Excellent bullets. I’ve developed two loads which are very accurate out of my Ruger 4 5/8” Blackhawk with this 170 gr Keith SWC: (11.0 grs 2400, CCI 500 primer, 1.553” OAL, 1,136 fps avg) (6.0 grs Unique CCI 500 primer, 1.553” OAL, 977 fps avg) Really like the wider front driver band which is more akin to a true Keith SWC.

This bullet design predates the 357 mag and it's still hard to beat. This is a well made and good priced version. I've gotten good accuracy with 38 spl.+P loads around 1000 fps from 2 1/2" barrels and 357 loads up to 1400 fps. . Lighter loads were not very accurate.

I have cast this bullet in the past but appreciate the hard alloy used ty RimRock and the consistent weight of 170 grains. I seated these to the front of the front driving band in new Starline brass to fit SP101 chambers-case grip wias quite firm. Charge was 13 gr 2400 and standard remington primer -the charge coming right to the base of the bullet. Five round velocity averages were much more consistent than the current hand book loads with less than 100 percent density and loaded to 9mm pressures: Ruger GP100 6" bbl: 1426 fps 14 fps ex spread; Ruger Sp101 4.2" bbl 1335 fps 60 fps " " Ruger Sp101 2.4"bbl 1231 fps 35 fps spread.

I purchased 1,000 of these bullets about a year ago and they shoot superbly out of my 6.5" Ruger Blackhawk loaded in Starline brass with a Federal 200 primer and 13.0 grains of Alliant 2400. This load averages about 1170 from my revolver with excellent accuracy.

170gr SWC - Keith, Winchester 1894 Trapper 16.5"barrel, 357 mag, loaded 11.0 gr Blue Dot, produced 2" groups @100 yards. NOT TO BAD!