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< 16ga. Guns ~ 16 ga IJ champon shoots low,fix? |
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Posted:
Tue Dec 27, 2016 5:32 pm
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Joined: 30 Sep 2015
Posts: 637
Location: NEW SALISBURY INDIANA
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I patterned my 16 ga IJ and point of impact is 8 inches low at 30 yds how to fix? I am reaming out the choke from full to mod, can that be used to fix it? |
_________________ 16ga 3-Win 37
16ga Ithaca 37 1946
16ga Western Auto Revelation
16ga Browning A-5 1929
16ga Marlin 90 1939
16ga browning citori lightning grade 3 2003
16ga Francisque Darne 1920 |
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Posted:
Tue Dec 27, 2016 5:47 pm
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Member
Joined: 15 Apr 2007
Posts: 9455
Location: Amarillo, Texas
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Posted:
Tue Dec 27, 2016 6:19 pm
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Joined: 30 Sep 2015
Posts: 637
Location: NEW SALISBURY INDIANA
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raising the comb is plan B if I cannot modify the barrel |
_________________ 16ga 3-Win 37
16ga Ithaca 37 1946
16ga Western Auto Revelation
16ga Browning A-5 1929
16ga Marlin 90 1939
16ga browning citori lightning grade 3 2003
16ga Francisque Darne 1920 |
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Posted:
Wed Dec 28, 2016 6:48 am
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Member
Joined: 08 Aug 2011
Posts: 1946
Location: Central CT
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Playing with the choke to change POI is probably not the thing to do.
Adding a bit of comb height is better, because it is reversible. Once you mess with the concentricity of the choke you own it forever. The only way to undo it is to have choke tubes installed. |
_________________ Mark |
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Posted:
Wed Dec 28, 2016 8:37 am
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Joined: 27 Jun 2012
Posts: 1111
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Using the 16 yard Churchill method of patterning for point of impact, your 8" low at 30 yards is about 4" low at 16 yards. The correction required is to raise the comb 1/16" for each inch the pattern is off, plus a correction if you desire a 60/40 bird hunting pattern. So the comb must come up at least 1/4" or more if you want other than a 50/50 pattern.
What you have is a stock that has too much drop for your mount. I would address the problem stock rather than trying to make the correction with the choke reaming. An adjustable comb or stick on comb riser kit would likely resolve the low pattern. Stock bending that much for drop might be more than you could obtain, as stocks generally bend easier for cast than for drop. A new butt stock of fitted dimensions would be the most elegant fix, but unfortunately would likely cost more than the gun is worth. |
_________________ An elderly gentleman, his faithful dogs, and a 16 ga SXS. All is right with the world. |
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Posted:
Fri Dec 30, 2016 11:50 am
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Member
Joined: 12 Mar 2005
Posts: 6535
Location: massachusetts
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kennedy 756, I would not first assume your barrels are shooting low. It would be wiser for you to first very carefully visually check your shooting eye alignment w/ the barrel rib when you have the gun solidly mounted before doing anything else.
If you have to lift your head up to see over the block (even slightly), then the stock has too much drop at the point where your cheek contacts the comb. As others have advised, the best course of action is to raise the comb height. Adding a pad or having the stock bent are two options.
If your eye is well aligned w/ the barrel rib and you can see perceive just a bit of the rib when you are focused on a target along it (not at it), then the barrels might be hitting low. However, messing w/ the muzzles can be very risky since both barrels are initially aligned to hit to a common POI. You might consider having the barrels curved in the middle by a specialist. This would align both muzzles up a tad which will shift the mutual POI up. |
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Posted:
Fri Dec 30, 2016 1:12 pm
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Joined: 24 Jun 2013
Posts: 2062
Location: canandaigua - western n.y. (formerly deerhunter)
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old master gunsmiths here used to ask what adj you need , go over to the door jamb , lock it in and give a yank !! worked ok and smelling salts were needed on a few of the guys whose expensive trap guns went thru this ! Nick is a master barrel man of old , if he see's this and responds , he'll tell you the best way . You CAN offset the ream , you CAN bend the barrel , or , adj your comb .(safest) |
_________________ Molly sez AArrrooooooah ! |
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Posted:
Fri Dec 30, 2016 2:35 pm
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Joined: 09 Dec 2009
Posts: 1370
Location: Cheyenne, Wy
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OK, I'll put in my two cents worth, with the caveat that I am generally ignorant of all things technical.
If you KNOW it is shooting 8" low at 30 yards, why don't you just raise your point of aim a little bit?
You are not shooting a bench rest rifle, just a scattergun, 8" shouldn't make all that much difference in my little uneducated mind, I may be all wet, but I learned to shoot handguns by the shoot, see what the sights are doing, then adjust my hold accordingly, why wouldn't that work with a shotgun?
Dale |
_________________ One man with courage makes a majority.
...Andrew Jackson... |
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Posted:
Fri Dec 30, 2016 3:20 pm
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Joined: 30 Sep 2015
Posts: 637
Location: NEW SALISBURY INDIANA
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Cheyenne08 wrote: |
OK, I'll put in my two cents worth, with the caveat that I am generally ignorant of all things technical.
If you KNOW it is shooting 8" low at 30 yards, why don't you just raise your point of aim a little bit?
You are not shooting a bench rest rifle, just a scattergun, 8" shouldn't make all that much difference in my little uneducated mind, I may be all wet, but I learned to shoot handguns by the shoot, see what the sights are doing, then adjust my hold accordingly, why wouldn't that work with a shotgun?
Dale
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because this gun is going to be used by friends and family not use to shooting a lot, when we get together and shoot pasture trap. need it not to require any extra instructions. |
_________________ 16ga 3-Win 37
16ga Ithaca 37 1946
16ga Western Auto Revelation
16ga Browning A-5 1929
16ga Marlin 90 1939
16ga browning citori lightning grade 3 2003
16ga Francisque Darne 1920 |
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Posted:
Fri Dec 30, 2016 3:52 pm
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Joined: 28 Jan 2007
Posts: 82
Location: Steep Rock Lake, North Western Ontario
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Look up "how to bend a shotgun barrel" on the I Net. Select the system used by a lot of old time trap shooters where you strike the barrel against a bag of shot hung over a gate or even a truck tailgate. I have a plain barreled Mossberg 500B 16 bore that came back from Poly Choke shooting about 10" low at 20 yards. I used the mentioned technique and it worked great. It did take a few attempts though. I would not use the bend it between tree branch forks idea, it just seems that it could be overdone very easily. End result will be a gun shooting where it is looking and with no noticeable change in the gun's appearance.
Darryl |
_________________ " 2 1/2 drams of powder, 1 ounce of shot, should be good for all upland use, that's the 16"
Gene HILL |
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Posted:
Fri Dec 30, 2016 4:16 pm
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Member
Joined: 09 Dec 2009
Posts: 1370
Location: Cheyenne, Wy
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kennedy756 wrote: |
Cheyenne08 wrote: |
OK, I'll put in my two cents worth, with the caveat that I am generally ignorant of all things technical.
If you KNOW it is shooting 8" low at 30 yards, why don't you just raise your point of aim a little bit?
You are not shooting a bench rest rifle, just a scattergun, 8" shouldn't make all that much difference in my little uneducated mind, I may be all wet, but I learned to shoot handguns by the shoot, see what the sights are doing, then adjust my hold accordingly, why wouldn't that work with a shotgun?
Dale
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because this gun is going to be used by friends and family not use to shooting a lot, when we get together and shoot pasture trap. need it not to require any extra instructions.
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So these folks don't shoot a lot right? They probably aren't going to shoot any better no matter what you do to that gun.
They are not experts, they won't know the difference.
Just supply the shells and a friendly place to shoot and they will be happy as clams.
Dale |
_________________ One man with courage makes a majority.
...Andrew Jackson... |
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Posted:
Fri Dec 30, 2016 7:44 pm
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Joined: 30 Sep 2015
Posts: 637
Location: NEW SALISBURY INDIANA
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Cheyenne08 wrote: |
kennedy756 wrote: |
Cheyenne08 wrote: |
OK, I'll put in my two cents worth, with the caveat that I am generally ignorant of all things technical.
If you KNOW it is shooting 8" low at 30 yards, why don't you just raise your point of aim a little bit?
You are not shooting a bench rest rifle, just a scattergun, 8" shouldn't make all that much difference in my little uneducated mind, I may be all wet, but I learned to shoot handguns by the shoot, see what the sights are doing, then adjust my hold accordingly, why wouldn't that work with a shotgun?
Dale
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because this gun is going to be used by friends and family not use to shooting a lot, when we get together and shoot pasture trap. need it not to require any extra instructions.
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So these folks don't shoot a lot right? They probably aren't going to shoot any better no matter what you do to that gun.
They are not experts, they won't know the difference.
Just supply the shells and a friendly place to shoot and they will be happy as clams.
Dale
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good point,I may be over thinking this |
_________________ 16ga 3-Win 37
16ga Ithaca 37 1946
16ga Western Auto Revelation
16ga Browning A-5 1929
16ga Marlin 90 1939
16ga browning citori lightning grade 3 2003
16ga Francisque Darne 1920 |
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