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OP
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I'm getting fairly good groups and a tad over 2900 fps using Nosler 140 Accubonds and H-4350 in my 22" Pac Nor barreled Ruger 77 MK/II.
In your opinion, is that decent, in the ball park velocity? Or should I play around with some other powders. Rhetorical question as I know I will try some other loads when I get the time.
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Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
Posts: 15,647 |
You're in 7-08 range, mild load for the .280...
- Greg
Success is found at the intersection of planning, hard work, and stubbornness.
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Campfire Tracker
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OP
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You're in 7-08 range, mild load for the .280... That is kinda what I'm thinking. I tried RL-19 but wasn't doing much better in velocity or accuracy. I guess I'll have to tinker with something else or maybe I just got a slow barrel????
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Campfire Ranger
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Unless you are shooting out a long ways and if it's accurate no need...
But if you want to maximize the case, you're missing close to150-200 yards on the back end of the bullets performance window in that cartridge....
- Greg
Success is found at the intersection of planning, hard work, and stubbornness.
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Unless you are shooting out a long ways and if it's accurate no need...
But if you want to maximize the case, you're missing close to150-200 yards on the back end of the bullets performance window in that cartridge.... What do you suggest for exploration to gain more?
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Campfire Kahuna
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Campfire Kahuna
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Greg,
150-200 yards at the "back end"?
More like 50 yards. I suspect you're thinking of 150 fps.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Aug 2005
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Campfire Ranger
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Campfire Ranger
Joined: Aug 2005
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Greg,
150-200 yards at the "back end"?
More like 50 yards. I suspect you're thinking of 150 fps. Likely so.... I was texting and driving trying to recall ballistic tables... Depends on how low you want to take the impact though...grin...
- Greg
Success is found at the intersection of planning, hard work, and stubbornness.
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Campfire Ranger
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Campfire Ranger
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H4831SC is my huckleberry in my Wby UL 280. It shoots under 1/4 moa with 140 AB’s @ 3000 fps. The gun is accurate with IMR 4350 too.
A 140 @ 2900 won’t bounce off a Whitetail. I understand wanting to squeeze a certain velocity from your loads. After taking a truck load of W.T.’s & Axis with 2800 fps averaged commercial loads I eventually had to admit that speedy loads didn’t kill them any better than not so speedy loads.
"I never thought I'd live to see the day that a U.S. president would raise an army to invade his own country."
Robert E. Lee
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2900 with a 140 is plenty for anything you are going to hunt in Florida. If it shoots good, run with it.
If you feel the need to get more, you can probably squeeze another 150 fps from it, but your accuracy may go to pot.
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
Posts: 30,950 |
Remember, The SAAMI specs for the 280 are on the low side, so you are closer to book max than you think. Of course, you have to ask yourself how much pressure you are comfortable with in your given rifle: Cartridge : .280 Rem.
Bullet : .284, 140, Nosler AccuBond 59992
Useable Case Capaci: 60.085 grain H2O = 3.901 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350 *T
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.877% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-08.8 96 52.00 2759 2367 49702 10952 95.6 1.158
-07.9 97 52.50 2785 2412 51119 11058 96.0 1.143 ! Near Maximum !
-07.0 98 53.00 2812 2457 52577 11160 96.3 1.128 ! Near Maximum !
-06.1 99 53.50 2838 2503 54077 11261 96.7 1.114 ! Near Maximum !
-05.3 100 54.00 2864 2549 55620 11358 97.0 1.099 ! Near Maximum !
-04.4 101 54.50 2889 2595 57209 11453 97.3 1.085 ! Near Maximum !
-03.5 102 55.00 2915 2642 58844 11545 97.6 1.071 !DANGEROUS LOAD-DO NOT USE!
-02.6 102 55.50 2941 2690 60527 11633 97.8 1.057 !DANGEROUS LOAD-DO NOT USE!
-01.8 103 56.00 2967 2737 62260 11719 98.1 1.044 !DANGEROUS LOAD-DO NOT USE!
-00.9 104 56.50 2993 2785 64044 11801 98.3 1.031 !DANGEROUS LOAD-DO NOT USE!
+00.0 105 57.00 3019 2833 65882 11880 98.6 1.018 !DANGEROUS LOAD-DO NOT USE!
+00.9 106 57.50 3045 2882 67775 11956 98.8 1.005 !DANGEROUS LOAD-DO NOT USE!
+01.8 107 58.00 3071 2931 69726 12028 99.0 0.992 !DANGEROUS LOAD-DO NOT USE!
+02.6 108 58.50 3096 2980 71736 12097 99.2 0.980 !DANGEROUS LOAD-DO NOT USE!
+03.5 109 59.00 3122 3030 73808 12162 99.3 0.967 !DANGEROUS LOAD-DO NOT USE!
+04.4 110 59.50 3148 3080 75945 12223 99.5 0.955 !DANGEROUS LOAD-DO NOT USE! If you are looking for top velocities, RL-26, hands down......providing you can find it.
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
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Out of a 22" barrel your not gonna get much more.
If its shooting good leave it alone
If you want more 280AI.
Last edited by sherm_61; 11/15/19.
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Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2004
Posts: 14,487 |
Remember, The SAAMI specs for the 280 are on the low side, so you are closer to book max than you think. Of course, you have to ask yourself how much pressure you are comfortable with in your given rifle: Cartridge : .280 Rem.
Bullet : .284, 140, Nosler AccuBond 59992
Useable Case Capaci: 60.085 grain H2O = 3.901 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350 *T
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.877% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-08.8 96 52.00 2759 2367 49702 10952 95.6 1.158
-07.9 97 52.50 2785 2412 51119 11058 96.0 1.143 ! Near Maximum !
-07.0 98 53.00 2812 2457 52577 11160 96.3 1.128 ! Near Maximum !
-06.1 99 53.50 2838 2503 54077 11261 96.7 1.114 ! Near Maximum !
-05.3 100 54.00 2864 2549 55620 11358 97.0 1.099 ! Near Maximum !
-04.4 101 54.50 2889 2595 57209 11453 97.3 1.085 ! Near Maximum !
-03.5 102 55.00 2915 2642 58844 11545 97.6 1.071 !DANGEROUS LOAD-DO NOT USE!
-02.6 102 55.50 2941 2690 60527 11633 97.8 1.057 !DANGEROUS LOAD-DO NOT USE!
-01.8 103 56.00 2967 2737 62260 11719 98.1 1.044 !DANGEROUS LOAD-DO NOT USE!
-00.9 104 56.50 2993 2785 64044 11801 98.3 1.031 !DANGEROUS LOAD-DO NOT USE!
+00.0 105 57.00 3019 2833 65882 11880 98.6 1.018 !DANGEROUS LOAD-DO NOT USE!
+00.9 106 57.50 3045 2882 67775 11956 98.8 1.005 !DANGEROUS LOAD-DO NOT USE!
+01.8 107 58.00 3071 2931 69726 12028 99.0 0.992 !DANGEROUS LOAD-DO NOT USE!
+02.6 108 58.50 3096 2980 71736 12097 99.2 0.980 !DANGEROUS LOAD-DO NOT USE!
+03.5 109 59.00 3122 3030 73808 12162 99.3 0.967 !DANGEROUS LOAD-DO NOT USE!
+04.4 110 59.50 3148 3080 75945 12223 99.5 0.955 !DANGEROUS LOAD-DO NOT USE! If you are looking for top velocities, RL-26, hands down......providing you can find it. Truth (as far as I know). Re 26 is the velocity king right of .280 (and probably .270, though I have no experience with the combo) now, by all appearances. Happily, accuracy seems to be available with the elevated velocities. Truth be told, though...even though it feels good to top 3000 fps, it just won't matter. why wouldn't 2850 or 2900 work? Go with the accuracy, wherever you find it. - confessions of a velocity whore-
Don't be the darkness.
America will perish while those who should be standing guard are satisfying their lusts.
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Joined: Jan 2009
Posts: 3,422
Campfire Tracker
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OP
Campfire Tracker
Joined: Jan 2009
Posts: 3,422 |
Remember, The SAAMI specs for the 280 are on the low side, so you are closer to book max than you think. Of course, you have to ask yourself how much pressure you are comfortable with in your given rifle: Cartridge : .280 Rem.
Bullet : .284, 140, Nosler AccuBond 59992
Useable Case Capaci: 60.085 grain H2O = 3.901 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350 *T
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.877% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-08.8 96 52.00 2759 2367 49702 10952 95.6 1.158
-07.9 97 52.50 2785 2412 51119 11058 96.0 1.143 ! Near Maximum !
-07.0 98 53.00 2812 2457 52577 11160 96.3 1.128 ! Near Maximum !
-06.1 99 53.50 2838 2503 54077 11261 96.7 1.114 ! Near Maximum !
-05.3 100 54.00 2864 2549 55620 11358 97.0 1.099 ! Near Maximum !
-04.4 101 54.50 2889 2595 57209 11453 97.3 1.085 ! Near Maximum !
-03.5 102 55.00 2915 2642 58844 11545 97.6 1.071 !DANGEROUS LOAD-DO NOT USE!
-02.6 102 55.50 2941 2690 60527 11633 97.8 1.057 !DANGEROUS LOAD-DO NOT USE!
-01.8 103 56.00 2967 2737 62260 11719 98.1 1.044 !DANGEROUS LOAD-DO NOT USE!
-00.9 104 56.50 2993 2785 64044 11801 98.3 1.031 !DANGEROUS LOAD-DO NOT USE!
+00.0 105 57.00 3019 2833 65882 11880 98.6 1.018 !DANGEROUS LOAD-DO NOT USE!
+00.9 106 57.50 3045 2882 67775 11956 98.8 1.005 !DANGEROUS LOAD-DO NOT USE!
+01.8 107 58.00 3071 2931 69726 12028 99.0 0.992 !DANGEROUS LOAD-DO NOT USE!
+02.6 108 58.50 3096 2980 71736 12097 99.2 0.980 !DANGEROUS LOAD-DO NOT USE!
+03.5 109 59.00 3122 3030 73808 12162 99.3 0.967 !DANGEROUS LOAD-DO NOT USE!
+04.4 110 59.50 3148 3080 75945 12223 99.5 0.955 !DANGEROUS LOAD-DO NOT USE! If you are looking for top velocities, RL-26, hands down......providing you can find it. Truth (as far as I know). Re 26 is the velocity king right of .280 (and probably .270, though I have no experience with the combo) now, by all appearances. Happily, accuracy seems to be available with the elevated velocities. Truth be told, though...even though it feels good to top 3000 fps, it just won't matter. why wouldn't 2850 or 2900 work? Go with the accuracy, wherever you find it. - confessions of a velocity whore- Sounds like good advice....thanks.
Liberalism is a cancer
Support Christian Family values
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Posts: 20,885
Campfire Ranger
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Campfire Ranger
Joined: Mar 2006
Posts: 20,885 |
It is good advice. I rolled a running pig at 400 yards with Remington (green/yellow box) 150 CoreLokt. Those loads averaged 2820fps. Killed lots of animals with that ammo.
"I never thought I'd live to see the day that a U.S. president would raise an army to invade his own country."
Robert E. Lee
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Joined: May 2016
Posts: 3,734
Campfire Tracker
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Campfire Tracker
Joined: May 2016
Posts: 3,734 |
My first .280 , a Ruger 77, 22" doted on IMR 4831 55gr and 139 Hornady. I never chronographed it, but it was most likely 2900 or so. I had a Mod 700 Mountain rifle ( 22") reamed out to the 280 AI ( early 90s) and with R22, I still only got 2950 with the 150NBT. I tried R26 in a 22" .280 a couple years ago, and the rifle didn't shoot it well, but speed was up there! I had a 22" .270 that loved the stuff...you pays your money and you takes your chances, ha. I did get 3000fps with R22 out of a 22 inch .270/140 for my SILs rifle. So, if you work up with R22 in hot weather, you will be OK. In that 280 AI I had, I worked up that 61gr load of R22/150 here in Utah around 40 deg. I went to Texas and shot a Corsican Ram and the bolt stuck, had to really hammer it hard with my hand. When an Ackley does that...wow! ha Good luck to you though.
Last edited by Jim_Knight; 11/16/19.
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Joined: Jun 2005
Posts: 12,323
Campfire Outfitter
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Campfire Outfitter
Joined: Jun 2005
Posts: 12,323 |
I got to 2900 FPS and the 160 gr. Speer with IMR 7828SSC but accuracy wasn't all that great. I tried some long discontinued Winchester WMR that I have a fair supply of and got 2910 FPS with 3/4" groups using the Speer old two core Grand Slams. The load is intended for elk. Frankly, even the 7828 load would have sufficed for an elk hunt considering most of my shots were at 200 yards or less. I just like that WMR load better.
Paul B.
Last edited by PJGunner; 11/17/19.
Our forefathers did not politely protest the British.They did not vote them out of office, nor did they impeach the king,march on the capitol or ask permission for their rights. ----------------They just shot them.
MOLON LABE
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Joined: Jan 2010
Posts: 13,131
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
Posts: 13,131 |
Compare the velocity of your load at 50 yard intervals out to your maximum range to a new load at 150 fps more at the muzzle.
It’s not a game changer.
P
Obey lawful commands. Video interactions. Hold bad cops accountable. Problem solved.
~Molɔ̀ːn Labé Skýla~
Member #547
Join date 3/09/2001
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Joined: Sep 2006
Posts: 23,624
Campfire Ranger
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Campfire Ranger
Joined: Sep 2006
Posts: 23,624 |
Remember, The SAAMI specs for the 280 are on the low side, so you are closer to book max than you think. Of course, you have to ask yourself how much pressure you are comfortable with in your given rifle: Cartridge : .280 Rem.
Bullet : .284, 140, Nosler AccuBond 59992
Useable Case Capaci: 60.085 grain H2O = 3.901 cm³
Cartridge O.A.L. L6: 3.330 inch = 84.58 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Hodgdon H4350 *T
Predicted data by increasing and decreasing the given charge,
incremented in steps of 0.877% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !
Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
% % Grains fps ft.lbs psi psi % ms
-08.8 96 52.00 2759 2367 49702 10952 95.6 1.158
-07.9 97 52.50 2785 2412 51119 11058 96.0 1.143 ! Near Maximum !
-07.0 98 53.00 2812 2457 52577 11160 96.3 1.128 ! Near Maximum !
-06.1 99 53.50 2838 2503 54077 11261 96.7 1.114 ! Near Maximum !
-05.3 100 54.00 2864 2549 55620 11358 97.0 1.099 ! Near Maximum !
-04.4 101 54.50 2889 2595 57209 11453 97.3 1.085 ! Near Maximum !
-03.5 102 55.00 2915 2642 58844 11545 97.6 1.071 !DANGEROUS LOAD-DO NOT USE!
-02.6 102 55.50 2941 2690 60527 11633 97.8 1.057 !DANGEROUS LOAD-DO NOT USE!
-01.8 103 56.00 2967 2737 62260 11719 98.1 1.044 !DANGEROUS LOAD-DO NOT USE!
-00.9 104 56.50 2993 2785 64044 11801 98.3 1.031 !DANGEROUS LOAD-DO NOT USE!
+00.0 105 57.00 3019 2833 65882 11880 98.6 1.018 !DANGEROUS LOAD-DO NOT USE!
+00.9 106 57.50 3045 2882 67775 11956 98.8 1.005 !DANGEROUS LOAD-DO NOT USE!
+01.8 107 58.00 3071 2931 69726 12028 99.0 0.992 !DANGEROUS LOAD-DO NOT USE!
+02.6 108 58.50 3096 2980 71736 12097 99.2 0.980 !DANGEROUS LOAD-DO NOT USE!
+03.5 109 59.00 3122 3030 73808 12162 99.3 0.967 !DANGEROUS LOAD-DO NOT USE!
+04.4 110 59.50 3148 3080 75945 12223 99.5 0.955 !DANGEROUS LOAD-DO NOT USE! If you are looking for top velocities, RL-26, hands down......providing you can find it. Truth (as far as I know). Re 26 is the velocity king right of .280 (and probably .270, though I have no experience with the combo) now, by all appearances. Happily, accuracy seems to be available with the elevated velocities. So, for you & others using or recommending RL-26, what velocities & accuracy have you settled on with it? MM
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Joined: Dec 2004
Posts: 14,487
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2004
Posts: 14,487 |
I'm getting just a touch over 3000 fps out of a 24-inch barrel, shooting a 150 Partition. Groups right at MOA sometimes a little under and sometimes a little over.
I suspect my rifle may benefit from a little bit of skim bedding work.
Don't be the darkness.
America will perish while those who should be standing guard are satisfying their lusts.
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Joined: May 2017
Posts: 1,048
Campfire Regular
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Campfire Regular
Joined: May 2017
Posts: 1,048 |
I’m getting 2900 with 154’s and H4831 out of my 22” Ruger Hawkeye. I get 3040 FPS with 139 and the same powder, FYI... My loads are a tad above published max loads but SAAMI has the .280 data a bit anemic. I’m not advising you need to or should but there is probably room to work up slowly and safely if you feel your gun is safe.
Todd
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Joined: Feb 2012
Posts: 1,563
Campfire Regular
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Campfire Regular
Joined: Feb 2012
Posts: 1,563 |
Why chase the speed with a 140? I am guessing that you aren’t shooting long range. You aren’t really gaining anything.
Why not bump up the bullet weight?
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Posts: 3,422
Campfire Tracker
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OP
Campfire Tracker
Joined: Jan 2009
Posts: 3,422 |
Why chase the speed with a 140? I am guessing that you aren’t shooting long range. You aren’t really gaining anything.
Why not bump up the bullet weight? You are correct on both accounts. Deer hunting in Georgia and Alabama usually shots are not long at all 95% of the time.
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Support Christian Family values
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Campfire Regular
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Campfire Regular
Joined: Aug 2006
Posts: 1,935 |
So, for you & others using or recommending RL-26, what velocities & accuracy have you settled on with it?
MM
I worked up to 61.5 grns with the 160 TBT in a M700 Mountain, but backed down and settled on 60.0 that averaged 2980 fps. I was a little leery since there is no data but plugging into QL it gave me an almost exact velocity prediction at 64k pressure and shoots well in rifle.
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Posts: 1,473
Campfire Regular
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Campfire Regular
Joined: Jan 2009
Posts: 1,473 |
I get right on 2929fps with the 140gn Accubond and Re19 in a 22" barrel. Very good groups so I've never pushed it past there.
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Posts: 10,407
Campfire Outfitter
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Campfire Outfitter
Joined: May 2014
Posts: 10,407 |
In my opinion the 280 was underloaded for the 740 Remington semi-auto - a rifle that I'd never own.
I feel the 280 can be loaded to the same pressure as the 270. My favorite load for my favorite 280 is 162 grain Hornady and 53 grains IMR-4350. There's no sign of over-pressure and I've reloaded some cases more than 10 times with no problem. That load shoots 5 shot sub-MOA.
I have some IMR4451 that I'll be toying with, but IMR-4350 is hard to walk away from.
I prefer classic.
Semper Fi
I used to run with the hare. Now I'm envious of the tortoise and I do my own stunts but rarely intentionally
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