Sabot slug muzzle jump

RoscoeT

RoscoeT

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This weekend we were shooting a Mossberg 500, cantilever rifled barrel and Leupold 6x shotgun scope shooting Winchester sabot slugs at 1400fps

On paper I can hit 100yd target 5/5 times no problem when laying it on a rest.

For some reason, the muzzle jump on this gun when shooting in field positions was way too much. Prone I cannot even get on paper, I shoot high every time.
The barrel is ported and I was holding it tight as hell. I'm a big guy and can shoot large rifles easy enough but this thing is just stupid, jumps like hell. Shots were always high. Left right accuracy was not an issue. On a rest, the thing hits the bulls-eye and can almost make one hole at 100 yards.

Is this common for these types of guns? is there anyway to combat that problem? Deer wont sit still and let me set up a shooting bench.
 
brybenn said:
Mite have to do with how you place ur cheek on the stock. I've never come across that problem in all of the ones I've owned
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I had a friend tried it too. We must have spent a small fortune in shells. The jump unmanageable. You need to be on a bench or it does not hit at point of aim. Lots of money spent and not seeing expected results.
 
Forget the bench. Who cares how it shoots from the bench? Same with prone...it's a slug shotgun, 200 yards would be a maximum-crazy-long shot. Hold the gun as you would when hunting, rest your forward hand on the front sandbag, and then after sighting it in fire a couple of test shots from offhand standing just to make sure there are not any major differences.

I know what you mean about cost...the premium sabot slug loads are insanely expensive. Whenever I change the scope or anything else on one of my slug shotguns, I always begin the sight-in with the cheaper sabot loads (Winchester makes a good one) and get close to my zero before burning up the $4 or $5 per shot loads.
 
Not sure about the 500 but I've got an 835 with ported barrel and the cantilever as well. Mine kicks pretty good, especially with 3" slugs but it's usually just the normal straight back kick with mine, i've never had a muzzle jump issue (except for myself flinching from time to time with the 3" slugs). Mine has a raised cheek piece to correct for the height of the scope, I imagine you're does as well but i've found mine is still slightly low and I've had to put "low" scope rings on to correct for this, it really improved the fit. If that isn't an option a foam pad on the cheekpiece might help too. I'd tear the shotgun down and remount the barrel as well, not sure but something might not be sitting just right and tight. Wish you all the best in correcting this, I understand the cost issue all too well.
 
jjohnwm said:
Forget the bench. Who cares how it shoots from the bench?
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The bench helps rule out things. If a gun shoots well from a bench for 2 people then you know that the scope is lined up and the accuracy of the gun itself is fine.

Where I hunt, most shots are prone or sitting. And if I can't hit squat from a supported shooting position what chance would I have off hand?

I was shooting over the 11'' paper target shooting prone. Off hand would have to be worse.
 
RoscoeT said:
The bench helps rule out things. If a gun shoots well from a bench for 2 people then you know that the scope is lined up and the accuracy of the gun itself is fine.
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I totally agree with proving the potential accuracy of the gun off the bench. However, once you know that the gun is capable of good groups, sighting the scope off the bench and then trying unsuccessfully to shoot to the same zero from offhand is wasting your money.

It's like shooting from a bipod. Many guns shoot to a different point of impact when shot off a bipod as opposed to from the bench. Don't fight it...prove the accuracy and sight in from the bench to remove the human variable factor, but then refine your zero so that it works from hunting positions.

Give it a try...the current approach isn't working.
 
Try shooting using a sling. If your right handed you want your sling to come under your left elbow. adjust the sling until you can brace the gun comfortably with your forward arm using the sling. May help, it worked for me.

-CZ
 
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