7mm Rem Mag or 284 Win.

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21-03-2018, 10:35 AM
Troy Tempest

7mm Rem Mag or 284 Win.

Hello chaps

Some input from those in the know would be appreciated. I am in the market for a rifle for Reds out to 500 or so yards using 162 to 168s. I will most likely go to a T3X. I was going to do the 284 Win conversion thing (I have had a 284 before and am familier with the round). But then I thought for the sake of a bit more powder why not just get a 7mm rem mag and be done with it.
I will take the barrel down to 20 or 21 inches max and suppress.
Anyone with a short 7mm Rem Mag out there? Loads, velocity, any input really.

Thanks very much.
21-03-2018, 10:41 AM
Gibo

Pretty sure Doc Watsons was a remmag.

https://www.youtube.com/watch?v=nuiQBuRG7s0
21-03-2018, 10:45 AM
Gibo

https://www.youtube.com/watch?v=GGHJ2BNis_k
21-03-2018, 11:15 AM
chainsaw

If u are going to chop the bbl then 284 every time
21-03-2018, 11:39 AM
Cartman

If 500 yards is your true limit then 284 is more than enough. But you can buy a factory rem mag so save a few hundred on the conversion.

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21-03-2018, 12:21 PM
199p

Remmag

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21-03-2018, 12:43 PM
Kooza

buy what floats your boat mate, if you reload and don't mind getting brass etc 284
I have a chopped R.E.M. Mag and like having the ability to stretch the legs.
21-03-2018, 12:53 PM
Dorkus

I'm running a 7mm Rem Mag with a 21.5" barrel. Spits out Berger 168VLDs at 3050fps
21-03-2018, 12:55 PM
25/08IMP

Quote:

Originally Posted by Dorkus

I'm running a 7mm Rem Mag with a 21.5" barrel. Spits out Berger 168VLDs at 3050fps

Hell only 100fps ahead of my 20" Saum

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21-03-2018, 01:05 PM
Smiddy

20in 300wsm 178gr @ 2920fps

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21-03-2018, 04:04 PM
GWH

I have a basically brand new T3x in 7mm Rem Mag here, still in box with owners manual etc. I purchased it to build a custom rifle on, but im now going in a different direction, so the T3x is surplus to requirements.

It can come with a DPT 20 moa rail and 30mm Weaver rings to suit the rail. Send me a PM if interested.

A 20" 7RM can still push a 162gr at 3k, just as Kooza's and Dorkus's do
https://uploads.tapatalk-cdn.com/201...5940d5159b.jpg https://uploads.tapatalk-cdn.com/201...43fdb425dd.jpg https://uploads.tapatalk-cdn.com/201...1464bbc80e.jpg
21-03-2018, 04:09 PM
gonetropo

the 7 rm
poor hare didnt know what it @1 km
21-03-2018, 04:53 PM
chainsaw

Quote:

Originally Posted by Dorkus

I'm running a 7mm Rem Mag with a 21.5" barrel. Spits out Berger 168VLDs at 3050fps

that's pretty quick out of short bbl. What powder you running @Dorkus ?
21-03-2018, 05:00 PM
Dorkus

Quote:

Originally Posted by chainsaw

that's pretty quick out of short bbl. What powder you running @Dorkus ?

74.5gn ADI2225
21-03-2018, 05:09 PM
199p

mines doing 2960 20" remmag with 162
21-03-2018, 05:17 PM
chainsaw

I'm getting 2940 fps out of 284 22in bbl with 160TMKs & Superformance powder. Another 30 - 40 fps with RL17 but accuracy not as good.
21-03-2018, 08:15 PM
Mooseman

Rem Mag will be easier to get brass for, but ballistics are closely matched, a deer at 500 yards won't know the difference.
21-03-2018, 08:17 PM
Cartman

6.5x284 brass is easy to get simply size and load.

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21-03-2018, 08:35 PM
Shearer

Last issue of NZ Hunter magazine had a good article on the "super pig" chamberings (pros and cons). Worth a read.
21-03-2018, 10:07 PM
HuntGatherRepeat

Went through this myself. Ended up going 7 Rem mag. Much easier to find brass for. Rechambering is an automatic $200 which buys a bit of ammo. Went 22" barrel and brake. My most accurate loads are just under 3000fps.
22-03-2018, 09:56 AM
Beetroot

Quote:

Originally Posted by chainsaw

I'm getting 2940 fps out of 284 22in bbl with 160TMKs & Superformance powder. Another 30 - 40 fps with RL17 but accuracy not as good.

Thats impressive.
Is that on a long or short action?
Have you tried 180gr projectiles with superperformance powder?
22-03-2018, 11:26 AM
chainsaw

Quote:

Originally Posted by Beetroot

Thats impressive.
Is that on a long or short action?
Have you tried 180gr projectiles with superperformance powder?

Yeah, got me smiling. Its built on a Tikka action (was 2506) & TF UM bbl so did not have to piss round with bolt stop etc and plenty of room in the mag. Want to try the 175gn Berger Hunter Elites as next step - but that will have to wait till winter.
22-03-2018, 12:05 PM
Beetroot

Quote:

Originally Posted by chainsaw

Yeah, got me smiling. Its built on a Tikka action (was 2506) & TF UM bbl so did not have to piss round with bolt stop etc and plenty of room in the mag. Want to try the 175gn Berger Hunter Elites as next step - but that will have to wait till winter.

There seems to be a lot of interest in 284 Win lately, if you do any load development make a thread on here.
Whilst I don't need a new rifle in the slightest I am somewhat considering a 284 build. A mate has all the gear to neck up Lapua brass, so makes it easy for me.
22-03-2018, 12:21 PM
GWH

Quote:

Originally Posted by Beetroot

There seems to be a lot of interest in 284 Win lately, if you do any load development make a thread on here.
Whilst I don't need a new rifle in the slightest I am somewhat considering a 284 build. A mate has all the gear to neck up Lapua brass, so makes it easy for me.

Yeah the old 284 win is a pretty effiecient cartridge when run in a long action where you can seat bullets right out to make best use of the full case capacity. I have two 284's a 22" and a 17". The 22" hardly ever gets used now, as the 17" one is much handier and suppresed so just easier all round. And i have a 22" 7mm SAUM.

I like the 284's but honestly going 7 Rem Mag is a whole lot easier. Buy a factory 7RM, and be done with it, brass is easier, no pissing around with necking up 6.5 lapua, no drama with having to neck turn (if you used a tight neck reamer like i did when i did my T3 708 to 284 conversion).

Koozas 20" T3 7RM is near the perfect all rounder really, and very easy and low cost to achieve it. Job done
22-03-2018, 12:54 PM
Danny

Quote:

Originally Posted by GWH

Yeah the old 284 win is a pretty effiecient cartridge when run in a long action where you can seat bullets right out to make best use of the full case capacity. I have two 284's a 22" and a 17". The 22" hardly ever gets used now, as the 17" one is much handier and suppresed so just easier all round. And i have a 22" 7mm SAUM.

I like the 284's but honestly going 7 Rem Mag is a whole lot easier. Buy a factory 7RM, and be done with it, brass is easier, no pissing around with necking up 6.5 lapua, no drama with having to neck turn (if you used a tight neck reamer like i did when i did my T3 708 to 284 conversion).

Koozas 20" T3 7RM is near the perfect all rounder really, and very easy and low cost to achieve it. Job done

a 7RM at 20” vs a 7 Saum at 20”? Any real world difference?
Worth the bang and buck?
I’d have a 284 at 20” over the rem mag any day of my god-forsaken week.
22-03-2018, 01:01 PM
25/08IMP

Quote:

Originally Posted by Danny

a 7RM at 20” vs a 7 Saum at 20”? Any real world difference?
Worth the bang and buck?
I’d have a 284 at 20” over the rem mag any day of my god-forsaken week.

My 20" Saum is running about the same speed as a 20" RM with way less powder.

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22-03-2018, 01:35 PM
Beetroot

Quote:

Originally Posted by GWH

Yeah the old 284 win is a pretty effiecient cartridge when run in a long action where you can seat bullets right out to make best use of the full case capacity. I have two 284's a 22" and a 17". The 22" hardly ever gets used now, as the 17" one is much handier and suppresed so just easier all round. And i have a 22" 7mm SAUM.

I like the 284's but honestly going 7 Rem Mag is a whole lot easier. Buy a factory 7RM, and be done with it, brass is easier, no pissing around with necking up 6.5 lapua, no drama with having to neck turn (if you used a tight neck reamer like i did when i did my T3 708 to 284 conversion).

Koozas 20" T3 7RM is near the perfect all rounder really, and very easy and low cost to achieve it. Job done

The thing I really like about 284 Win like you said is how efficient it is, it seems impossible to use so little powder in comparison to the 7mm RM and 7mm SAUM, yet seems to give up very little velocity comparatively.
Whilst the brass prep is a bit annoying, the case life should be pretty good and barrel life would be good also. Also every man and his dog seems to have a Rem mag.

For a pure hunting rifle, the Rem mag is probably the way to go, but as I'd likely be building a hunting/target/tactical jack of all trades kinda thing, the better barrel life of the 284 appeals to me.
22-03-2018, 01:39 PM
Gibo

Quote:

Originally Posted by Beetroot

The thing I really like about 284 Win like you said is how efficient it is, it seems impossible to use so little powder in comparison to the 7mm RM and 7mm SAUM, yet seems to give up very little velocity comparatively.
Whilst the brass prep is a bit annoying, the case life should be pretty good and barrel life would be good also. Also every man and his dog seems to have a Rem mag.

For a pure hunting rifle, the Rem mag is probably the way to go, but as I'd likely be building a hunting/target/tactical jack of all trades kinda thing, the better barrel life of the 284 appeals to me.

That wont end well :D
22-03-2018, 01:45 PM
Troy Tempest

Thanks very much for the input lads.

I think I will go the 7mm Rem Mag route. Any one have pet loads for 20 inch Rem? Whats the concensus for the best pill from 30 to 500, We do ask alot of a bit of copper and lead!

Cheers

Troy
22-03-2018, 02:28 PM
Beetroot

Quote:

Originally Posted by Gibo

That wont end well :D

You would think not, but it is certainly achievable.
My factory Tikka lite in .260 holds it's own in the Practical shots of Gillies I've done, out shot many purpose built rifles.
Almost shot a perfect score at 600yards the one time I took it to a NRA shoot, bloody suppressor came loose on the 11th shot and I dropped a point.
Barrel get's bloody hot, after 10 shots but it still shoots straight.
22-03-2018, 06:04 PM
199p

Quote:

Originally Posted by Troy Tempest

Thanks very much for the input lads.

I think I will go the 7mm Rem Mag route. Any one have pet loads for 20 inch Rem? Whats the concensus for the best pill from 30 to 500, We do ask alot of a bit of copper and lead!

Cheers

Troy

150lrab is a good place to start mine didnt like em tho
24-03-2018, 07:02 PM
Nick-D

Quote:

Originally Posted by Beetroot

There seems to be a lot of interest in 284 Win lately, if you do any load development make a thread on here.
Whilst I don't need a new rifle in the slightest I am somewhat considering a 284 build. A mate has all the gear to neck up Lapua brass, so makes it easy for me.

I had Buzzmans old 284 out today. 19 bbl running 2760 with 162 eld m's over h414. Grouping 3/4 moa or better out to 600. I like it, but it is a step behind the 7mag velocity wise.
Boots way less though, comfy to shoot even extended strings in the light tikka.