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RE YOUR COMMENT TO MAC re "If the wood on my gun wont stand the recoil, no would I." I would suggest you look at how some guns are stocked and the actions as some are inherantly stronger than others.

Whats the "GREENER Empire model" - Greener's most widely manufactured model - has a (generally) Round cross bolt -
I mention it as this action is used to build DR's in Australia - see Marrakai's posts or go to his web site, you will see a Picture of a 577 2 3/4" There.

NFB? Nitro for Black / sometimes referred to as Light Nitro BUT do a search. 400NitroExpress and Marrakai would have posted on this subject.

IT IS NOT a FULL NITRO LOAD.