WalkAbout
Member
Hello all,
I've just gotten back from the range today and saved a couple of targets with 3 and 5 shot groups on them in order to check the accuracy of the rifles I was shooting. I'm quite happy with both of them as they were both able to shoot shotgun shells off a tree limb at 50+ yards, but now that I'm home I wanted tp get a it more technical with it.
I've measured the group sizes using digital calipers from the outside edge of the two holes furthest apart in the group. I've utilized a free MOA calculator I found via google,
http://www.indecorous.com/bullseye/moacalc.html
but I'm getting some answers I don't quite follow. For instance, I have a target here with a 3-shot grouping of .825" at 50 yards. According to the calculator, that is a .432 MOA group. It was my understanding that 1 MOA is equal to +/- 1" at 100 yards. Unless my math is completely off base, which is also entirely possible, that would make a group size double that (say 1.6" for simplicity's sake) 1 MOA at 100 yards, which is well above 1.04whatever.
So either I'm doing this completely wrong (likely), the calculator is doing something wrong (plausible), or I actually have no freaking clue what I'm talking about (highly likely.)
Somebody please set me straight. I'd really like to find some ballistics software for a Mac, but as of yet no luck. If it helps, I have the following groups:
3 shots at .825"
3 shots at 1.184"
5 shots at 1.503"
5 shots at 1.398"
5 shots at .828"
All at 50 yards.
Thanks in advance!
b
I've just gotten back from the range today and saved a couple of targets with 3 and 5 shot groups on them in order to check the accuracy of the rifles I was shooting. I'm quite happy with both of them as they were both able to shoot shotgun shells off a tree limb at 50+ yards, but now that I'm home I wanted tp get a it more technical with it.
I've measured the group sizes using digital calipers from the outside edge of the two holes furthest apart in the group. I've utilized a free MOA calculator I found via google,
http://www.indecorous.com/bullseye/moacalc.html
but I'm getting some answers I don't quite follow. For instance, I have a target here with a 3-shot grouping of .825" at 50 yards. According to the calculator, that is a .432 MOA group. It was my understanding that 1 MOA is equal to +/- 1" at 100 yards. Unless my math is completely off base, which is also entirely possible, that would make a group size double that (say 1.6" for simplicity's sake) 1 MOA at 100 yards, which is well above 1.04whatever.
So either I'm doing this completely wrong (likely), the calculator is doing something wrong (plausible), or I actually have no freaking clue what I'm talking about (highly likely.)
Somebody please set me straight. I'd really like to find some ballistics software for a Mac, but as of yet no luck. If it helps, I have the following groups:
3 shots at .825"
3 shots at 1.184"
5 shots at 1.503"
5 shots at 1.398"
5 shots at .828"
All at 50 yards.
Thanks in advance!
b