Subs chainfire too. I know of one anyway that chained with 777 that never chained with real bp. Bp doesn't give lower velocity than subs except for 777 at least not to my knowledge. I never chrono'd any of it but 30 grs. of Pyro doesn't feel as strong as 30 grs. of real bp to me. Yeah you get more shots with subs, 30% more with Pyro by weight but not by cost. So it's actually cheaper to use bp if you can get it. From what I gather bp is now around 11.00 per pound. I pay 16.00 for Pyro per pound and 777 is 26.00 per pound.
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