Is it the original barrel?
While some were smaller, mine slugged at .318" , but they can be up in around .323+" IIRC.
Mine is the original chamber, so I cast the proper bullet and size to .319" and it shoots fairly well.
Always thought one rechambered to .357 would be the ultimate deadly pool cue. 
I knew a guy who had a Holland and Holland double rifle, originally chambered in 300 Rook, but at some point was redone to 357 Mag. It was just the coolest thing. A little out of my price range. Of course he had some Austrian doubles that I wouldn't shoot, despite his many offers. My fear was in recoil I would drop them on the concrete range floor and I'd have to sell my house to pay for it. No joke… the one time I asked "And what's this one go for?" He said "About two sixty." 
Complete thread:
- A wee off topic, but eye-pleasing... -
John Meeker,
2014-02-16, 21:00
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- Neat... - Rob Leahy, 2014-02-16, 21:41
- A wee off topic, but eye-pleasing... - Fowler, 2014-02-16, 23:24
- Eye pleasing? Those are downright Sexy!!!!! -
Todd C,
2014-02-17, 02:54
- Eye pleasing? Those are downright Sexy!!!!! - Jared, 2014-02-17, 09:43
- "Eye-pleasing" is just the beginning. -
Hoot,
2014-02-17, 06:23
- Is it the original barrel? -
cas,
2014-02-17, 11:28
- Is it the original barrel? - Hoot, 2014-02-17, 12:54
- Is it the original barrel? -
cas,
2014-02-17, 11:28
- Oh yeaaaaaaaaaaaaaaaaaah! I love the Martinis... - Hobie, 2014-02-17, 07:28
- I like all of them, - Jared, 2014-02-17, 09:44