Has there been a post comparing the speeds obtain with the 300SMK in the following pistols:
338 AX
338 EDGE
338 Norma
338 Lapua
338 WM
It would be interesting to see some comparisons on performance.
As others have posted, there are so many variables between barrels, brass capacity, bullet weights (you know they aren't all exactly 225 gr etc), seating depth, primers, lots of powder, altitude, and as Neal said, even accuracy of the chronograph that is taking the velocity readings, and the list of variables goes on and on and on.
Now I am no expert, but I have been able to do pretty well with a program called Quickload to do cartridge/component "what ifs??" And when I have all the variables entered very accurately it will usually produce some pretty amazing results. And by that I mean that when I check the programs projected data against the actual real world data that I get from my chorny, it comes out pretty darn close.
That all being said, I am sure that there are many here on this site who are better at producing this data with Quickload than I. But, if all the input data is accurate, then in my experience the projections tend to be very accurate.
I guess my point is that if someone were to take all the variables for each of the cartridges and put them into the program, you should have a very good idea of which cartridge will do what. And by the way you can also factor in barrel length to make all things "equal".
It would be a time consuming exercise, but I think it would be extremely interesting to see the results.
John