I will be shooting 600yds and have picked the Berger 70gr VDL bullet cal. 224 as a good compromise between speed and BC. My rifle is a Browning x-bolt Max varmint/target with 26 inch heavy barrel. What velocity can I expect with Varget, CCI 400 primers in Federal and Wolf gold cases? I would appreciate hearing from those of you who have experience with the 223 load.