I received 3 boxes of Underwood’s 10mm 220 Grain hard cast ammo a few weeks ago and went to a local range yesterday to try them out. I was a little apprehensive after reading reports on the web claiming high SDs and worries that Underwood was too hot. I have 4 10mms, a 2011, two 1911s and a P220. I figured if any of them would handle the recoil it would be the P220, so I tried it first. No problem. Completely controllable and accurate. Next up was the 2011. If I were to have trouble with one of my 10s it would be this one.. I’ve bulged brass using heavy hard cast with this one in the past. Again, no problem. Brass looks fine. No issues at all. Primers were somewhat flattened which I expected, but no more than normal. Case head expansion was the same as my reloads which are not nuclear: new case .420 fired case .465. All cases compared were Starline. I’ve read that Underwood is using 800X for this load. I’ve always used Longshot, Blue Dot and AA#9, I guess I’ll give 800X a try.
For cost and quality I’d say Underwood is a good buy.
