I have the 1910 in 401. Very cool guns and fun to shoot. Mine is a tack driver at 50 yards with 250 grain bullets. I bought some of the Qual Cart brass and just picked up some 414 Super Mag to make 401 brass. The Real guns information is good. There is also a forum called Vintage Semi Auto Rifles. Kind on an interesting forum. It doesn't get a lot of traffic but there is some good info there.
Real Guns Vintage Semi Auto 
