Rhea Cole
Lt. Colonel
- Joined
- Nov 2, 2019
- Location
- Murfreesboro, Tennessee
The early 10# Parrotts fired a 2.9"round and it wasn't until the Union standardized the rounds for the Parrott and 3" Ordnance Rifle to 3" that the Parrotts were bored to 3" in about 1863 if I remember correctly.
The outward difference is a muzzle swell on the 2.9".
