Thanks Eagleye, what I was saying was as you said, but also Win brass weighs 10 grs less than Lapua in the 308, hence it has greater powder capacity, hence better velocities. Never meant to say Win brass was better made than Lapua. But if you bought 500 win brass and 250 lapua brass and weighed and prepped the win brass including flash hole sizing etc. you would end up with 250 Win brass that would be every bit as good as the Lapua and have greater internal capacity, for about the same price give or take.
Again, I agree with the capacity statement. I had an interesting "happening" once when loading for my 7x57 Ruger #1.
I had developed a maximum working load for this rifle, using Norma MRP/Winchester cases/WLR primers and the 160 Partition.
The Chronograph was giving between 2690 and 2720 fps, accuracy was great. No case issues at all.
By some inadvertent miscue, one R-P case got mixed into my Winchester, and it got charged with that same load.
When I fired it across the Chrony, it registered almost 2900, and smoke was curling up from that #1's breechblock.
Underlever opened with a bit of resistance, and the primer promptly fell out of a now oversize primer pocket.
In checking the weight of the two brands, I found the R-P cases were close to 30 grains heavier than the Winchester.
Obviously the lower internal capacity resulted in higher pressures.
You can guess that I quit using the R-P brass in my 7x57 rifles. Nowadays, it's Winchester or PPU, both of which have the same capacity.
Eagleye.