Hi,
I want to build a 12 bore rifle using a large frame martini action as I can't find a Greener GP available at the moment (for sale that is). However I can get a martini action for next to nothing. Is there any reason that a GP would be more desireable to use other than the posibility of making a switch barrel arrangment.

On a side note can anyone tell me about the accuracy of the Pacnor 1-20" barrels. I know the twist rate is way to fast but they are easy to deal with on exports to Australia.