I don't really know what to expect with the 38-55, the Lyman 48th lists <1600fps loads with PB cast bullets, but pressure is less than 25kcup, dunno what I can do going above that in 38-55 brass, may have to use .375 brass for exceeding those pressures. I compared the 2.125" 38-55 Starline brass to .375 Winchester brass which is considerably shorter, but weighs 152gr compared to 135gr for the Starline, so it's definitely much stronger brass.
Tim