DONT USE THE SPSX...they possibly wont reach target...designed for less than 3000fps...or there abouts,they awesome in .223 loaded mild...the 50grn vmax/zmax are dynamite in .22-250....as are the 55grn version...sighted inch high at hundy its point n shoot out to past 200....havent bothered past that yet....the vmax much more explody than factory 55grn winchester stuff.
dont over think it.....if rifle likes load go with it.
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