Not much to add regarding the MSM. Just an observation from using many 7's
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the front one is a 28 Noz, with a 25" proof barrel, witch best's the one behind it, a 7wby with a 24"bart' by 100fps, the wby best's the last one, a 7 rem with a 26" krieger by 50fps. (all with 195's).

with barrel length in consideration, they all do the same damn thing (the rem is long throat)..the MSM would fall between the 28 and 7wby, witch would equate to something like 1/4-1/2 moa difference between the whole lot of them at any given range.

the mag 7's are pretty alike, not to piss on the MSM thread, its a great cart.. just an observation. I like them all! I will own a MSM someday, pry when the rem needs a tube smile