I have two BPCR's and 70gr 2f BP and a 500 gr bullet averages 1110fps with a 6fps difference. a 450 gr with 65gr BP averages 1155fps with a 5fps difference. I do shoot smokeless in both but the accuracy is not quite as good and the fun is not as much but that is just me.PS both were loaded with a .023 card under the bullet and compressed 1/4"
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Freightman
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