Someone who Likes shooting, and goes to the range just to see how wel s/he can do today, will eventually get better as a shooter, regardlless of what firearm they use.

Someone who enjoys riding a bike will go out and ride, just to be on the bike.

In both cases, the person will improve more quickly if s/he uses a serious training regimen, but it all starts with and comes back to putting rounds downrange or miles on the tires