A fairly well-known practice within the concealed carry community is to have a winter gun and a summer gun. The idea is that winter brings more layers, which makes concealing a larger pistol easier AND may require a bigger bullet to penetrate the target. Conversely, summer requires dressing in fewer layers and thus a smaller pistol is required for easier concealment and ease of carry.. Continue reading at:
http://aliengearholsters.com/blog/do-you-have-a-summer-gun-and-a-winter-gun/