I shot a couple boxes of them 20 years ago,good for 100-150 yrds top.It seems like i had more flyers with this ammo than reg. ammo. also they were kind of expensive rounds. I switched to a .220 swift for long range still hunting and an AR 15 for when we group hunt coyote. the .223 being much cheaper to shoot with some really good rounds out there for it. The accelerator is a sabbot bullit which will not hurt the barrel , but i wonder if it spins true when pushed that hard. JMO
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