- Mar 6, 2008
This is a thread for discussion of the article, 6mm Turbo 40 Ackley AR-15 Review, By Robert Whitley. Here you can ask questions or make comments about the article.In recent years, there has been a huge increase in the number of 6mm wildcats being shot out of AR-15’s. This movement was started and driven forward mainly by across-the-course high power shooters that have to compete at ranges out to 600 yards where wind drift can become a big problem. The existing commercially produced 6mm match bullet lineup has bullets that have a significantly higher ballistic coefficient (b.c.) than is typically available to those shooting with the .223 Rem. (or 5.56 NATO). For instance, the age old standard 600 yard loading for the .223 is the Sierra 80 gr. MatchKing bullet that has a b.c. of only .420, but the current 6mm Berger 108 gr. BT bullet has a b.c. of .546 and the 6mm Berger 105 gr. VLD bullet has a b.c. of .556. On a windy day at 600 yards the bigger 6mm bullets can be affected by the wind significantly less than the .223 Rem. counterparts. Read More...