Does anyone use Parker Ballistic Extreme bullets? What has your experience been with them both good and bad. I shot them for the 2nd time yesterday in my Knight DISC Elite .50 caliber and all I can say is WOW. I shot a 5 shot group that went under an 1" at 112 yards. I was using the 275 gr version pushed by 120 gr of BH 209 ignited by a Federal 209A primer. I would like to know about actual field experience on deer size game. I am going to shoot them again next range session to see if I get repeatable results.