Hi Michael and welcome. BPI handles Customer Service for CVA. They should be able to answer this at 770-449-4687 or by online inquiry here: https://powerbelt.bpishopping.com/contact --------- Cheers and stay safe!

The barrel diameter on a CVA Scout .45-70 rifle is typically .452 inches; this corresponds to the standard .45 caliber diameter used in the .45-70 cartridge.
Key points to remember:
Caliber vs. Barrel diameter:
While the cartridge is called ".45-70", the actual barrel diameter is slightly smaller at .452 inches to ensure proper bullet fit.
Slight variations:
Depending on the specific model and manufacturing tolerances, there may be minor variations in the barrel diameter.

Hi Michael, I would ask CVA direct. Email sales@cvariflesusa.com or via the web here >>> https://cvariflesusa.com/contact/
Stay safe & have a great day!