I have a rem 7400 in 243. it will not hold zero. I can sight it in and put it away, take it out a week later and can't hit the paper at 100 hundred yards. it has a burris fullfieldII on it ,I bought both new about three years ago. I took the scope off and sent it back to burris, they said it checked out fine. anybody else have this model rifle and have any problems? any suggestions on what to look for?
remington 7400
- Thread starter 243rem
- Start date
Start by checking the base screws and ring screws. Make sure they are tight.
Then check the nut that holds the barrel and barrel extension to the receiver.
When you shoot it make sure you are using consistant form. Same grip, same rest, same pressure on the forearm in the same place (fore/aft). If you can hold steady with the rest closer to the receiver it may help.
Hope this helps.
B
Oh, and if you have see through rings strongly consider replacing them with a set of standard rings/bases.
Then check the nut that holds the barrel and barrel extension to the receiver.
When you shoot it make sure you are using consistant form. Same grip, same rest, same pressure on the forearm in the same place (fore/aft). If you can hold steady with the rest closer to the receiver it may help.
Hope this helps.
B
Oh, and if you have see through rings strongly consider replacing them with a set of standard rings/bases.
it has low rings, everything is tight, I even loctited the forearm screw, shooting from a bench rest. before deer season I took it to an indoor range and sighted at 25 yards the range did a ballistic chart for the bullets I was using. took it outside a week later shot out to 200 yards was still on, used it for deer opener 2 weeks later missed with 5 shots, put it away, got it out after season and couldn't hit the paper at 100 yards. it has done this since it was new. the first season I just put it away and forgot about it. I really want to use this gun. thanks for the input so far.
GC
Well-known member
The Remington semi-auto is well known for the bolt rails chattering and eventually rendering the gun either a single shot or completely useless. Perhaps when that bolt rail wear gets severe enough that can affect point of impact? I don't know how old or how many rounds have been fired through your gun but that wear can show itself within the 800 - 1,000 round count. The only real answer for the problem if you like that type firearm is to buy a Browning BAR or a Remington 7600 pump gun.
Originally Posted By: GCThe Remington semi-auto is well known for the bolt rails chattering and eventually rendering the gun either a single shot or completely useless. Perhaps when that bolt rail wear gets severe enough that can affect point of impact? I don't know how old or how many rounds have been fired through your gun but that wear can show itself within the 800 - 1,000 round count. The only real answer for the problem if you like that type firearm is to buy a Browning BAR or a Remington 7600 pump gun.
Not arguing here, but I thought they fixed the bolt rail when they changed from the 742 to the 7400.
Not arguing here, but I thought they fixed the bolt rail when they changed from the 742 to the 7400.
I don't have a 7400, I have a 760, which is a pump version of your gun. And I had a similar problem, possibly. I would tend to believe it is the scope or scope mount except I know what happened to me and my gun.
Just a thought....do you zero it, put it away, find it off again and rezero it? I did this for months.
If so, don't. Shoot one shot, maybe at 50yards if you have to, and then do that again the next day or whenever, but cold barrel. Do not clean it. Same POI, then you may have the same issue I do.
My gun hits one place when cold, and 2 feet higher and left when hot(at 100 yards). Tracing the climb of POI over 2 summers cost me $100's in ammo, to find it is just the gun. Nothing I can do about it.
Check a single shot cold POI over a couple of days if you can, with little effort (and $$$) you'll see if this is your issue.
Just a thought....do you zero it, put it away, find it off again and rezero it? I did this for months.
If so, don't. Shoot one shot, maybe at 50yards if you have to, and then do that again the next day or whenever, but cold barrel. Do not clean it. Same POI, then you may have the same issue I do.
My gun hits one place when cold, and 2 feet higher and left when hot(at 100 yards). Tracing the climb of POI over 2 summers cost me $100's in ammo, to find it is just the gun. Nothing I can do about it.
Check a single shot cold POI over a couple of days if you can, with little effort (and $$$) you'll see if this is your issue.
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Originally Posted By: TxninVAI don't have a 7400, I have a 760, which is a pump version of your gun. And I had a similar problem, possibly. I would tend to believe it is the scope or scope mount except I know what happened to me and my gun.
Just a thought....do you zero it, put it away, find it off again and rezero it? I did this for months.
If so, don't. Shoot one shot, maybe at 50yards if you have to, and then do that again the next day or whenever, but cold barrel. Do not clean it. Same POI, then you may have the same issue I do.
My gun hits one place when cold, and 2 feet higher and left when hot(at 100 yards). Tracing the climb of POI over 2 summers cost me $100's in ammo, to find it is just the gun. Nothing I can do about it.
Check a single shot cold POI over a couple of days if you can, with little effort (and $$$) you'll see if this is your issue.
Wow! That's a big change! Something doesn't seem right there! My 760's don't react anything like that. Not knocking you, but I'd be looking for something really loose there. Or binding somewhere. Semi's do have a habit of hitting one POI on the first round, with subsequent shots hitting another supposedly from the bolt locking up differently form being manually allowed to close vs. the action closing it when firing. But that's huge! Just a thought.
Just a thought....do you zero it, put it away, find it off again and rezero it? I did this for months.
If so, don't. Shoot one shot, maybe at 50yards if you have to, and then do that again the next day or whenever, but cold barrel. Do not clean it. Same POI, then you may have the same issue I do.
My gun hits one place when cold, and 2 feet higher and left when hot(at 100 yards). Tracing the climb of POI over 2 summers cost me $100's in ammo, to find it is just the gun. Nothing I can do about it.
Check a single shot cold POI over a couple of days if you can, with little effort (and $$$) you'll see if this is your issue.
Wow! That's a big change! Something doesn't seem right there! My 760's don't react anything like that. Not knocking you, but I'd be looking for something really loose there. Or binding somewhere. Semi's do have a habit of hitting one POI on the first round, with subsequent shots hitting another supposedly from the bolt locking up differently form being manually allowed to close vs. the action closing it when firing. But that's huge! Just a thought.
I have a 742 that I sighted once after I inherited it. I pull it out every year to check zero before deer season and usually harvest deer every year. I Haven't adjusted the scope in 6 years. I would almost guarantee you your problem is in the mounting system somehow. I would have guessed a scope problem, but you have checked that. Mine only groups about 1.5-2" but it is good enough for deer under 200 yds. I always use the same ammo and it is consistant as it gets. POI might change if I run 10 rds through it at one sitting but when it cools, it is right back on. maybe you are getting it hot as you sight in and then it is off once it cools. Don't shoot more than 5 shots without letting it sit for about 20 minutes. Good Luck!
GC
Well-known member
Originally Posted By: turkeyeyeOriginally Posted By: GCThe Remington semi-auto is well known for the bolt rails chattering and eventually rendering the gun either a single shot or completely useless. Perhaps when that bolt rail wear gets severe enough that can affect point of impact? I don't know how old or how many rounds have been fired through your gun but that wear can show itself within the 800 - 1,000 round count. The only real answer for the problem if you like that type firearm is to buy a Browning BAR or a Remington 7600 pump gun.
Not arguing here, but I thought they fixed the bolt rail when they changed from the 742 to the 7400.
The 7400 and even the "new and improved" M750 are still the same basic package in a new wrapper. They share the same wear and tear problems. Remington worked over the "jamomatic" issues with some tinkering of the gas system and magazines but ignored the bolt rail and guide issue. There were several shops that specialize in converting the semi-auto Remingtons to pump guns because of this. And they've been in business for a long time doing this work - because it is necessary at some point if you want to keep the gun working in some fashion.
Not arguing here, but I thought they fixed the bolt rail when they changed from the 742 to the 7400.
The 7400 and even the "new and improved" M750 are still the same basic package in a new wrapper. They share the same wear and tear problems. Remington worked over the "jamomatic" issues with some tinkering of the gas system and magazines but ignored the bolt rail and guide issue. There were several shops that specialize in converting the semi-auto Remingtons to pump guns because of this. And they've been in business for a long time doing this work - because it is necessary at some point if you want to keep the gun working in some fashion.
GC
Well-known member
The Model 760/7600/Six Remington pump gun is so danged good I can't understand why Remington ever bothered with the semi-auto. With practice you can shoot the pump gun just as fast as the semi-auto anyway for all practical purposes and it will be light years ahead in accuracy and reliability.