Give me your thoughts on this group..

1

1stmar

New member
This is a 5 shot group. A cluster of 2 (.19) and an 1" away a cluster of 3 (.29). The interesting data point is how it was fired. I fired the first 2 shots (.19) and then there was a cease fire. Targets were changed, maybe 10min later range was hot and I fired the next 3. I didn't have any other rounds for this load to test. My aiming point didn't change, I don't think it was a wind shift as the shots are high and left not just left and don't show a drift pattern. During the cease fire I did put my rifle in a rack to make it safe. Didn't just leave it in the rest.
When you view the picture is rotated 90 clockwise

Welcome any thoughts.
 

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The whole rest after a cease fire is what probably happened. I don't know about your range, but when someone is going down range at my range I like to hang my rifle up so it's not pointing down range
 
Iron sights? If so was there a cloud cover then not (or visa versa) between strings?

What happened just before the first two shots? Did you fire 5 or 6 fouling shots prior to the first string? So you'd have a warm barrel. Then the last three on a cold barrel?
 
Scoped rifle, this was the last of 3 groups of 5. The first 10 were different loads. Waited 1+ minutes between shots and 5+ minutes between groups. Cloudy day, cool (47), slight breeze with peaks to 10mph but didnt feel like a consistent breeze, though hard to say from covered range.
 
No mention of rifle, caliber, bullet or range, tough to make any kind of suggestion other than wild guesses.

Most likely seems to me that since you put your rifle in the rack, then back on the rest to shoot, that something was different when you resumed shooting.

The most minor things can change the point of impact, including how you hold the rifle when firing. Or how it sits in the sandbags, tension on the sling, etc., just about every variable you can think of can play a part, sometimes a significant one.
 
100 yds 22-250 53 hpbt ~3600fps I use the crosshairs on the target to maintain consistency from shot to shot. scope is a b&l elite. Parallax adjusted before shooting.
 
first 2 at 12:00 in a group .19", the next 3 clustered together at 11:00 in a group. Doing some research, starting to think it was wind. The image of the target it rotated 90 degress clockwise.
 
You realize that shooting groups just makes you bonkers. :o
Snipers don't shoot groups at their targets.
Hunters don't shoot groups at their targets.
Save your sanity, don't shoot groups.
You'll live longer and have a happier life. :)
 
What is the distance between the two groups ?

My calculator says you would need a consistent 14mph wind for it to be pushed off 1" . That's a pretty strong wind not to notice .
 
I think your calculator may be off. The bc is .224 with a 10 mph cross wind it would be about 1". The distance between the groups is 1". The flight time is 81ms. The thing that makes me think it's not the wind is the consistency of the second group. The wind would have had to be the same, or pretty close to get a group like that. Possible. Just seems unlikely. I need to get a range flag.
 
Cheek weld.
Grip technique/force.
Rifle rest.

Pick one or all of the above, and I'd say it's an appropriate answer.
I've had it happen, and can even replicate it, almost on-demand, with a few rifles.
 
Cheek weld.
Grip technique/force.
Rifle rest
Click to expand...
Yep, I agree. You could run a check next range session by varying any of those varables during a single shooting session.

Also, I'd discount wind as those pair of groups are vertically displaced; wind would affect them more in a horizontal direction and at the speed you're shooting, even that would be infintesimal.

Best Regards, Rod
 
Have someone you know to be a good shot (at least as good as you) give it a try. See what he gets. But really I wouldn't worry about it in the least.
 
"...10min later..." Ten minutes of cooling can do that. A minute of cooling doesn't really do much.
"...go through my parallax adjustment..." So will that. You shouldn't have to fiddle with that.
"...My calculator says..." Throw it away. Make you as crazy as shooting groups. snicker. Ballistics calculators are computer program written by people who very likely have never seen or fired a real rifle.
"...shooting groups just makes you bonkers..." Think that's why the bench rest guys are a bit, um, peculiar? snicker.
 
For me shooting groups is the only way to measure my improvement. I don't shoot with many others and generally I shoot better than those I do shoot with. So while I would love to turn it over to someone else there really isnt anyone I know that shoots better than I do. Not saying I'm a great shot. I have let others shoot my rifles and it hasn't worked out.

Parallax is not something I adjust much, but there is a process to go through to ensure it is adjusted properly. My range is only 100yds, so limited. I do struggle w my vision.

Always looking to get better at shooting and reloading. Appreciate the responses. Keep them coming
 
Do you wear corrective lenses when shooting? Always? (You mention your vision. Are you wearing corrective lenses? If not, why not?)

Did you zero the scope with/without corrective lenses? Did you zero at 50 yds.?
 
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