Nitro Steel...I would strongly suggest that you check out the C&G .500 NE, if you can see yourself coping with such a heavy rifle...what an elephant rifle..!

I have looked for a heavy double for years.....I dislike all the german doubles except the Heym (to expensive for me..)

Finally I had a strike of luck and bought a very nice old english double, a Midland Gun Co. in .475x3 1/4, a lovely balanced rifle at 11 lbs +, luckily it is like it was made for me....for USD 6500,-

A rifle in an oddball calibre from a rather unknown maker, but still a great rifle on the Webley action, dolls head extention.

The bargains are still out there....and british vintage rifles hold their value..