I have a couple questions about some chrono results I got the other day. I was testing 155gr GDHP and 200gr BT hard cast, both over 800x. I shot two strings each of five rounds through a Pact chrony set up the recommended distance away (I think it was 8ft). Both were loaded to an OAL of 1.250. Is it normal to get an extreme spread this large? What about the standard deviation? 155gr, 10.6 gr 800x, factory barrel String 1/2: Average: 1367/1366 High: 1407/1391 Low: 1348/1334 ES: 58.9/56.8 SD: 24.2/23.6 AD: 17.8/18.5 200gr, 8.6 gr 800x, 6" KKM barrel String 1/2: Average: 1271/1263 High: 1299/1280 Low: 1242/1244 ES: 56.4/36.1 SD: 20.0/15.4 AD: 12.2/12.1 Thanks for your thoughts.