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Heavier weight .308


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Anyone know where to find .308 ammo in 168 grains? I shot about 35 rounds through my new Remington 750 Carbine yesterday for the first time.  No scope on it yet, just the irons it came with.  Shoots very nice.  Still can't wait to get a scope on it though. 

Anyway back to topic....the ammo. 

Cannot seem to find this 168 grain ammo as easily anywhere online and even Walmart didn't have it!  The reason I am looking for this is becausee everything I shot was 150.  It jammed up a few times on me but I just kept going.  It always ejected the empties but would jam on the reload as it brought the next round out of the magazine.

I know this is something that can be just from not having many rounds through but after I did some reading I would think this might be from the 150 not give enough pressure to move this fast enough with the action.  Does this sound right?  180 would just be too much and is not needed for what I will used this gun for.

Any advice on where to find this ammo and if I am on the right track going with the higher grain?

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I see no reason why 150 grainers should not cycle.  It's not like the owners manual tells you to shoot any specific grain ammo.  All standard sized ammo should function thru it.  Make sure you got all the packing grease out of the action since it's a new gun.  I would try a couple of different brands of ammo anyway and see what happens.  I think if it isn't cycling right with 150 grain loads it probably won't with others either.  See what happens, if you are still having problems Remington should be contacted since it is a brand new gun.

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when I shot my 30-06 in a 742, I shot 125 grainers, and they cycled with no problems.  Bullet weight is not a factor.  I woud guess the spring under the forearm is dirty and greased up.  The whole gun needs a good cleaning.  The semi's from remington are very finicky and need extensive clening quite often, even when they are brand new. 

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Ok, so clean the action spring and tube good. 

When I clean it yesterday I did not do this.  One other question.  When I clean it yesterday I used the bore brush but am afraid I did it wrong or backwards, inserting it into the end of barrel, going in and then out.  Is this something that is going to mess it up?  Not going to do it again.  Hope I didn't mess anything up.

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Ok, so clean the action spring and tube good. 

When I clean it yesterday I did not do this.  One other question.  When I clean it yesterday I used the bore brush but am afraid I did it wrong or backwards, inserting it into the end of barrel, going in and then out.  Is this something that is going to mess it up?  Not going to do it again.  Hope I didn't mess anything up.

Since you are a semi-auto, you have 2 choices for barrel cleaning. A bore snake type cleaner that you can pull the fouling away from the reciever....or clean from the muzzle with a rod.

If you clean from the muzzle, you are going to want to make provision for the crown of the gun not to be worn from having the rod sliding in and out. This bushing or one of plastic works good for this;

http://www.midwayusa.com/viewProduct/default.aspx?productNumber=965198

Also you will get some nasty fouling and solvents in the reciever/trigger group if not careful. At the end of cleaning a barrel you will want to rinse the area; followed by some compressed air to dry everything off works well too.

If you pick up a cheap gun craddle/vise; you can tip the barrel down while cleaning and that will help.

http://www.midwayusa.com/viewProduct/default.aspx?productNumber=607786

(I'm just using Midway for examples, you can find this stuff lots of places and for decent prices....)

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Frankly, chances are you didn't hurt it. Not the greatest thing to do, and avoid it in the future......

Your not exactly trying for 500 yd groups here.

That last little bit of rifling and the way it ends on the barrel (the crown).....is the last thing that touches a bullet exiting. That's what makes taking care of it on a short list of important. No sense in scratching on it with an aluminum/brass/carbon shaft with crud on it..... :D

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It seems like many people worry about not nicking the crown.  I tell you I have one rifle that I inherited from a late uncle that looks like someone put a file to the crown.  He used to clean it with a cheap aluminum rod from the front end eventhough it was a bolt-action and he did a most wonderful job in chiseling down the crown real good.  I can't imagine how well this gun must have shot before the crown damage because it shoots as good as I could want from a .30-06 even with a craggly looking crown!  I for one wouldn't worry about being rough with the cleaning rod a time or two.

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I don't believe you are having ammo issues as much as a common gun issue with nearly all the Remington auto loaders. As much as everyone would like to say/ believe Remington worked out the bugs on this model....................................I highly doubt it.

If you haven't disassembled the bolt yet, cleaned & lubed it since new out of the box, start there. If it still hangs up do a simple tape test on the bolt/receiver to see if the bolt is actually opening to its fullest extent when fired, if not the spring will have to be reworked/modified to correct the problem.

FDXX75

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I have never been inside a Rem semi auto rifle, but I have a lot of experience with thier semi auto shotguns...

With the shotguns ( 1100s and 11-87s) often they get more dependable after firing a few shots and wearing off the "rough edges"... I suspect that making sure the bolt and gas system is clean is essential... It is with the shotguns....Another issue with the rifles that does not affect the shotguns is the magazine..

I don't think that going to a heavier bullet will affect the chamber pressure a whole lot, especially with factory loads..Chamber pressures with factory loads are generally kept within a certain level, regardless of bullet weight.. I doubt that going to a heavier bullet will cure your functioning issues..

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I have never been inside a Rem semi auto rifle, but I have a lot of experience with thier semi auto shotguns...

With the shotguns ( 1100s and 11-87s) often they get more dependable after firing a few shots and wearing off the "rough edges"... I suspect that making sure the bolt and gas system is clean is essential... It is with the shotguns....Another issue with the rifles that does not affect the shotguns is the magazine..

I don't think that going to a heavier bullet will affect the chamber pressure a whole lot, especially with factory loads..Chamber pressures with factory loads are generally kept within a certain level, regardless of bullet weight.. I doubt that going to a heavier bullet will cure your functioning issues..

I agree with the statement about the mag/clip, if you have another one try it and see if you experience the same issues. I did forget to mention that in my earlier post. There are hundreds of threads/articles on the net discribing your exact problem, with about 3-4 different correction solutions. If you have time, google Remington automatic rifle jamming problems.

FDXX75

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  • 4 weeks later...

I own a 750 carbine in 30-06. I have read a lot of forums about the 308 being bad with the jaming, not sure why but I would completely disassemble it clean it spotless or have a gun smith do it and then go from there. If it still jams try a new mag. My 30-06 was a bit sticky even after cleaning it good. But after a box of ammo it cycles nicely now. Might just need a good breaking in.

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I think the jamming issue may simply be caused by the type of bullet being used.  Some semi-auto rifles will jam as you describe if soft point ammo is used.  You may want to try 150 grain bullets with a harder tip on them, such as Winchester Supreme Ballistic Tip bullets or some such type.

I don't think the 168 grain bullets can be found in anything other than Match ammo for a .308.  They don't make good hunting bullets though, as they are usually full jacket hollow points.  You will find 165 grain bullets in .308 though, and I would try some of those.

I'd check out these different bullet choices prior to tearing a lot of the gun's action apart.

Also, always clean it from the action forward, or use a crown protection device.  The crown itself isn't what ruins accuracy if it gets damaged, it's the actual rifling at the crown that has to be perfect to insure accuracy, and that can be damaged by a lot of cleaning from the muzzle if you don't watch for it.

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The 168 gr. BTHP match bullets are not necessarily considered hunting bullets. Although I suspect they would down a deer handily on a broadside lung or heart shot; they lack the ability to penetrate deep and hold together.

Here's a Hornady 168 gr. BTHP fired from a .308 Win. at about 2550fps. The lead core of the bullet completely penetrated an old rotted stump I was shooting last year but the jacket was left behind after only five inches of penetration. The stump I was shooting at was 200 yds. away. This is what the jacket looked like compared to an unfired bullet. Remaining weight was 30.1 grs. This would not be considered a stout hunting bullet.

IMG_0413.jpg

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I think the jamming issue may simply be caused by the type of bullet being used.  Some semi-auto rifles will jam as you describe if soft point ammo is used.  You may want to try 150 grain bullets with a harder tip on them, such as Winchester Supreme Ballistic Tip bullets or some such type.

I don't think the 168 grain bullets can be found in anything other than Match ammo for a .308.  They don't make good hunting bullets though, as they are usually full jacket hollow points.  You will find 165 grain bullets in .308 though, and I would try some of those.

I'd check out these different bullet choices prior to tearing a lot of the gun's action apart.

Also, always clean it from the action forward, or use a crown protection device.  The crown itself isn't what ruins accuracy if it gets damaged, it's the actual rifling at the crown that has to be perfect to insure accuracy, and that can be damaged by a lot of cleaning from the muzzle if you don't watch for it.

How do you clean a semi auto from the action forward?

I was thinking of trying some of the winchester supreme ammo myself. I was wondering if the nickle casings and lublox bullet coating would help feeding? The corelock remington casing seem to be grungy and the soft points usually seem a bit rough. Good for practice though, easy on the wallet.  :) 

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Anyone know where to find .308 ammo in 168 grains? I shot about 35 rounds through my new Remington 750 Carbine yesterday for the first time.  No scope on it yet, just the irons it came with.  Shoots very nice.  Still can't wait to get a scope on it though. 

Anyway back to topic....the ammo. 

Cannot seem to find this 168 grain ammo as easily anywhere online and even Walmart didn't have it!  The reason I am looking for this is becausee everything I shot was 150.  It jammed up a few times on me but I just kept going.  It always ejected the empties but would jam on the reload as it brought the next round out of the magazine.

I know this is something that can be just from not having many rounds through but after I did some reading I would think this might be from the 150 not give enough pressure to move this fast enough with the action.  Does this sound right?  180 would just be too much and is not needed for what I will used this gun for.

Any advice on where to find this ammo and if I am on the right track going with the higher grain?

Winchestr ballistic tips come in 168 grain

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There is absolutely NO reason why an 180 grain bullet would not serve well for any deer hunting that exists in NYS, at reasonable ranges ( from point blank to 300 yards)...

It ain't like you are talking about 500 grain .458 bullets here.. Do you think that a 180 grain bullet turns a .308 into an elephant gun..??..

There is only 30 grains bullet weight between the 150 and the 180...Trajectory differences are only a couple of inches at extreme range.. We are splitting hairs here.. Shoot whatever bullet that groups and functions well in your rifle from 150 to 180 grains and be happy with it.. Trust me, the deer will never know the difference..

Please, don't take this post wrong... It's fun to discuss ballistic differences, even if slight.. But to get too wrapped up about the differences between a 150 -180 grain bullet in any standard .30 cal. cartridge is kind of silly..

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