Blackhole bullets 25cal

Been looking at these for some time. I know berger has there 133s and 135s but it's nice to have other options now that we probably won't be seeing any blackjack anytime soon. And there made right here in Idaho and not bad priced.these are the ones I'm looking at.
145 gr ULD RBT HP $35 @ 50
G1 680

Where did you find the ballistic coefficient of these bullets ?
 
.556 on the .257/130 grain bullet. .64 per bullet plus shipping. Based on 50 bullets. Think I'll stick with what works great right now for me. Berger 133/135 shoot very well and at a lower overall cost. I may pick up a box of 50 for chits and giggles. Haven't played with my Hammers or Cutting edge bullets yet. Hard to move on from what works right now.
 
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