Look at this target... Is this wind or trigger pull?
#1
Fork Horn
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Join Date: Aug 2009
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Posts: 118
Look at this target... Is this wind or trigger pull?
Look at this target for me and give me some insight. My .270 Remington 700 is dead on from 100 yards. The shots on the target you see are from 179+ yards with a 12 mph wind. My question is does this look like a wind issue, or a tight trigger? Tight trigger meaning it requires a little more pull on the trigger and it is causing the gun to shift right on me.
#2
By no means an expert, but if the wind would have the same impact on all your shots then I would think your grouping would be a little tighter. Then again do you have a problem with a tight trigger at 100 yards?
#4
If you're having no prob's at 100 yards, then I'd say it's not a trigger issue. Also, regardless of the lbs. of trigger pull, IMO you shouldn't be getting shots pulled off to one side because a good trigger pull is straight back inline with the gun all the way back to the stock.
You also didn't specify which direction the wind was coming from, but by your picture I'm assuming from the left side. LOL!
If you are shooting good groups at 100 yards, your 200 yard shoots shouldn't be that bad either, so I'm thinking wind.
iSnipe
You also didn't specify which direction the wind was coming from, but by your picture I'm assuming from the left side. LOL!
If you are shooting good groups at 100 yards, your 200 yard shoots shouldn't be that bad either, so I'm thinking wind.
iSnipe
#7
Fork Horn
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Join Date: Aug 2009
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I think I've found my answer... Looking at the chart below. at 150+ yards, the drift is 1.5"
shooting chart for a 270 130 gr
Range 0 yds 50 100 150 200 250 300 350 400 450 500
Velocity 3060mv 2950 2840 2730 2620 2520 2420 2320 2220 2130 2060
ft/lbs 2705 ft/lbs 2505 2320 2150 1985 1830 1690 1555 1430 1310 1200
flight-time 0 /sec .05 .102 .155 .211 .267 .328 .39 .454 .520 .586
7½mph/11fps "lead from" ½' 1' 1.7' 2.3' 3' 3.6' 4.3' 5' in-feet
15mph/22fps heart/lungs 1' 2' 3½' 4½' 6' 7' 8½' in-feet
25mph/36.6fps heart/lungs 2' 4' 6' 8' 9½' 12' in-feet
30mph/44fps heart/lungs 2.2' 4.5' 6.8' 9.3' 11.7' 14.4'
35mph/51.3fps heart/lungs 2½' 5¼' 8' 11' 14' X
Drift@10mph 90° .2" 0.7" 1.5" 2.8" 4.4" 6.5" 9" 12" 15.5" 19.6"
250yd zero -1.5" +1" +2.4" +2.8" +2" zero –3.4" –8.3" –14.8" –23.1" –33.3"
shooting chart for a 270 130 gr
Range 0 yds 50 100 150 200 250 300 350 400 450 500
Velocity 3060mv 2950 2840 2730 2620 2520 2420 2320 2220 2130 2060
ft/lbs 2705 ft/lbs 2505 2320 2150 1985 1830 1690 1555 1430 1310 1200
flight-time 0 /sec .05 .102 .155 .211 .267 .328 .39 .454 .520 .586
7½mph/11fps "lead from" ½' 1' 1.7' 2.3' 3' 3.6' 4.3' 5' in-feet
15mph/22fps heart/lungs 1' 2' 3½' 4½' 6' 7' 8½' in-feet
25mph/36.6fps heart/lungs 2' 4' 6' 8' 9½' 12' in-feet
30mph/44fps heart/lungs 2.2' 4.5' 6.8' 9.3' 11.7' 14.4'
35mph/51.3fps heart/lungs 2½' 5¼' 8' 11' 14' X
Drift@10mph 90° .2" 0.7" 1.5" 2.8" 4.4" 6.5" 9" 12" 15.5" 19.6"
250yd zero -1.5" +1" +2.4" +2.8" +2" zero –3.4" –8.3" –14.8" –23.1" –33.3"
#8
IMO, the wind would need to be blowing a lot harder than that to affect the POI at anything less than 200 yards. If it was a muzzleloader, maybe. But with the velocities of a centerfire rifle, I don't see a 12 MPH wind blowing your group at all.
#9
Fork Horn
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Join Date: Aug 2009
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Posts: 118
This would explain it thought...
Drift@10mph 90° .2" 0.7" 1.5" 2.8" 4.4" 6.5" 9" 12" 15.5" 19.6"
1.5" is exactly what I measured on my target too.
Either way, I will go back on a non-windy day and shoot a few more. I made a shot two years ago from 189 yards away and I dropped him like a fly.
Drift@10mph 90° .2" 0.7" 1.5" 2.8" 4.4" 6.5" 9" 12" 15.5" 19.6"
1.5" is exactly what I measured on my target too.
Either way, I will go back on a non-windy day and shoot a few more. I made a shot two years ago from 189 yards away and I dropped him like a fly.