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Made it to the range today to continue in trying o learn what loads are preferred by the 640 and also with the 442 (first range trip for the 442.). Was able to find some .357 158gr loads, which are what the sights on the 640 are what I was told are regulated to as far as elevation goes. I also found some Critical duty 135gr .357 loads. I already tried 125 gr .357 and .38 Special rounds and found them to print low.
Starting from scratch with the 442. Loads tried were, Critical Defense, 110 gr, Remington 125 gr +P HTP, CCI Blazer 130 gr. FMJ, and Herter’s 130 gr FMJ.
Seems the 640 will print at elevation POA with both the 158 gr and Critical Duty 135 gr .357 magnum loads. I apparently did not drift my sight enough to fully correct the tendency to pull left. So any groups that seem centered are reflecting some Kentucky windage on my part.
The 442 seems to right dead on with the Remington HTP 125 gr +P, and a little low with the 110 gr Critical Defense. Target loads using 130 gr bullets also seem to meet the sight regulation of this little Airweight.
Both triggers are good, but the 640 Pro-Series does reflect the work of the Performance Center parts in it.
Starting from scratch with the 442. Loads tried were, Critical Defense, 110 gr, Remington 125 gr +P HTP, CCI Blazer 130 gr. FMJ, and Herter’s 130 gr FMJ.
Seems the 640 will print at elevation POA with both the 158 gr and Critical Duty 135 gr .357 magnum loads. I apparently did not drift my sight enough to fully correct the tendency to pull left. So any groups that seem centered are reflecting some Kentucky windage on my part.
The 442 seems to right dead on with the Remington HTP 125 gr +P, and a little low with the 110 gr Critical Defense. Target loads using 130 gr bullets also seem to meet the sight regulation of this little Airweight.
Both triggers are good, but the 640 Pro-Series does reflect the work of the Performance Center parts in it.