I have been researching BlackHorn 209 and I am finding that it appears to be kind of on the upper end of the pressure range for BP cartridges, an example being about 27000 PSI for one 45/90 load (400 grn cast IIRC). Am I wrong? Sounds quite high to me but then I am not sure about how much pressure a full case of the real black would produce with the same 400 grn bullet. If this is true it would seem the volume for volume use rate would produce higher pressures than true BP, at least in some loadings. Any thoughts on this?