You may be asking the wrong person as I have never owned a DR. I suspect it is for ease of adjustment to get the rifle regulated for your ammo of choice, then a gunsmith may be able to cut that off and file it smooth? Just a guess though.
@mitch4570 - I know that my Chapuis .470 NE had that “wedge” that stuck out 1/4” between the 23.5” barrels. I thought it looked a bit odd but it didn’t bother me, When I questioned about it I don’t recall the “purpose” of it but was told it can protect the barrels from damage - should you bang the tip…. Some others on this forum may have more insight. I will say it was a very accurate rifle and was told above average accuracy for a Double rifle.
Hi I have just brought a used Rizini .470 DOUBLE nitro express it cost me £7000 [$10,000] And is wonderful and i shot my first cape buffalo with it on march 20th this year, the rifle was like new in its box with all the cleaning kit and a aimpoint scope and 30 rounds of ammo thrown in the the deal.
