Thread: Reinventing the .284 wheel

120 NBT. 3K. 18" barrel. CFE 223 powder (my go to, and kills good out to the 450 yards Ive used it). My Grandson is in love with it.
140 Berger same rifle, 2.8K. Shoots fine. CFE 223 powder

Originally Posted by i41do2

I'm getting 2900FPS out of a 22" weatherby ultralight pushing 139gr SSTs
Using 2208 at max book value, think it was 43.5gr

I load 43gr in mates one with ssts. He gets fast kills near and farish. I'm Coming to think it's a good place to be

Are these loads in a 7mm08? Some seem low for a 284.
I’m at 2670 in an 08.


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Originally Posted by Danny

Are these loads in a 7mm08? Some seem low for a 284.
I’m at 2670 in an 08.


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Yeah 7mm08 loads i believe mate. He wants to run it as a 7mm08 for now.

Good one. The way I look at it now unless you can seat out longer like some actions above then the Ackley may be a better option than a 284.

Currently using a SA Sako which is a limiting factor for me but there is a fine line between being over-bore and that of using a longer action which really depletes the main likeable features of some of the 260/ 284/ 7mm08 types.


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My 284 is running a 19 inch barrel and 2775 with 162 eldm's over win760/h414 in norma brass.

Accounted for a fair few animals now and never had one go more than a couple of steps.

20" barrel
56.2gr Hodgdon superformance
160gr TMK
2830fps.

Crunch the numbers on that

My Blaser 7-08 (retired) 18"
RL-15 43.4g, 140 NBT 2905fps, Lapua brass, Fed 210M

Blaser 284Win 20"
VV N160 55.0g, 160TGK, 2765fps, Petersen brass, CCI BM2

Both shoot better than me.

Got the 7mm08 scoped and running today, had some 140gn PPU to get from bore sighted to on target, 1.5 moa from that stuff, had some 139SST Superformance, it went moa, cobbled together some 120gn Sierra PH , that went moa, and some 120gn NBT loaded to 2 different lengths, managed 3/4 from them, fair honking along from a full length barrel - might look at the 150 Berger and 160TMK next, have tons of 2209 and 2206H on hand, am optimistic.

Wasn't properly set up for solid shooting position so a fair amount of shooter error today but am confident that better setting up and a little more development the 120NBT will be a goer if kept as a 7mm08, but the heavies might change my mind.

Have never run 7mm08 before, it better kill as well (and a bit further) as my .243!

Originally Posted by Nick-D

My 284 is running a 19 inch barrel and 2775 with 162 eldm's over win760/h414 in norma brass.

Accounted for a fair few animals now and never had one go more than a couple of steps.

How much W760/414 are you running? That’s a decent speed for 19 inch.

Running 2740 with 58 grains of 2213sc and 162 ELD-Ms from a 22” barrel. Necked up and neck turned 6.5-.284 Lapua brass. Mine was reamed from 7-08 by Dave Ward in Dovedale. I could go faster with other powders but 2213sc gives great accuracy and low pressure.

Originally Posted by Forestry

How much W760/414 are you running? That’s a decent speed for 19 inch.

I had the same length barrel and pills getting very similar speed with 2209. Thought that speed was about the norm?

I'm running 162gr amax in my 18inch 7mm08 @ 2540fps with 2208.
162gr Amax in my 20inch 284 @ 2840fps with H414

Originally Posted by Danny

Good one. The way I look at it now unless you can seat out longer like some actions above then the Ackley may be a better option than a 284.

Currently using a SA Sako which is a limiting factor for me but there is a fine line between being over-bore and that of using a longer action which really depletes the main likeable features of some of the 260/ 284/ 7mm08 types.


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T3 solves that simply by changing out the bolt stop and giving it a long mag, single stack feed from the T3 mag solves potential feed issues other actions/feed can create. In this case, the rifle was chosen specifically to suit the cartridge plan.

Originally Posted by 257weatherby

Got the 7mm08 scoped and running today, had some 140gn PPU to get from bore sighted to on target, 1.5 moa from that stuff, had some 139SST Superformance, it went moa, cobbled together some 120gn Sierra PH , that went moa, and some 120gn NBT loaded to 2 different lengths, managed 3/4 from them, fair honking along from a full length barrel - might look at the 150 Berger and 160TMK next, have tons of 2209 and 2206H on hand, am optimistic.

Wasn't properly set up for solid shooting position so a fair amount of shooter error today but am confident that better setting up and a little more development the 120NBT will be a goer if kept as a 7mm08, but the heavies might change my mind.

Have never run 7mm08 before, it better kill as well (and a bit further) as my .243!

120 NBT @ 3K is a real step up from the .243 - you won't want for more out to 400 yards.