How do u make 338 Edge brass?
- Thread starter IH8120
- Start date
Run a .300 Ultra-Mag case over a .338 tapered expander ball.
or
Run a .300 Ultra-mag case over a Sinclair .338 expanding mandrel.
or
Take a 300 grain SMK and .300 Ultra-mag case and just ram that puppy in there useing the .338 seating die.. I'm not makeing this up.
I can't honestly say that one method works any better than the next. Every method that I've used resulted in horrendous runout for the first loading. The first fireing straightens everything out. Oddly, the 10-15 thousandths run-out loaded ammo proves capable of grouping 3-5 inches at 800 yards.
or
Run a .300 Ultra-mag case over a Sinclair .338 expanding mandrel.
or
Take a 300 grain SMK and .300 Ultra-mag case and just ram that puppy in there useing the .338 seating die.. I'm not makeing this up.
I can't honestly say that one method works any better than the next. Every method that I've used resulted in horrendous runout for the first loading. The first fireing straightens everything out. Oddly, the 10-15 thousandths run-out loaded ammo proves capable of grouping 3-5 inches at 800 yards.
Im using a set of 338 edge dies from Defensive Edge.
I dont get any crazy runout on my cases.
With new cases, I only run the expander ball through the neck, I dont touch the shoulder at all.
With the second pass, I run the brass through the full length die but using only the small decapper pin which doesnt touch the neck.
I picked up the technique from the Defensive Edge reloading dvd.
I dont get any crazy runout on my cases.
With new cases, I only run the expander ball through the neck, I dont touch the shoulder at all.
With the second pass, I run the brass through the full length die but using only the small decapper pin which doesnt touch the neck.
I picked up the technique from the Defensive Edge reloading dvd.
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You can use 338 RUM dies as well. Much cheaper. Just make sure when you full length size you don't got down too far. That will ruin the brass. Then just kneck size after firing.
Eventually I am going to spend the money on a set of 338 Edge dies but right now this method works fine for me.
Eventually I am going to spend the money on a set of 338 Edge dies but right now this method works fine for me.
You can use a .375 Ultramag FL die with the stem removed as a body die, and just keep doing what you're doing. In at least one case you would be better off.
Many of the early 'Edges were chambered by simply running a .338 Ultra-mag reamer in an extra 100 thousandths. That's fine as long as you use a pure neck die or shoulder bump with a .338 Ultra FL die, but a problem can arise if this rifle happens to meet a proper set of .338/300 Ultra dies. The .300 Ultra shoulder is actually 11 thousands smaller than a .338 Ultra's, and when the bigger expanded shoulder meets the new tight die the transported brass has to go somewhere. The body may or may not handle the the extra massageing without buckleing and showing what looks like body dents. My first set of custom dies made a trip back State-side to make the mods.
That's the joy of wildcats. You gots yer standard non-standards, and yer non-standard non standards.
If I were starting with a clean piece of paper it would probably just be a .338 Lapua.
