Firstly,boolits matter farrrrrrr more than headstamps. Secondly,"Logic" would NEVER lead one to a 9-lugged MK V...if only for starters. If you just gotta do a [bleep] Weatherby,go VG and thank me later. Hint.
Now if only for conversation and because I may have yerked a 257Wby trigger or two and mebbe even shot out a barrel or 5 in the chambering.(grin) The 257Wby in the Pre-LRF Ping Pong Ball BC Days was a rather nice way to fly. Why?!? Simply because it hauled major ass and if you GOTTA fling Ping Pong Balls(because that is all there is),then you need to hedge a bet by putting some sizzle on 'em. It was a far better chambering 20yrs ago,when boolits was closer to "equal" and handy/dandy LRF's didn't exist.
Fast forward to Today. No other diameter is as maligned boolit wise,as the Quarter Bores. Like it,lump it,bitch,moan,whine or complain...dat's a sad fact.
For conversation a 257Wby launching a 100 TTSX at 3750fps and wearing a 250 zero,drops 2.4MOA at 400 with 2.8MOA of 10mph full value wind.
600yds -6.8MOA ele,4.6MOA wind,2100fps of retained velocity and 981 pounds of "energy".
800yds is -12.8MOA ele,6.8 wind,1676fps and 623#.
1000yds is -21.3MOA ele,9.6MOA wind,1326fps and 309#.
1200yds is -33.2MOA ele,12.8MOA wind,1089fps and 263#.
Now if only to look at schit differently and in a more forgiving manner,replete with inherent mechanical advantage(s).
A lowly Rem 700 243Win will scoot a Hornie 105 HPBT to 3000fps. Hint. Wearin' a 250 zero,drops 3.4MOA at 400 with 2.3MOA of full value wind. (Note: it has the wind drift advantage inside the 100yd line and retains it to as far as you care to hurt the 257Wby's feelin's.)
600yds -9.1MOA ele,3.8MOA wind,2009fps(it's cut the 750fps velocity advantage to 90fps) and 941 pounds of "energy"(40# less than the 257Wby).
800yds is -16MOA ele,5.4MOA wind,1728fps and 700#(50fps advantage and 75#+ over the Weatherby...which will get uglier).
1000yds is -24.7MOA ele,7.3MOA wind,1479fps and 510#.
1200yds is -35.5MOA ele,9.4MOA wind,1271fps and 376#.
Just sayin'.
Hint.(grin)
