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Discussion Starter #1
What is the differance besides the 264 having a belt. I've been reading about the 6.5-284 I here its tack driver I doubt ill ever shoot past 300 yrds soon. Also how does it stack up against a 25 wssm on ar platform? . I seen on savage makes a 6.5-284 but I figured I could always get a cheapo m98 have it reworked. Also is this case a 30-06 base or 308 ? . I think the 6.5-284 sounds catchy and odd so id like to have one.
 

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The 6.5-284 does not have a belt. It is based off the 284 Win case; not the 308 Win or the 30-06 case. The 284 has a rebated rim the same diameter as th '06 or 308, but the case body is larger in diameter. I don't have either.
 

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I guess it depends on what you are planning to use the gun for, but the 6.5-284 is one of the more popular benchrest cartridges these days while the 25WSSM seems to be headed toward obsolescence.

Having a M98 rebarreled for 6.5x284 would not be more cost effective than a new Savage, when you factor in the cost of the barrel and labor. I have a 6.5JDJ and I kinda like the odd name of it, as well. :)
 

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Discussion Starter #4
I know the 25 wssm is low on popularity but I do know varmit hunters use them. Have you seen the olympic arms wssm uppers? There about 800$ 24" as barrel. I don't like the looks of the savage either.
 

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The Troll Whisperer (Moderator)
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Well, let me assure you the 6.5/284 WILL shoot beyond 300 yds.

My 6mm/284 shoots MOA at 300 yds, so the 6.5 should have the ballistics to exceed it at that distance.
 

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The 6.5x284 has the same OAL as a .308W, so its going to need the AR10, where the .25WSSM will fit in the AR15. The WSSM is equal to the .25/06, but at a higher pressure.
 

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Discussion Starter #7
Oh I know it shoot way on yonder past 300 yards but I think 300 yards is my limit longest range here is 100 yards unless I find somewhere private. The closet 1k range that's public is 300 miles north of me.
 

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What is the differance besides the 264 having a belt. I've been reading about the 6.5-284 I here its tack driver I doubt ill ever shoot past 300 yrds soon. Also how does it stack up against a 25 wssm on ar platform? . I seen on savage makes a 6.5-284 but I figured I could always get a cheapo m98 have it reworked. Also is this case a 30-06 base or 308 ? . I think the 6.5-284 sounds catchy and odd so id like to have one.
I've had a couple of the 6.5/284's. Currently bought the Savage long range hunter. I don't know if this caliber is any more accurate than my 260's or 6.5x55's but it shoots the 130 gr accubond a couple of hundred fps faster. I bought it for long range shooting, and yet have not experimented with it much beyond 110 yds. As odd a caliber as it is, I do think that it is making its way into more standard rifle manufacturers inventory. I wouldnt be surprised to see a Remington or Winchester offer it or the 6.5-06. As far as 25 WSSM, I think its R.I.P.
BTW, I paid about $750.00 for the rifle at Cabelas
 

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Discussion Starter #9
Well maybe ill wait to see if remington makes a 6.5-284 in a cdl. As far as the 25 wssm goes it probably be the only ar id e er buy.
 

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Winchester stop chambering the WSSM's a few years ago so that should say something. They have a bad reputation for not chambering rounds well at all. The Savage Model 111 Long Range Hunter is chambered in 6.5-284 Norma. There is a bit a difference in it and the standard 6.5-284 Wincheater. The Norma is a little longer case with a shorter neck and a couple of other minor differences. Cabela's has these for 799.99 and on sale sometimes for 749.99. I love this chambering and want to get a Savage myself. They have the new Accustock as well as the Accutrigger, 26 inch tube, and an adjustable muzzle break.
 

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The 6.5-284 is a fine cartridge, or the benchrest crowd wold not use it to win the matches. However, I would much rather see the 6.5x57 or the 6.5-06 offered by the gunmakers simply because they both have a longer neck. The longer neck would protect the grease grooves on my cast bullet. Just my wish for the new year.
 

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The 6.5-284 is a fine cartridge, or the benchrest crowd wold not use it to win the matches. However, I would much rather see the 6.5x57 or the 6.5-06 offered by the gunmakers simply because they both have a longer neck. The longer neck would protect the grease grooves on my cast bullet. Just my wish for the new year.
When you say 6.5x57, are you referring to a 7x57 Mauser, necked down .020"? With the existence of the 6.5x55 Swedish and the 260 Remington, I would have to say such a cartridge would have almost no chance whatsoever of making a splash in the 6.5mm world. The 6.5-06 has already been legitimized by A-Square, but being as it is just .007" bigger than the well-established 25-'06 and .013" smaller than the 270 Winchester, it is not exactly breaking any sales records, either. Of the two, it is certainly a much better cartridge, at least to my way of thinking.

The 6.5-284 is doing well because it offers optimum case capacity, a short-fat design and the smallest bore that will consistently resist moderate winds for long-range competition.
 

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Winchester stop chambering the WSSM's a few years ago so that should say something. They have a bad reputation for not chambering rounds well at all. The Savage Model 111 Long Range Hunter is chambered in 6.5-284 Norma. There is a bit a difference in it and the standard 6.5-284 Wincheater. The Norma is a little longer case with a shorter neck and a couple of other minor differences. Cabela's has these for 799.99 and on sale sometimes for 749.99. I love this chambering and want to get a Savage myself. They have the new Accustock as well as the Accutrigger, 26 inch tube, and an adjustable muzzle break.

The only difference between a 6.5x284 and 6.5x284 Norma is the OAL. The cases are the same. The Norma was developed for 1000yd matches so the longer OAL helped with the long match bullets. If you were building a gun, you could build it on either length action. You would just have to seat the bullets a little deeper into the case to fit the short action.

Savage has added the 260 and the 6.5x284 to more guns this year. Now you can get them in lightweight hunter guns with nice walnut [like a CDL], and standard synthetic stock gun too.
 

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The Troll Whisperer (Moderator)
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broom_jm -

I've got a Swede Mauser rechambered to 6.5x257 AI. Basically the 7x57 necked down to .264 and blown out to Ack Imp. Probably could have achieved the same result by AI'ing the 6.5x55, but it's always fun to have something to talk about at the range with the other shooters!

Oh, yeah - it shoots the 129 gr Hornady Interlocks and SST's into sub-MOA groups.
 

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There is a commercial 6.5x57, a friend has a Dakota 10 chambered for it. He says its you can't make the brass from 7x57, but when I looked up both cartridge drawings it seemed like a pretty easy sizing and fireforming issue to me.
 

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Discussion Starter #16
I read that the 25 wssm doesn't burn barrels like the smaller ones. Maybe im just a little bit of a winchester fan. Oh about a 257 Roberta? I see it has same. 473 rim dia as the 30-06 family. But there is a good selection of factory rifles in that caliber
 

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Well you are discussing the difference between 6.5-284 and the .25wssm. You are not discussing the same things if you want the better of the two, especially if you are considering the .25 on the AR platform. To be honest, I don't have personal experience with the 6.5-284, but I do know several guys who have them and swear by them for hunting and target shooting purposes. I do have an Olympic upper chambered for the .25 wssm. First off, if you don't reload or do not intend to reload, don't go this route. Factory loaded ammo currently available is mostly too long to be used in the AR platform. You are restricted to the COL that will fit in the AR magazine and this will not allow you to use the heavier bullets of the quarterbore's arsenal. Anything over 100 gr bullets must be seated deeper in the case which makes you lose powder capacity, which in turn reduces velocity. You can achieve excellent accuracy and good velocity, but not as high as with a bolt action variant for this cartridge. You are mostly limited to 100 or 110gr bullets in the AR platform for the .25 WSSM. You can load larger, but with reduced velocity.

Also, you are not being equal with your consideration of bullets. In my opinion you will get better long range stability from the 6.5mm (.264) bullet than the .257 bullet. I shoot, and love, my .260 Remington, but I also like my .25 caliber cartridges as well. The 6.5-284 would be similar to a .260 Magnum, with the true meaning of magnum, like the difference between .22lr and .22 mag. The .25 wssm is good for lighter ranged bullets, the largest your can really get is 120gr and is not suitable for the AR platform. The 6.5mm is available all the way up to 160gr pills, but are not really necessary for N. American game.

If you want the new and cool AR then the .25 WSSM or the newest .30 OSSM would be your ticket. If you want a good bolt gun then I would say you would be hard pressed to beat a 6.5-284. Of course there are numerous others that are equal in power and versatility, but if you want an odd named cartridge this would be a good one. Neither cartridge is going to be cheap to by factory ammo for neither will either be easily found at the local Wal-Mart in the future. Honestly, I would look at either of these two cartridges as a reloading endeavor, with the availability of brass for either to be the same. Both can be made from other cartridges, but WSSM brass is much harder to work, as I can attest.

If I hadn't gotten bit by the .50 Beowulf bug several years ago I would never have gotten into AR's because I didn't have a use for .223. But since then I have found the black gun to be quite intriguing and fun, although a different beast entirely than a bolt gun, especially with these new aged uppers with larger cartridges.

With equal bullet weights between the 6.5-284 on a bolt gun and the .257 wssm on the AR platform, I would say your velocities would most likely be higher with the larger diameter 6.5 simply because of the case volume and the ability to achieve higher pressured loads on the bolt action. With the AR you are limited to COL because of the magazine and you have to be careful not to over pressurize the gas system.

In closing, I will say that I do believe that the WSSM cartridge in any caliber is the optimum platform for a big game hunting AR. They are fast, sexy, and will definately get the job done; within reason. I think the AR is what will save the wssm cartridges since Winchester dropped them from their production line. I doubt if Browning will continue them much longer either.
 
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