Trevor shot more of the 215's yesterday.
He shoots 10 grs. of Unique ( in 44 Mag brass ) and the 429215 ( sized 4315" ) real well out of his scoped 44 Mag. Handi rifle .
The 1-38 twist is a hold over from the 44-40. These rifles do best with 44-40 like loads. I use this same bullet in my Marlin 44 Mag levergun over 10 grains of Unique. This load does very well in the 1-38 twist.