For what it's worth,
I reload .454Casull and the manual lists COL 1.765" and I have trouble loading them in my Freedom arms Revolver. I set my COL to 1.760 and then they drop right in. And I do not shoot .45Colt in the .454 cylinder. I have both cylinders if need be.
For the message of the Cross is foolishness to those who are perishing, But to us who are being saved, It Is The Power Of God. 1Corinthians 1-18