Horsethief
Handloader
- Jul 5, 2012
- 346
- 5
Superformance runs very well with 140 and 150gn Sierra Game Kings. I went "off the ranch" and worked up a load with 150gn SGKs, basing the load off 140s and working up. Pushed over the book limit, the SF ran the 140s at 3168fsp and the 150s at 3120fps. Outstanding accuracy with the 150s at 400 yards, as well as bang-flop results vs Kansas White tail.