Originally Posted by 338Tejas
How many firings of 338 LM at $2.79/per can you get at max pressure?? I have never shot a .338 LM so i have no idea.
My original point that caused you to disagree was that if you can only get 4 or 5 firings on the $.75 - 1.09/per of the Remington 300 Ultra Brass.
I would think you should be able to get 3x the firings on the 338 LM brass because it is 3x more expensive and no doubt better brass. Is that a correct assumption? If you can't get 3x the firings, then how can you disagree that the Remington Brass isn't more economical to shoot?
I am running my STD .338 LM at max pressure with 300 gr bullets. 1/2 gr more will produce definate ejector marks and firm bolt lift. I have been there a few times. Even by over pressuring the brass I am still on my first 100 pcs of brass. Every one loaded and shot right at max pressure. I have close to 1500 rounds through the rifle. So some of the brass has 15 firings, some 14. All still have consistantly tight primer pockets and accuracy is good as day one, 1/2 moa to 1400 plus yards. I am keeping a close eye on this brass as far as wall thickness. It still has .0005" or less wall variance above the web. It is still going so yes, it will go 3..4.. 5 or more times longer as far as my experience with it.
Running the same load in a 338-300 rum showed me 3 firings or less from REM brass and the primer pocket were already loosening at 2 firings. This is why I disagreed that a Lapua is more costly to shoot. The initial out lay of cash is more. But in the end the Lapua is probably cheaper and you get quality brass to boot. Now the cost to build one will be higher if you intend to use a factory action. But in a full custom they cost the same to build.
I like both of these chamberings and they are very close ballistically. But the myth that it cost more to shoot a 338 LM is simply not true in my world and I have shot both enough to have made up my mind with first hand data.