I have the S510 Ultimate Sporter as well as the Hunstman Revere, BSA R10SE, and a Brocock Sniper XS HP. Of all of them only the S510 made the advertised power out of the box. All of my other rifles needed to be tweaked a little to make advertised power. The S510 gives the more powerful Sniper a run for its money at 80-85 yards, that's as far as my home range currently goes. The side lever action of the S510 is the best of all of them, and the magazine is the simplest as well. Only the fill probe banjo thingy is a pain. I hate it, but I would never discourage anyone from buying one. At $1,700.00 I think it is safe to classify it as "high end".
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