| AkMike |
| (.416 member) |
| 17/06/08 12:37 AM |
Re: Army Navy .450......Nitro or BP?
|
Look at the proof marks on the watertable of the reciever and the bottom of the barrels for the proof marks.
Here's what to look for.
https://store.bluebookinc.com/Info/PDF/Firearm/Proofmarks.pdf