I noticed the balistics look pretty good for a short action before the short mags showed up. I was thinking of possibly rechambering a 7mm08 to the 284.
Some of you guys a lot about the 284 so chime in please.

I've never owned a .284, but I can't see a point in rechambering a 7-08 or 7x57 to one. Not much to gain except a little more problem in finding cases to load. It just doesn't do anything better than a 7x57 IMO.

I had one in a Winchester 100. Loved it. Wish I never sold it.

The only 'problems' IMO will be feeding and magazine capacity. Perhaps, if your action is short you might have a problem with seating of the bullets. The 284 is longer I believe (did not look up the lengths sorry) If you get that taken care of easily go for it.

I think the 284 is a twin to the 280 Remington. While I like the 284, I prefer the 280 mainly due to minor things such as brass, feeding, magazine capacity. Some would say the short bolt throw is an advantage and is for some but it makes no difference to me.

Oh yeh, I have a 7x57 Classic and like that a lot also.

Another thing that I was curious about is why it got real popular as a 6.5 284 and the standard 284 died out.

quote:

Another thing that I was curious about is why it got real popular as a 6.5 284

Long range accuracy.

Thanks, it is nice to have a sounding board when you get a goofy idea. I have 2 of the 7mmo8s and one is a dream rifle that I am afraid to shoot out because it is near perfect in every way. I got the other one for range time and get ideas like the 284. I also toyed with the idea of rechambering the 300SAUm to a 300WSM or rebarreling to a 350 Rem Mag which still may be a very good idea.

Sometimes less is more, I'd want a 24" no less for 284.

I rechambered my Tikka M595 7mm-08 to 284 winchester last year.

In my oppinion this rechamber is well worth it, the 284 is one underated cartridge, expect to get 280 remington performance from your short actioned rifle.

I've also foung most of the reloading data to be way under max, in some cases i'm using 5 grains more powder than stated as max in reloading manuals, without pressure signs.

I think the biggest concern would be the diameter of the cases and how they will feed from the magazine since the 284 is a fatter case.
The length of the 284 is .135 longer than the 7mm-08, so, not really a big concern.

Also, as Tumbo said, the 284 is one underated cartridge, expect to get 280 Remington performance from your short actioned rifle.

If you have a Remington, there are lots of 7mm-08 take-off barrels around that are prime candidates for a rechamber to 284. Performance wise, I think that the 284 falls about equally between the standard 7mm-08 and the 7 WSM/RSUM, 200 fps more than the 7mm-08 and 200 fps below the 7 WSM/RSUM.

I used to be a big 284 user, but decided that the 270 WSM fills the 284 void in a short action bolt action better. In a lever action rifle, it would be hard to beat a Savage 99 in 284 for a non-dangerous game hunting rifle.

Jeff

Thanks and good to see some guys like the performance of the 284. Where do you get the brass. I only found Winchester brass so far but lot of suppliers of 6.5 284. I may have to get another take off barrel and play with it. The take off that I installed on an action back in Dec shoots so good I am having second thoughts about messing with it even though it is a spare just for range time.

I had a 7mm-08, rechambered it to 7x57 AI and then to .284. The performance gains were minimal, but it was fun to play with. Accuracy remained constant throughout the process. I still have all three cartridges in my lineup. The 7x57 AI looks the coolest, but the 7mm-08 is my favorite. I have four of them.

The reason I mentioned OAL as a possible problem is this:

I have a 350 Rem Mag on a 600 action. I consider the action short for the cartridge. However, I have do have some loads to work great.

case length = 2.179 for 350 magnum 2.8" aol
" " = 2.035 for 7mm-08
" " = 2.170 for 284 2.8" oal

It seems possible that the model 7 Remington may be similarily 'short' for the 284. Perhaps for many people it would be fine. However, the form factor (ogive) on some bullets could limit their use.

The one complaint I had regarding the model 100 was the bullets had to be set deeper than I wanted them to be.

I like the 284 just fine. But just wondering why not a 280?

quote:

some guys like the performance of the 284. Where do you get the brass. I only found Winchester brass so far but lot of suppliers of 6.5 284.

I use Lapua 6.5x284 brass, have found it to be the best and to hold slightly more powder than winchester brass.

It is easy to neck up.

I thought about that. What are you using to neck it up?

I have a 284 and it is great, but it is built on a 1909 Argentine. On a short action Remington it would be too long in my opinion. I like the 300SAUM much better or if you like the 7 go to a 7 SAUM. The port on my short action Rem. is 2.625 and the magazine might hold 2.800 max. I don't believe that it will work to its potential. A 6.5x284 is out.
Butch

I had a ruger 7mm08 that i had rechambered to 284,i had a spare magazine with the front cut out wide enough to feed,i also had the feed ramp shortened,i can now seat the bullet length to 3.10 -seating to base of neck with barnes 140 tripple xxx velocity is 3050 with a 20inch barrel. i donot think i could do any better with a saum with a short barrel.

quote:

I thought about that. What are you using to neck it up?

Just a standard neck sizing die, make sure the inside of the necks are well lubricated and you won't have any problems.

quote:

Originally posted by D Humbarger:

quote:

Another thing that I was curious about is why it got real popular as a 6.5 284

Long range accuracy.

Yes - and no.

The regular .284 had a freebore that forced the bullets very deep in the case, and was therefore not very popular for the long range stuff, and not many match bullets for the 7 existed. Today, people have ordered reamers with longer throaths, and using todays hot match bullets, there is really no difference in performance between the two.

If it's a Rem action you can get a Wyatt magazine for the 284 needs a gunsmith to fit it brings OAL out to 3.060" and I think they make one for Win actions. Problem with the standard 284 is getting to use the case capacity if you can you will get velocity in the range of a 280AI. If you look at Hodgdon 2006 reloading manual and look at the data for the 280 and 284 not the 7-08 or 7x57. When you wildcat the 284 case you see 6x284 vs 6x06 or 6.5x284 vs 6.5x06 so you can get to see the real potential of the 284 case. The 284 is what put Ultralight Arms on the map. I shoot a 284,6x284 on a short Rem action, 6.5x284 on a Win action and 280AI on a ULA model 24 action. Well good luck

Tom, my trigger guard only measures 2.820 on my Rem. SA. I don't think that you could cut it that much.
Butch

I also had a Win. M.100 in .284 as my first hunting rifle and took my first 2 deer with it. I thought then that it was a nice combo for my hunting use but, I let my brother talk me out of it on a swap and have never owned another. I now have three 7X57s and they seem to do all I'll ever have need for and with no small amount of class.

Thanks for all the comments. Sounds as though the .284 was a great round that just was not outstanding enough to get popular. Kind of tough with so many great rounds just below it and just above it. A lot of great rounds have lost their sizzle over time but they are still great rounds.

Tough luck for the 284win, as for the dappa 9.3x64B.
A short action 284win mountain rifle and an M98 9.3x64 makes a lot of sense.

quote:

Originally posted by butchlambert:
Tom, my trigger guard only measures 2.820 on my Rem. SA. I don't think that you could cut it that much.
Butch

I did mine on a Rem ADL but they list that you can do it on a BDL also and I'm sure the bottom of the new magazine is crimped to fit the existing BDL since the only machining is altering the receiver, bolt stop and you only have a magazine that hold 3 284 rds. I'm having a Wyatt's extended center-feed magazine box installed on a BDL Rem long action that required receiver and bottom metal modifications. I have a gunsmith do the work so really cann't answer all the tech stuff that goes into fitting one of the magazines other than they work. Alot seem to forget Browning and Ruger made bolt action rifles for the 284.