Looking for information on the projectiles used in the U.S. Coast Guard M1903 Springfield .30 caliber rifles converted to line throwing use.
Brophy’s 1903 Springfield book has some limited info.
Does anyone have copies of the USCG documentation on these guns and especially on the these projectiles, either the solid type, or the later buoyant types?
I especially need dimensioned drawings, or better yet, a source for any projectiles (even damaged ones) and some of the shot lines.
The commercial .45 caliber line throwing guns (trapdoor Springfield or single shot top break Coston or Bridger types) and projectiles seem to be more common, but I have not been able to find specifics on the USCG .30 caliber versions.