.third round and i had a case seperation.wanted to load some hunting rounds and not worry about that so i am going to use new brass.should i run the new brass through a neck sizer or just load them up?
 
thanks for you help.ordered a bag to try from tradex. last year i loaded up some 303 ,full re-sized the brass.third round and i had a case seperation.wanted to load some hunting rounds and not worry about that so i am going to use new brass.should i run the new brass through a neck sizer or just load them up?

I will bump the necks of new cases over an expander ball just to round them out and lightly chamfer them.
I now use Lee collet neck dies but for many years partially sized using a Lyman full length sizer.
As Bigedp51 illustrates brass makes all the difference in this calibre. I personally found Remington to be the most undersized . I've been using Herter's brass from Higginson's for many years and will switch to Prvi when I deplete my supply.
And as always I segregate the fireformed brass by the rifle I'm using, Ross MkIII , Lee-Enfield #4, 1895 Winchester and Ruger#1.
 
I will bump the necks of new cases over an expander ball just to round them out and lightly chamfer them.
I now use Lee collet neck dies but for many years partially sized using a Lyman full length sizer.
As Bigedp51 illustrates brass makes all the difference in this calibre. I personally found Remington to be the most undersized . I've been using Herter's brass from Higginson's for many years and will switch to Prvi when I deplete my supply.
And as always I segregate the fireformed brass by the rifle I'm using, Ross MkIII , Lee-Enfield #4, 1895 Winchester and Ruger#1.

Try using a small thin rubber o-ring around the rim, this will hold the case against the bolt face and prevent the case from stretching. The o-ring when compressed will also center the case in the rear of the chamber. This will help keep the cases concentric for better accuracy when reloading.

Below no o-ring when fire forming cases, at maximum military headspace of .074 and a rim thickness of .058 you will have .016 head clearance.

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Below the o-ring method of fire forming and the case held firmly against the bolt face.

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I use reduced loads of SR 4759 and then Trail Boss and 100 grain Hornady .312 pistol bullets for case forming. These loads have the benefit of making the brass butt plate softer when fire forming 100 or more cases. ;)

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Below a 50 yard target with the reduced loads above.

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NOTE, I did not invent the o-ring method, some time ago I read about it in a posting by terryinvictoria. So a smart Canadian invented this fire forming method and not me.
 
NOTE, I did not invent the o-ring method, some time ago I read about it in a posting by terryinvictoria. So a smart Canadian invented this fire forming method and not me.
This is good advice and something I've recommended many times to others. I've used Horn .312 pistol bullets for fire forming my .303 Epps cases. I used Unique though.
 
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