This is something I consider quite often when deciding what kind of gun to purchase, what types of different variables go into making the decision based on what things to I want to be interchangeable, have multiple uses, and what is cheap. My current collection is based on being able to exchange either ammo, magazines (or both) as well as reloading considerations. What kinds of ammo, magazine and firearm consolidation do you have or do you even bother?
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