Sighting in question - The HuntingPA.com Outdoor Community
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post #1 of 17 (permalink) Old 12-29-2018, 02:16 PM Thread Starter
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Sighting in question

When I site in I allow my rifle forestock to rest on sandbag with rifle butt on sandbag, and up against my right shoulder. I take my left forearm and slide under rifle for minute adjustment. I do not put my hand on top of rifle or.grab the rifle from underneath. Thus when I fire the rifle the barrel rises up. I wonder if the barrel is rising or lifting before the bullet exits the barrel and is effecting my sitting in process Also I recently used a Caldwell matix shooting rest. Not a lead sled. Same issue with barrel. Same question, is the barrel rising before the bullet exits and thus affecting my perceived accuracy. Thanks
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post #2 of 17 (permalink) Old 12-29-2018, 02:21 PM
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Unless you’re shooting a VERY slow and heavy projectile, the bullet has long left the bore before your muzzle starts to rise.
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post #3 of 17 (permalink) Old 01-05-2019, 10:58 AM Thread Starter
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Was hoping for some feedback on this unless the one response was spot on,which it may have been. Had some work done recently on rifle by a gunsmith. May take it to the range next week. Since there's no snow for skiing
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post #4 of 17 (permalink) Old 01-05-2019, 11:08 AM
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Originally Posted by Wingatchtochwilsit View Post
Unless you’re shooting a VERY slow and heavy projectile, the bullet has long left the bore before your muzzle starts to rise.

The above is spot on.
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post #5 of 17 (permalink) Old 01-05-2019, 05:27 PM
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by the time the barrel jumps the bullet is long gone. its the bullet leaving the barrel that causes the jump. its the back pressure caused by the gases pushing the bullet out of the barrel that causes recoil and barrel jump. as you have stated that you rest the forearm of the rifle on sandbags this will not hurt your accuracy. just dont rest the barrel on sandbags. hope this helps.
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post #6 of 17 (permalink) Old 01-05-2019, 05:37 PM Thread Starter
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Ok, and thanks. Just wanted to know, obviously.
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post #7 of 17 (permalink) Old 01-10-2019, 07:25 PM
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What kind of rifle is it? Read some articles on getting maximum accuracy out of a lightweight rifle. Applying downward pressure isn't a crazy idea.
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post #8 of 17 (permalink) Old 01-10-2019, 07:41 PM
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What kind of rifle is it? Read some articles on getting maximum accuracy out of a lightweight rifle. Applying downward pressure isn't a crazy idea.
I have read the same thing and I hope I have one as nothing else seems to get it to where I would like to be with accuracy as compared to my other rifles.

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post #9 of 17 (permalink) Old 01-10-2019, 08:31 PM
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I don't totally agree with the others. What rest your using, having the correct bags for the gunstock, where the gun sets in the bags, how you hold the rifle all will effect how the gun acts during recoil, and will effect what you see on paper. Simple things like not removing the sling swivels are often forgotten as well.


I shoot a lightweight 223 that has a big heavy scope and steel rings. It's probably 8lbs all in. I shoot this one handed because I use a joystick front rest. Having it in the bags the same place, using the right grip, and "catching" the gun the same everytime are among the things it takes to shoot tiny groups. When I bench something bigger than... say .243 size or bigger I use downward pressure on the scope by draping my left hand over it.

Last edited by grovey; 01-11-2019 at 07:58 AM.
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post #10 of 17 (permalink) Old 01-10-2019, 08:31 PM
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When a firearm goes off there is primary and secondary recoil. Primary recoil begins the moment the bullet begins to move and increases as the bullet accelerates down the barrel. The rifle is trying to move back away from the bullet with the same amount of energy the bullet uses trying to get away from the rifle. Through formulas this rearward energy transfer can be measured in foot pounds and rifle rearward velocity. A good example of this is a recoil operated semi-auto handgun. As the bullet moves, pressure is exerted back thru the barrel making the barrel slam rearward until it hits the stop and then the extra pressure continues to push back against your hand. No spring in a rifle so the pressure is immediately against the weight of the rifle and your shoulder.
Secondary recoil is the expanding gasses pushing back against the end of the barrel.
If you rest your barrel directly on a hard surface, especially with a lightweight rifle, your bullet will impact high. In most rifles for practical hunting purposes this is mitigated by resting on the rifle forearm.
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