Re: Opinions wanted......
Some facts about the 190 SMK and the 155 Scenar.
190 SMK = 1.365" long (average).
190 SMK published BC = .533
155 Scenar = 1.280" long (average).
155 Scenar published BC = .508
So as you can see, the 155 Scenar is shorter than the 190 SMK and the 190 SMK also has a higher BC than the 155 Scenar.
Out of one test rifle I found the Scenar bullet to match my RSI program (I am using RSI in this case for an un-bias comparison) on the G1 scale at .499 and the 190 SMK at .564 G1. I have yet to test these in my 300 RUM 12 and 11.27x barrels.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.