280ai vs 284 Winchester

COBrad

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Just ran out to the bench to shoot one more with the H4350. Not quite as good as yesterday but still .31 moa at 130 yards. Im going to call this the load for this bullet no matter what the chrono says.
 

azrumshooter

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Have owned rifles chambered in 284 Win since 1983. Have rebarreled the original SA Ruger several times. Had mag box lengthened to accept a loaded round with an OAL of 3.050". Own a custom reamer with a .317" neck requires a bit of neck turning. Throat is a 1 degree 30 min angle and is setup for the 168 VLD to engage lands .010". Current barrel is 23" long, a rechambered Rem 700 7-08.

Recently acquired a LA Rem also chambered in 284 Win with a .3165" neck also a 1 1/2 degree throat angle. Use same setup with my K and N neck turning tool. This one has a 28.5" 1 in 7 3 groove lilja and shoots 180 berger target hybrids into bugholes.

Best results will be with H4350 or if you want a bit more velocity, RL-17.

LA Rem 284: 180 target hybrid and 52 gr of RL-17 2800 fps

Currently SA 284:

168 Berger VLD and RL-17: : 52 gr RL-17 fed 210 match brass neck turned for .310” neck OD Reamer neck .317” Loaded ammo is .310” velocity 2925 fps
120 Nosler ballistic tip and RL-17: 58 gr of RL-17 3457 fps. seated bullet without changing seater die setup that was used with 168 VLD.



Generally you can get 3000 fps with a 140 57 gr H4350 and 2900 with 52-54 grs H4350 with a160 gr bullet using a standard SA magazine length around 2.85" or so. Or way back when it didn't exist IMR 4350.

Bob Hutton and Fred Huntington played with this cartridge when it first came out in 1963. Their pet load was 57 or 58 gr of IMR 4350 with a 140 partition for velocity around 3000 fps.



Anyone reading this should realize every firearm is different in what it can safely handle. Please work up with care.




TiminTerra PM me for specific load with a variety of bullets.
Great information Ross 👍
 

VLD Pilot

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Have owned rifles chambered in 284 Win since 1983. Have rebarreled the original SA Ruger several times. Had mag box lengthened to accept a loaded round with an OAL of 3.050". Own a custom reamer with a .317" neck requires a bit of neck turning. Throat is a 1 degree 30 min angle and is setup for the 168 VLD to engage lands .010". Current barrel is 23" long, a rechambered Rem 700 7-08.

Recently acquired a LA Rem also chambered in 284 Win with a .3165" neck also a 1 1/2 degree throat angle. Use same setup with my K and N neck turning tool. This one has a 28.5" 1 in 7 3 groove lilja and shoots 180 berger target hybrids into bugholes.

Best results will be with H4350 or if you want a bit more velocity, RL-17.

LA Rem 284: 180 target hybrid and 52 gr of RL-17 2800 fps

Currently SA 284:

168 Berger VLD and RL-17: : 52 gr RL-17 fed 210 match brass neck turned for .310” neck OD Reamer neck .317” Loaded ammo is .310” velocity 2925 fps
120 Nosler ballistic tip and RL-17: 58 gr of RL-17 3457 fps. seated bullet without changing seater die setup that was used with 168 VLD.



Generally you can get 3000 fps with a 140 57 gr H4350 and 2900 with 52-54 grs H4350 with a160 gr bullet using a standard SA magazine length around 2.85" or so. Or way back when it didn't exist IMR 4350.

Bob Hutton and Fred Huntington played with this cartridge when it first came out in 1963. Their pet load was 57 or 58 gr of IMR 4350 with a 140 partition for velocity around 3000 fps.



Anyone reading this should realize every firearm is different in what it can safely handle. Please work up with care.




TiminTerra PM me for specific load with a variety of bullets.
Not only good info but very accurate info. The numbers almost duplicate mine. 53 grains of RL17 for me with 162s gives me 3000 fps in a SA. 52 grains roughly 2940+/-.
 

VLD Pilot

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Sometimes....there is just TOO MUCH THOUGHT...goes into these equations! Gosh...I have something so great....I wonder WHY! If I ask for enough outside thought....I bet I can make it Worse!
Ya true but it gives me personally something to do. I'm someone that has personal goal for most every round I shoot. 3000 fps is that number I strive for in most cases. Seems for what I use most of my rifles for, that number gives me good results at any distance I shoot the rifle. Mostly applies to the mid range cartridges i shoot. It's just a personal number that I strive for in my bullet weights I tend to use the most. They tend to all be heavy for caliber bullet weights. Under the .243, that number isn't as important to me as I use a bigger variety of bullet weights.
 

skipglo

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Ya true but it gives me personally something to do. I'm someone that has personal goal for most every round I shoot. 3000 fps is that number I strive for in most cases. Seems for what I use most of my rifles for, that number gives me good results at any distance I shoot the rifle. Mostly applies to the mid range cartridges i shoot. It's just a personal number that I strive for in my bullet weights I tend to use the most. They tend to all be heavy for caliber bullet weights. Under the .243, that number isn't as important to me as I use a bigger variety of bullet weights.
Well said!
 

VLD Pilot

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Here is my thought. You can always back the 280AI down to slower speeds but you can never speed up the standard 284 to reach the top of the 280AI speeds.
True statement but that applies to all cartridges. The difference between the 284 and 280AI are so close that IMO, pick which one you prefer personally as you'll not tell much difference really. If you want a little more performance from a 284, go with the Shehane or use RL17. I haven't heard much info on RL17 in a .280/280AI but in the standard 284 win, it easily achieves 3000 fps with 180s.
 

Turnbolt53

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Dec 18, 2018
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SE Wisconsin
True statement but that applies to all cartridges. The difference between the 284 and 280AI are so close that IMO, pick which one you prefer personally as you'll not tell much difference really. If you want a little more performance from a 284, go with the Shehane or use RL17. I haven't heard much info on RL17 in a .280/280AI but in the standard 284 win, it easily achieves 3000 fps with 180s.

You must have a long action with a looooooong barrel. Nosler's max load for the 284 with a 175 clocks 2641, and Barnes max load for the 160 gets 2679 fps.

Both in 24" barrels.
 

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