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OP
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I'm looking for load data for Hornady 55gr flat base SPs using RL-15. I have a 16" barreled AR. Powder is iffy and my wife found some RL-15 out of state. I wish I could find TAC but these days I'm lucky to find any powder.
The Karma bus always has an empty seat when it comes around.- High Brass
There's battle lines being drawn
Nobody's right if everybody's wrong
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Joined: Dec 2004
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Campfire Outfitter
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Campfire Outfitter
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Here's what QuickLOAD computes. It looks as though you won't get a good clean burn...at least according to this software. Who knows, though...it may work better than projected. Please do not regard this as you would published data, it is only a guideline! Cartridge : .223 Rem. (SAAMI)
Bullet : .224, 55, Hornady SP 2265
Useable Case Capaci: 26.666 grain H2O = 1.731 cm�
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-15
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% 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
-20.0 88 21.60 2616 836 27289 5707 80.5 1.319
-18.0 90 22.14 2684 880 29236 5911 82.0 1.283
-16.0 92 22.68 2753 925 31322 6112 83.6 1.249
-14.0 94 23.22 2822 972 33571 6308 85.0 1.215
-12.0 97 23.76 2891 1021 35996 6499 86.5 1.182
-10.0 99 24.30 2960 1070 38615 6684 87.8 1.147
-08.0 101 24.84 3030 1121 41444 6863 89.2 1.112
-06.0 103 25.38 3100 1174 44505 7034 90.4 1.078
-04.0 105 25.92 3170 1227 47822 7198 91.6 1.045 ! Near Maximum !
-02.0 108 26.46 3241 1283 51405 7352 92.7 1.013 ! Near Maximum !
+00.0 110 27.00 3311 1339 55257 7496 93.8 0.982 !DANGEROUS LOAD-DO NOT USE!
+02.0 112 27.54 3382 1397 59430 7630 94.8 0.952 !DANGEROUS LOAD-DO NOT USE!
+04.0 114 28.08 3453 1456 63960 7753 95.7 0.924 !DANGEROUS LOAD-DO NOT USE!
+06.0 116 28.62 3523 1516 68889 7863 96.5 0.896 !DANGEROUS LOAD-DO NOT USE!
+08.0 119 29.16 3594 1578 74259 7961 97.2 0.869 !DANGEROUS LOAD-DO NOT USE!
+10.0 121 29.70 3665 1641 80125 8044 97.9 0.843 !DANGEROUS LOAD-DO NOT USE!
Results caused by � 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba 110 27.00 3498 1494 67005 7609 98.6 0.907 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 110 27.00 3076 1156 44289 7034 85.5 1.080
Don't be the darkness.
America will perish while those who should be standing guard are satisfying their lusts.
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Joined: Oct 2003
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Campfire Outfitter
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OP
Campfire Outfitter
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Thanks for the info. If it doesn't get a clean burn it probably isn't a good idea to use it in a gas gun?
The Karma bus always has an empty seat when it comes around.- High Brass
There's battle lines being drawn
Nobody's right if everybody's wrong
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Joined: Dec 2004
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Campfire Outfitter
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I'm not sure the % burn would have much to do with how dirty your gas system gets, you could try it and find out. If you don't like the Re15 you should be able to swap it for something else easily enough. I haven't seen Re15 available for a long, long time and I know there's lots of folks who would love to get their hands on some.
Don't be the darkness.
America will perish while those who should be standing guard are satisfying their lusts.
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Joined: Mar 2004
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Campfire Outfitter
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Campfire Outfitter
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It works GREAT in a gas gun! Start with about 25gr.
It may not be the velocity champion, but it will shoot bugholes with a 50-55gr bullet.
Islam is a terrorist organization.
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Joined: Oct 2003
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Campfire Outfitter
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OP
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Thanks for the input! If it doesn't work out my son has a .308 and uses RL-15. Anyone close to the Bass Pro at Myrtle Beach, SC, they have several different IMR and RL selections. I'm not sure what they have as my wife was reading them off on the phone to me. I was wanting TAC or CFE 223 (good luck right?). The sad thing is I saw 2 cans of TAC on a shelf a while back and passed on it because I didn't have the AR then and thought it was wrong to buy it since the only cartridge I had that could have used it then was my 350 mag. 
The Karma bus always has an empty seat when it comes around.- High Brass
There's battle lines being drawn
Nobody's right if everybody's wrong
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Joined: Jan 2004
Posts: 4,218
Campfire Tracker
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Campfire Tracker
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Posts: 4,218 |
Dad, the H-4895 is also a good, clean burning powder with 55gr bullets in 223 in my experience. Probably won't go through a powder measurer worth a blue monkey flip though.
Karma and Trouble have busses, and there's always an empty seat.
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Joined: Jan 2004
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Campfire Tracker
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Campfire Tracker
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Post script, if I couldn't find TAC, I'd try to find Hodgdon Benchmark.
Karma and Trouble have busses, and there's always an empty seat.
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Joined: Dec 2004
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Campfire Outfitter
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Campfire Outfitter
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I'll second the Benchmark idea, and I'll also say I've used H4895 with 60-grain Partitions and seen excellent results. I haven't tried it with 55-grain bullets, though. I have used Benchmark with 50-grain V-Max and Ballistic Tips and that worked real well for me in a bolt-action .223. Benchmark meters nicely, too.
Don't be the darkness.
America will perish while those who should be standing guard are satisfying their lusts.
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Joined: Mar 2004
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Campfire Outfitter
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Campfire Outfitter
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For the ranges that 55gr bullets are used, it doesn't matter if a powder meters well or not. Varget, for instance, will pile them all into tiny groups even if the charges vary +-.2 or .3 gr.
Islam is a terrorist organization.
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Joined: Nov 2007
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Campfire Ranger
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Campfire Ranger
Joined: Nov 2007
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I have had great results from RL-15 pushing 68 gr HPBTs in my 223 bolt gun. It's a little slow for 55s (you're more likely to run out of case capacity than hit pressure signs) but I am sure it'll function beautifully for ya.
I haven't had issues w/ metering; it flows well enough.
BLC-2 is another that may be worth trying?
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Joined: Aug 2008
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Campfire Regular
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Campfire Regular
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Never used RL15 in the 223, but it's just magic in a 22-250 or 22BR.
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Joined: Mar 2002
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Campfire Outfitter
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I use it with 75 amax's...55's get Benchmark!
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