Not sure if this is the right spot for my question but if not mods please move. Gun is a uberti 45 colt with a 3.5 in barrel and birds head grip.
At the range today 7yd, and 10yd I finally found that a fine bead,(top of front blade maybe 1/8" above the rear sight groove) gave me
stellar poa/poi. All in the 8/9/10 ring on a 8in circle. One ragged hole more or less assuming I get enough finger on the trigger. The small grip
has me pulling low/left every time using the pad. More finger (to the crease) 9/10 ring dead on. After about 100rds I moved back for 10 rounds 5 and 5 at 25yds just to see if I could even get
on the paper. First shot was .5 in off the paper low, next round touching paper low. I threw the third shot called left about 2in or so. 4 and 5 were in the
5 ring low. Second five were a vertical string starting 1 in the 7 ring 2 in the 8 (one left of other 1in) 4th shot was dead on bullseye in the 10 and the last shot was a
9 ring straight on low.
I was truly impressed with this little cannon, but here is the question. During the second string I was simply getting more and more front sight to get to the bull ending with about 2/3s of the front blade in the groove.
While this was all freehand and the adjustment is subjective, I don't really understand the ballistics here. I would have thought that in 45 colt 7yards or 25 shouldn't cause me to have to get that much more front sight for correct impact. My sig p220 45acp with a 4.25 barrel is simply line the dots and squeeze the trigger at either distance. I guess I'm trying to figure out if its the way I am sighting the fixed sights on the sixgun, or is it simply a matter of physics with the 3.5 in barrel in that large of a bullet. All were with handloads 8.5 grains unique under a 255gr keith lswc. This is mild to medium recoil and seems to be what this gun really likes. I'm sorry for the description but I cannot upload a picture on this computer. Any thoughts?