Clarifications:
the original rifle was marked on the barrel as a 45/70 and when the chambers were extended to .45-90, I had the 70 changed to a 90.
Shooters familiar with the 45-90 rifles will know that they also shoot the 45-70.
We now have our barrel mounted chrony tested on a small centerfire rifle and will next use it on my 45-90 DR to test velocities of 45-90 ammo and 45-70 ammo.
Since the 45-90 regulation is very good even out to 100 yards, I will soon experiment to find the velocity at which the 45-70 ammo will regulate.
