Originally Posted by POP
1:9 twist . I do not think it will stabilize the short 260. It will stabilize 300-414 gr bullets.
As for the action I quote Builder Dave viers.
I am very surpised that Dave goes with a 1.185" thread diameter on this. Personally, I think this is minimum with the Cheytac based wildcats and with softer button pulled barrels, I have noticed with top end pressures that 1.185 is marginal. Cut rifled barrels are fine.
With the larger case diameter and shoulder diameter I would think he would be recommending 1.250" thread diameters and a minimum of 1.450" shank diameter to control any possible chamber swelling which would result in extraction problems.
Maybe Dave is loading this one to lower pressures then his Snipetac wildcats as I know he loads them pretty hot. Just surprised he goes with this relatively small thread diameter for such a large diameter chambering. He may also only use cut rifled barrels which as mentioned, help a lot because they are simply harder. He may also use a good amount of body taper in his design which would also be needed for good extraction with high pressure loadings and the baring surface on this huge case.
Very interesting none the less.