Looking over the 10mm I have on hand - factory loads - found Underwood 200 gr JHP, and Buffalo Bore 220gr HC. The Underwood claims 1250 fps on the box, the BB says 1200 fps. Right now I have an RIA 1911 and two EAA Witnesses - one blued, one "Wondra" finish in 10mm. Would like to try a Sig 220, as I have one in .45 ACP I really like. My handholds are normally a bit "slower" than these factory loads. I am a BIG fan of 10mm in semi-autos as a woods-hunting gun, and I also tend to prefer heavy HC lead bullets. Some time back, I had a problem with some Double Tap ammo in a Glock G20, otherwise 10mm has been "good" for me, both factory and handholds. I have tried Power Pistol, Universal, Unique, and Titegroup powders with no problems.
Mike Holmes
Dang, 220's at 1200 is smoking, I'll happily get by with 200's at 1200 fps in my DW 10mm, would like to see a penetration comparison between those two hardcast weights.
