You are a braver man than me. I still own some nikons but only because they were cheap and they are one of the few that make a good, low profile rimfire scope. If it were my money, I would buy something, anything other than another Nikon. Vortex, Leupold, maybe a burris but unlikely.
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Varmint Rifle Stable
-Sako 85S SS Varmint .22-250 Rem Vortex Gen II Viper PST 5-25x50
-Sako 85S SS Varmint .243 Win Leupold VX-3 8.5-25x50
-Mini Mauser Douglas 26" .223 Rem Leupold VX3i 6.5-20x50
-Sako A7 Coyote .223 Rem Leupold/VX3i 3.5-10x50 CDS