Hi Zedn a lot of new bottles of gas and filled to a higher pressure to give you more gas in a given size of bottle they also charge you more for it. The down side is not all regulators can handle the higher pressure . check with your gas supplier on the correct pressure reg. I have had acouple of the diaphragm go on my regulators because of the higher pressure. its a trap higher pressure more cost for the gas and a new reg.
Oz..
I went out and bought a new reg today and its all good now.
Ozvenom, the guage shows the bottle was just under 15MPa, label on bottle was 15.5MPa. Not sure if thats a lot or not. The regs i looked at today specify up to 20-25 MPa.