GSC Bullets has a 309 grain .338 SP bullet posted on their web site. It has a listed G1 BC of 1.216. Can any one confirm this BC? It also shows a twist rate of 1:8 or faster. Has anyone ever shot any of these bullets from a 338 Snipetac, Allen Mag, Baer, ect? Also If I'm looking at the purchase page correctly, from the US distributor, the price to my door is $380.00 USD for 25 bullets.