the MMP HPH-24s work well with .451 bullets. The HPH-12s are too tight. I just tried the 3petal-EZ last Friday and they are too loose. 3petal shot 3 inches high at 100 yards with my Encore PH. I only shoot the 300 grain Speer Uni-Cor soft point.

Have use 300 grain 45 cal. XTPs and they shot well with the 24s. Gun didn't like the black crush rib sabots. I use both FF and FFF T7. Both shoot about the same.