I have just taken delivery of a box of NSA 24.8gn 217 slugs. My Kalibrgun Argus 22 was zeroed with JSB Jumbo Heavy Diabolo pellets 18.13gn I loaded 3 slugs into the mag and fired at the target off hand at a distance of 25m in 25mph wind. Initial quick test, these look very good, can't wait...