What is the best Semi-auto sniper rifle money can buy ?
Must be reliable and very accurate with high capacity magazines.
No price limit .
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Although your question is not conducive to serious answers because of lack of details, I will say this:
An LMT MWS with a Krieger or Bartlein barrel converted to fit would be the one I would want for my purposes.
Other options include the Larue OBR, GA Precision GAP-10, and KAC’s offerings.
Dude, you are on a hazardous path right now.