Quote:
Originally Posted by cigarmonkel
Bob i would start with the .40 and see if its for you before you jump into 223/556 or both. Pistol is easier to reload. The case brass for pistols won't expand like rifle brass will. As long as your OAL for your .40 is good to go the entire round should be good to go. You can save some money so you don't have to buy a brass trimmer and primer swag for your 556 that way. If you like/enjoy reloading then you can go get the proper equipment to reload for your 223/556. Unless money aint no thang then do both!! 
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Anything with a straight wall or not bottle neck shape is pretty easy to load. If you start with new brass you should be able to get two or three reloads before the brass becomes measurably longer. Watch for discoloration just above the bottom crimp or primer plate. This
could indicate the brass may be weakening. get the manual first determine the loads you want to experiment with. If you really start getting into it you can learn the math for the chamber pressures and how it effect accuracy.