Went to the range yesterday with three loads for for my 38 Super. The gun is a Sig 1911 Traditional Match Elite with adjustable sights. I was shooting at 25 yards off of a rest. In all three loads, I was using 4.9 grains of Bullseye with a COL of 1.265”.
Bullet #1: 130 gr Win FMJ, .356
Bullet #2: 125 gr Hornady HAP, .356
Bullet #3: 125 gr Hard cast RN, .356 (best group size of the three)
I did not have a chronograph, but from an older Alliant book, these should run about 1000-1100 FPS. Max loading with the 130gr FMJ is listed as 5.1 gr at 1170 FPS.
The point of impact for all three loads was roughly identical. The first group I shot with the 130 gr Win FMJ was 8-9” high using a 6 o’clock hold. I adjusted the rear sights all the way down and they are now bottomed out, with no more adjustment available. All three loads are still shooting 2-3” high at 25 yards.
Could this be the result of a lighter bullet at a modrate to slower speed for the caliber?
I have some 147 gr Hornady XTPs (.355) I will load up and shoot next, but I think I am going to have to swap the front sight for a taller one eventually. The factory front sight is .245” from the bottom of the dove tail to the top of the sight and the sight blade itself is .185” tall.
Any suggestions?