[quote=gunluvr.Can I shoot 2.5in RSL SHOTSHELLS in it safely It has all kinds of marks on the water table I can't read. Thank You!
H [/quote]

You would need to provide more detail as to the condition of the gun, if it has Damascus barrels & the condition of the barrels for even an educated guess as whether it is safe to fire.

Here is link that may help with the proof marks


I have become addicted to English hammered shotguns to the detriment of my wallet.