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I loaded up 30 Strikers last evening using mixed cases, CCI SPP, and 11.3gr AA#9. (How did I arrive at 11.3? That's what my Lee disc throws and I didn't feel like messing with the adjustable charge bar for a sample run). Lee claims the velocity to be around 1200, IIRC. Today, I dodged cold rain showers and a stiff north wind and hit the range for my lunch break.
It was worth it.
That 180gr bullet shoots very well and it lets you know you aren't shooting Grandpap's .38 Special. I was shooting a standard, rifle sight-in target (large bull in the center with four small bullseyes in each quadrant) at 50 yards. I shot standing, free-hand. I'll try to get some pics up later tonight but I was pleased with their performance.
What was really pleasant was shooting at our 200 yard berm. Some folks kindly left some clay pidgeons out on the dirt, so from a sitting, rested position I took some pot-shots at them. I don't think I hit any, but I got close enough that I was really impressed. I've never tried shooting my .357 at that distance before --- then again, I've never had slower powders like 2400 or AA#9 before. Not only did these bullets reach out and get there fast, they did it with considerable accuracy. Sighted in for 50 yards, I only had to raise my front sight two "ribs" (the horizontal, anti-glare grooves cut into front sights) and I was close.
I really see this bullet as a silhouette or hunting bullet. Its 180grain weight is about 25% greater than the 158 SWC. While the profile doesn't have the shoulders of the SWC, it's flat face (meplat, yes?) should deliver a sufficient shock to any game that is hit. A steel plate certainly will respond violently- and loudly! - to its mass.
By comparison, I had 20 rounds with the 158SWC charged with Unique (6gr, I believe?). That was like Grandpap's .38 Special compared to the heavy charge and heavy bullet. Both are fun to shoot. I wouldn't want to shoot the 180 gr with that dose of AA#9 all day; I wouldn't want to take the mild Unique load hunting for anything bigger than small stuff.