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870 shooting bad please help

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Unread 09-16-2010, 08:26 PM
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Join Date: Dec 2009
Location: Holland, MI
Posts: 2,016
Re: 870 shooting bad please help

Originally Posted by dyllan78 View Post
Thank you very much for the information. Finally a couple responses to fill in the gaps. Im going to work on it, but i think ill be better of buy a barrel for my thompson center, 12 and 20. i dont want to put any more money into an pump action gun that wont give me what im looking for. Anybody looking for a hastings barrel???
For the price of buying a barrel for your TC you can easily buy a 5-shot box of several types of slugs and figure out exactly what your gun will - and won't - shoot well. It will give you exactly what you're looking for - if you let it. A 12 gauge will do better than a muzzleloader with the right ammo.

I fit a Hastings rifled barrel on my Rem 11-87 and shot it on Monday. Of the 3 brands of slugs I had it shot each brand very differently, which did not surprise me at all. Ended up with 2-3 inches at 100 yards, which is more than good enough for me.

You may want to think about sighting in off a Lead Sled. Slugs kick horribly, and I wouldn't think of sighting in slugs without my Sled. Any flinch and you've got your 5 inch 100-yard group.
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Unread 09-17-2010, 11:35 AM
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Join Date: Sep 2010
Location: Virginia
Posts: 95
Re: 870 shooting bad please help

Thanks agian, by any chance are you a gunsmith?
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Unread 09-17-2010, 03:36 PM
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Join Date: Nov 2007
Posts: 17
Re: 870 shooting bad please help


i'm have been a cop for the past 33 years as a proffession. i have been a ffl holder since 85 when i started repairing guns for others. i live right on the otherside of the river from nj which is a shotgun only state and our area has been shotgun only for over 20 years so i have had some time to work with this issue.
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Unread 09-20-2010, 09:06 PM
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Join Date: Apr 2010
Posts: 20
Re: 870 shooting bad please help

I always try to make a list of possibilities when I encounter a problem like this. Several of these are repetitive so I apologize in advance.

1. The scope could be broken but I doubt it if it is a leupold.
2. SLug guns are picky about brand preference.
3. THat being said 2 inches isn't horrible at 50 yds. despite what many will say.
4. I have heard (but never witnessed) that bigger slower slugs get eratic after going subsonic and groups open up quite a bit.
5. My friends all use my lead sled and our groups have shrunk and virtually eliminated flinch induced flyers.
6. Some errant lead or sabot residue could be interfering with accuracy. I once took a barrel off and literally beat it on the floor with a tight jag and patch, when it came out little shards of lead came out with it. Groups tightened dramatically.
7. Sometimes life just gets you that way.

Best of Luck
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Unread 09-23-2010, 09:32 PM
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Join Date: Jul 2007
Location: Maryland
Posts: 479
Re: 870 shooting bad please help

I shot an 870 for years with a hastings. It was a nightmare till I got the barrel fitted. The #1 killer of accuracy on a 870 slug gun is barrel fit. As said keep it tight but often times this is not enough and they need to be fitted. Lightfields more often than not will be a top choice.

Look at Tar-Hunt shotguns Randy Fritz does custom fitting of barrels for designated 870 slug gun. Barrrels can be removed with torch
"Fast is fine accurate is final"
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Unread 10-06-2010, 05:17 AM
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Join Date: Oct 2010
Posts: 1
Re: 870 shooting bad please help

First you need a barrel with a cantilever base. I had purchased a Mossberg 500 pump that had a drilled and tapped receiver for a scope mount and I used it. I could not get consistent groups with it. My gunsmith told me that I wouldn’t because most pump shotguns don’t have a solid lock up between the barrel and the receiver. He then demonstrated the movement of the barrel while the receiver was in a padded vise. No matter how tight the barrel nut was, the barrel still moved. He also showed me the same movement on a Remington 870. I then purchased a cantilever rifled barrel from Mossberg and the groups improved drastically. I was still not satisfied. The gunsmith inspected my setup and pointed out that the crown at the muzzle seemed out of alignment. He recrowned it and my groups got really tight. At 100 yards I can get 3 to 4 inch groups. I am using the Winchester Partition Gold Sabots. My best groups are with a discontinued Marlin Slugmaster bolt action shotgun. I had to recrown this barrel also. I have also heard that Browning and Savage have bolt action shotguns that shoot very well. Good luck
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