Patterning advice

[Fatbeard]

I shot my sons 835 this weekend and it was shooting around 15" high. It is a Mossberg 835 with a 20" barrel along with a Indian Creek .675 choke. The only thing that changed was the shot shell. Used the londbeard by Winchester 3" #5. Had been Xtended Range. I shot an old round and they were high as well. I used this gun for many years and took plenty of birds. My ? Is this I adjusted the sights as far as they could go and it helped some about 8". If I move the rear sight forward will that help any at all? Don't know what has happened to the pattering. Any advice??

[d.winsor]

I would put a scope on the gun, as tight as those long beards can be, from what I have seen, it wouldn't be a bad move.

[scdxt]

Do you have any other chokes? That choke could not be concentric with barrel. Check the barrel nut make sure its tight. I would say its choke. If it turns out to be choke call them they are great to deal with and will swap it out.

[Ruger M77]

Shooting high must be a Mossberg trade mark I just bought a 20ga turkey thug model and it shoots high even after runnin the sights out of adjustment I had a 12ga 500 that was the same way

[R AJ]

You can put a taller front bead on it as is and then be able to just barely see the top of the bead and she should come way down if you want to stick to bead sights.

If it is a vent rib you can put some shim on the rib and then put a bead like a gobble stopper bead on top of it if necessary.

[the Ward]

 Just throwing a few things out there, If the gun previously shot ok, and nothing was changed, it could be the temperature, usually hotter temps, higher poi. Could be inconsistent shell, higher velocity, usually higher poi. Could be mag cap needs to be tighter/looser. Could be the way your shooting/ holding it vs the way you shot it before. We often would see that with slug guns when sighting in from the bench, the relatively slow moving projectile would not exit barrel before the effects of recoil allowed the muzzle to rise slightly, causing a high poi. We found if shooting from a bench to put a little pressure on the top of the barrel with fingertips to retard the muzzle jump. It was worse(high poi) with longer barrels than shorter ones. Don't know if any of this will help or not, just throwing out some ideas. Good luck, hope you get it straightened out.

[Isomaad]

If it is shooting high, I don't think moving the rear sight forward will help.  If anything it will hurt.  You want to make the rear sight lower to drop your POI.  If your rib slopes down in the rear toward your receiver then you should be able to bring your POI down some more by sliding your sight back.  I'm not sure it will be worth 7" though, but maybe.  I have a Mossberg 930 Turkey that shot about 12" high with the rear sight lowered all the way.  I decided to just put a set of Williams Universal Slugger Fire sights on it to fix the problem and they worked very well.  The Truglo Magnum Gobble Dot sight is another good option for open sights.  I wish I would have went with those instead of the Williams just for the fact that they grip the side of the rib instead of underneath like the Williams does.  The Truglo just seems like it would be more secure.  However, I've not had any issues with the Williams coming loose and they really are nice sights.

[mightyjoeyoung]

To fatbeard:

Question one:  Have you recently taken the gun apart to clean it/polish the barrel?

Question two:  Is the barrel retention nut TIGHT? 

Ward, that's called a flinch when you jerk the trigger so hard because you are afraid of the punishing recoil of a rifled shotgun slug that you lift the muzzle of the gun, causing a high shot.  The projectile is well out of the barrel before the gun has recoiled completely, even if the slug is gowing "slow" at a modest 1450 fps (the avg. vel for the "slower" slugs made these days)

[the Ward]

To fatbeard:

Question one:  Have you recently taken the gun apart to clean it/polish the barrel?

Question two:  Is the barrel retention nut TIGHT? 

Ward, that's called a flinch when you jerk the trigger so hard because you are afraid of the punishing recoil of a rifled shotgun slug that you lift the muzzle of the gun, causing a high shot.  The projectile is well out of the barrel before the gun has recoiled completely, even if the slug is gowing "slow" at a modest 1450 fps (the avg. vel for the "slower" slugs made these days)

No, it is a well know fact in the slug shooting world. Generally the most accurate slug guns have shorter barrels ,that is one of the reasons you do not see long(over 24") slug barrels offered. And by the way, no flinching here,i have shot hundreds of slugs, the slug guns are toys compared to my .375 ultra mag, and I don't flinch with it, either lol.

[mightyjoeyoung]

To fatbeard:

Question one:  Have you recently taken the gun apart to clean it/polish the barrel?

Question two:  Is the barrel retention nut TIGHT? 

Ward, that's called a flinch when you jerk the trigger so hard because you are afraid of the punishing recoil of a rifled shotgun slug that you lift the muzzle of the gun, causing a high shot.  The projectile is well out of the barrel before the gun has recoiled completely, even if the slug is gowing "slow" at a modest 1450 fps (the avg. vel for the "slower" slugs made these days)

No, it is a well know fact in the slug shooting world. Generally the most accurate slug guns have shorter barrels ,that is one of the reasons you do not see long(over 24") slug barrels offered. And by the way, no flinching here,i have shot hundreds of slugs, the slug guns are toys compared to my .375 ultra mag, and I don't flinch with it, either lol.

FWIW, I haven't seen many Slugger bbls much over 18" in a LOOOOONG time!  My own 870 custom slug has had trigger work, action smoothing, barrel polishing and the barrel trued and pinned to the rcvr.  With Brenekke Super Sabots and Hornady SST's she'll put a ragged hole in the bull at 100 yards all day long.  Also, I'd rather shoot my uncle's .416 Rigby Ruger #1 Safari than that 870 some days.  lol

[surehuntsalot]

Shooting high must be a Mossberg trade mark I just bought a 20ga turkey thug model and it shoots high even after runnin the sights out of adjustment I had a 12ga 500 that was the same way

that is very strange,been hunting/shooting with Mossbergs for 40 years and have never had one that shot high