Has anyone here had any experience with the 45/70 caliber rifle on Australian Water Buff? Looks like it's slowly gaining popularity on Cape Buffalo, but get's maligned alot as well. To me, it mirrors the performance of the 450 BP Express in it's standard loading, and equals the Nitro for Black loading of the same caliber in the heavier loadings. John Taylor had no problem with either of these calibers for large dangerous game. Any opinions here?