I have three very low numbered 1903 rifles (all rebuilds nothing original) and have a 30-06 chamber
insert that will chamber 32 ACP, 32 S&W and 32 S&W long. I have not tried the 32 S&W long yet but
the 32 ACP and 32 S&W shoot very well. I will try the 32 S&W long soonP1010016.jpg