The 30-06 is actually a mid length cartridge. The long actions are the Ultra Mags and Weatherby, H&H class. The 30-06 is 3.34 long, same as 7MM Rem Mag and that class of cartridge. My Savage M10 in 223, 22-250 and 243 is the short action. The 223 is made in some down sized actions like the Interarms Mark X and the new Savage M25, but most 223 are in short actions. Most short cartridges are available in standard length actions, just the magazine box is shorter.