Hi, wondering if anyone here has used the newer 155 Grn Sierras 2156? I have been shooting the Sierra 175 MK out of my 1 in 12 twist 308, but just am not getting the tight groups I know the rifle is capable of. Someone I know who does a ton of PRS shooting suggested the 155 Palma for my rifle, saying its BC is fairly close to the 175 and if pushed around 2800 ish will do better at distance than the 168 SMK. Thoughts? I ordered a box and will be trying it with Varget.