Thanks for all of the replies....
I thought I read somewhere that there are higher pressures generated with the A-Frames compared to other similar weight bullets.....something to do with with the metal composition of the outer cup..... which would explain the need for less powder for similar weights.... Glad I asked as I'm VERY new to reloading and a little nervous at this time
Thanks again....
Yes, the A-Frame's drag through the rifling seems to be greater than other bullets. Maybe if Swift added more grooves to the A-Frame, then velocity could be increased. But as it is now, just follow the Switft reloading data. The Swift factory loads with the 210-grain Scirocco (tipped) is a little over 2,800 fps.
Probably because of the same reasons, all A-Frame bullets are loaded by Swift's data around 75 fps slower than other bullets. For example, below 2,600 fps for the .338, 250-grain A-Frame. It is the same for all other cartridges.
