After seeing post on burst barrel I checked the proof marks on my 12 ga - just to be sure so to speak. It has 2 1/2" chambers and according to proof marks is for 1 1/8 oz and 850 bar. This gun was probably manufactured in England sometime around 1900 - 1910. Wall thickness is at least .034 in both barrels.

Does anyone know what PSI 850 bar equates to? I know I saw a post about pressures for different manufacturers for 16 ga recently. A few showed both PSI and BAR. Has anyone seen, or know where I can find similar information for 20 and 12's.

To date I have always used either B&P's or Gamebore's Pure Golds in gun less than or equal to 30g. I think that equates to about 1 1/8 oz or less. My limited understanding is that these loads should be ok. Howevever, nothing on box or web sites reflects actual pressure.

Thanks in advance - I am fond of all my appendages.

Chicago (Mike)