The reason I was leaning towards Hornady brass in my statement is for 2 reasons:
1. Odds are if just bought a 100 BA in .338 LM, the first ammo you bought was Hornady, because it is cheaper and more available.
2. I've dealt with a lot of complaints about these rifles over the years, extraction, ejection and brass issues.....and they all seem to disappear when something other than Hornady ammo and brass is used.
Frank is correct about the cases being different. Below are 4 different cases I sectioned to show the difference in case head construction.
As you can see the Lapua has the thickest case head at .270" thick, while the Hornady is .247". Looking closer you will notice that the Lapua has a bigger radius in the corner compared the smaller radius in the Hornady. The Norma has the thinnest case head, but a much larger radius. Graf has slightly larger radius than the Hornady, but a thinner case head at .237".
If I were to wager which 2 cases were the strongest, it would be Lapua and Norma.......or I could be wrong.
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