Macchina
Member
- Joined
- Nov 14, 2006
- Messages
- 998
I shot 30 rounds of 158 grain Hornady XTP's over 15.5 grains of H110 with magnum primers and a tight roll crimp out of my 4.2" SP101 the other weekend and was not impressed with the accuracy. I would have blamed myself, but my brother-in-law who is a very good competitive shooter had fired half of them and got the same results. There was also a significant amount of copper in the barrel.
Groups were about 4-6 inches at 8 yards. Is H110 in .357 usually inaccurate? I will normally play around with powder charges before posting something like this, but I've seen testing with H110 (in .44 magnum) that showed all charges give about the same velocity because of the go/no-go nature of the powder (can't load it light, and run out of volume around the time you hit max load). I am somewhat uncomfortable with playing around with H110 loading levels, should I feel this way?
I also have some hardcast 158 grain semi-wad cutters with wax lube in the groove. Would these be okay to shoot with hot loads of H110 (I have been loading them light with 4 grains of W231)?
Groups were about 4-6 inches at 8 yards. Is H110 in .357 usually inaccurate? I will normally play around with powder charges before posting something like this, but I've seen testing with H110 (in .44 magnum) that showed all charges give about the same velocity because of the go/no-go nature of the powder (can't load it light, and run out of volume around the time you hit max load). I am somewhat uncomfortable with playing around with H110 loading levels, should I feel this way?
I also have some hardcast 158 grain semi-wad cutters with wax lube in the groove. Would these be okay to shoot with hot loads of H110 (I have been loading them light with 4 grains of W231)?