Thread: 7mm Rem Mag or 284 Win.

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

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.

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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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.

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

Originally Posted by Gibo

That wont end well

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.