My prefered weapon for personal protection is the 9mm. My carry ammo is the Winchestar 127gr 9mm +P+ which I carry all year round. I have read where some people will go to a lighter weight in the summer and switch back to a heavier round in the winter.
Can anyone tell me why. I feel it does not make a difference but explian to me why you or the person you know if you have had this conversation with them does this.
I am not limiting this to 9mm.