I am trying to decide between a Colt 1903 and a 1908. Other than the caliber difference, are there and frame or grip size changes between the two? As a reloader, 32 caliber will not be an issue after I fire quite a few factory rounds. I know the 1908 is a 380 and the 1903 is a 32. This is why I am questioning the frame and grip size changes between the two. Which would you choose? Thanks.