Thinking of building a hunting rifle in .284 Shehane or straight .284. Could I get some feedback on velocities out of a 26" barrel with 180's. Most everything I find on velocities of the Shehane are the Fclass guys running 30-32" barrels. Thanks
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This is a Bartlein 26" barrel in straight 284 with Berger 180 hybrids. I'm in the low mode here with H4831SC. You could push it more than this, I chose the low node for a little more barrel life and because it shot so well.
How fast are the lighter bullets like 162 eldx? Thinking about punching out 7mm-08 to 284 win on stock Tikka ultralight 22" barrel
Mostly because you need to run it in a long action to get the full benefit of the round using the heavier bullets. Most of the shooters here prefer short action unless they plan to run the big magnums.I love the 284 and it will be my next build. I've always wondered why it doesn't get more attention in this community.
Probably assuming 2.96 magsIs it practical to load the 168's in the .284 at 2.815" OAL?
Greg
I think you're right with this.doesn't offer much over the 7SAW velocity wise. seems like a waste of a long action to me unless you have a tikka or something that it's going on
I don’t think they could tell the difference ?For hunting? What about straight up 6.5x284 lot of brass including lapua..ive always winder which is better for hunting between the..white tails..
Probably assuming 2.96 mags
Thank you. I'm asking to figure out if the .284 might work as an AR-10-ish chambering, hence the 2.815 length limit.
I'm figuring a rifle+ length gas system. Any constructive thoughts on the concept would be welcome.
Thanks again.
Greg
Are you using 30-06 or 300 wm mags and how do they feed?Have a 26” and a 28” straight 284, the 26 loads where 4831sc 180 eldm was maxed around 2850 but accuracy was better around 2800. The 28 I tested 4831 and RL17, same 180 eldm was around 2900 again accuracy better around 2800, rl17 maxed up near 2950+ accuracy better down around 2850-2875. All these out of long action 3.225” (28”) on the one and ~3.24” on the other (26”).
Will the rebated rim cause feeding issues?Thank you. I'm asking to figure out if the .284 might work as an AR-10-ish chambering, hence the 2.815 length limit.
I'm figuring a rifle+ length gas system. Any constructive thoughts on the concept would be welcome.
Thanks again.
Greg
have you looked at the 7SAW with the .045 freebore reamer? i know the 162 ELDM sits at 2.850 with itNo idea; hence, I ask. But the .30AR seems to run OK with one (...or does it?).
BTW, I'm kinda hating Rem for changing the bolt face diameter to something hokey. Personally, I think they stepped on it right there; a small capacity 30 with a .473 bolt face diameter would have had me by the short and curlies.
The 7CM piques my interest, but since I already use 7-08 brass for my .260, I guess going with 7-08 has possibilities.
But it doesn't have the case capacity of the .284.
I wouldn't even be considering the .284 except that I really liked the .280 Rem when I had a pair on loan. I was convinced I'd never get that into an AR, and am definitely not going NEMO (just too much gun for me).
But if the .284 could fit and run in an AR-10 setup, my interest piques yet again.
Greg
This should work work a lot better in the AR10 platform if it will feed reliably due to shoulder angle. You also need to use small primer brasshave you looked at the 7SAW with the .045 freebore reamer? i know the 162 ELDM sits at 2.850 with it
or headstamped brassThis should work work a lot better in the AR10 platform if it will feed reliably due to shoulder angle. You also need to use small primer brass
Quick Load program works very well for all calibers bullet weights and powder combinationsThinking of building a hunting rifle in .284 Shehane or straight .284. Could I get some feedback on velocities out of a 26" barrel with 180's. Most everything I find on velocities of the Shehane are the Fclass guys running 30-32" barrels. Thanks
Just curious but what's the purpose for this rifle build? I'm intrigued by the idea.View attachment 7001150
This is a Bartlein 26" barrel in straight 284 with Berger 180 hybrids. I'm in the low mode here with H4831SC. You could push it more than this, I chose the low node for a little more barrel life and because it shot so well.
Just curious but what's the purpose for this rifle build? I'm intrigued by the idea.
It would probably be quite an elk cartridge!Thats a great question.. short answer is, for leisure steel shooting to 1200yds and to find out if I could get it to run in a Tikka long action configuration. I actually started out in my PRS journey with it, but like eveyone else I opted for a lighter recoiling cartridge.
I still love this cartridge. When the barrel is shot out I will rebarrel to 284 again, but lighter contour for hunting.
Well, you could always rebarrel a Garand with an adjustable gas block to .280.ElvisUSMC; Thanks plenty. This is the sort of info I was looking for. I was thinking on the outside chance, and I can see now that it was a pipe dream.
My goal was to cobble up a 7mm Semi for extended distances, and I was exploring the claims that the .284 was designed as a short action sorta-magnum. Apparently that claim makes less sense with the LR-suited bullets. My fault for falling in love with the 280 Rem, then looking to stuff that kind of performance into an AR-10-ish package. Not in the cards.
More importantly, the idea of a quick followup at extended distances falls flat, since the extended TOF allows the bolt rifle the opportunity to fill that niche well enough.
Your common sense dissection has helped me immensely in understanding that some dreams may end in nightmares.
Greg
This is getting more and more complex, I'd really like to get back to the original questions, regarding the .284 Win.
Shoulder angle considerations, special chamberings, and small primer cases are not very interesting to me at this stage.
FWIW, if my option is for the 7CM, I'd just as soon go with the 7-08.
But again, I was looking for the .284's additional case capacity, and that's not drawing a lot of support from the forum.
I think I'm going to retire to my fortress of solitude and reconfigure my priorities.
Greg
Well, you could always rebarrel a Garand with an adjustable gas block to .280.
NoIs it practical to load the 168's in the .284 at 2.815" OAL?
Greg
Old thread I know but, Pretty much my identical build. 25" Bartlein 9T 5R, Rem 700 SA, Manners T4. Running 162 Amax/ELDs at 3000 fps with an OAL of 2.975. Running RL17 (53.0 grains). Not a hot load and very accurate. It's just not practical running 180s in a SA 284. Uses up way too much case capacity. My 284 LA OAL is close to 3.2". Getting 3000 with 180s. 29" barrel.Here is a good article that really gets into the weeds of a .284win short action build.
http://www.6mmbr.com/gunweek095.html
Greg, I don’t think a large frame AR build in .284 is going to work out all that well. That cartridge does best when you can get a 160-180gr bullet seated out of the case a bit. That requires a modified Rem700 (feed well area milled out) or a custom action like a Defiance, ARC, etc with a larger feed well. Also a ACIS style mag without the binder plate will allow a COAL of 2.9xx”, depending on brand. An AR mag, even the SR/LR mags (Armalite pattern not DPMS) won’t get you that COAL.
Another critical consideration for an AR platform is gas. The .284 has a much larger capacity vs a 7mm-08/7CM/7SAW, you will have that extra gas to deal with, for proper cycling of your action. Bolt timing, ejection, and feeding is going to be messed up. The bolt carrier will most likely be slamming into the back of your action as well, which is obviously bad. You would most likely need a custom gas port, gas block, rifle length gas tube, and buffer assembly, as well as a lot of tuning to manage that. There would probably be feeding issues with a non-modified AR mag as well with the larger body of the .284.
Keep in mind the .284 is essentially the primagenitor of the Short mag, a large frame AR isn’t designed for those forces. You only have so much metal between the chamber wall and the outside of the barrel in any AR profile barrel and with a high pressure cartridge I would be concerned. 5.56mm AR’s still have chamber ruptures or catastrophic explosions from time to time. Yes, “thumper” cartridges like the .450 Bushmaster, .500 Beowulf have thin chamber walls but they aren’t high pressure cartridges. Personally I wouldn’t be comfortable with that.
Hope this helps