Yes...Both barrels very similar in dimension.
*Note: Standard type rifling not H&H ratchet type.

Bore ~.634" choke ~.606".
Differential @ ~.028".
+/- my nominal ability to measure the choke and groves 100% accurately...;-) I know the bore is dead nuts as I do have 2 good bore gauges.

I had two loads to try both had bullets sized to .628. Both loads were designed to be around 10,000 PSI. Load #1 was tagged at 1569fps and load #2 was tagged at 1350fps. Both loads crossed at 50 meters (It's German so I went metric for sighting distance.)
*Note: Each barrel shot very consistently by itself a 2" spread for multiple shots from the single barrel at 50 meters.

Each load produced a composite group with a 6.75" spread and the shots did cross as in left barrel printed 6.75" to the right of where the right barrel hit on target.


Dave Weber
doublegunshop.com
DoubleGun Evangelist
In Charge But Not Responsible