We shoot them out of Berettas and SX2,3 and 4s. with either modifies or IM chokes with great results. We also load and chrono speeds up to 1800fps. I do know that some of the "aftermarket" chokes will not hold pattern over 1600fps. Anyway we kill a LOT of birds and go through a lot of ammo in a season and the speed demons work well for us on winter birds.
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"BORN to HUNT"
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