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Joined: Oct 2011
Posts: 59,303 Likes: 49
Campfire Kahuna
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Campfire Kahuna
Joined: Oct 2011
Posts: 59,303 Likes: 49 |
I can't make any sense out of the reloading data for H322 and 52-53 grain bullets in 223. Hodgdon gives a max charge of 23 something, Speer a max charge of 24 something, and I think Sierra maxes at 25 something. Sierra's starting charge is darn near Hodgdon's max, unless I am reading the data wrong.
Don't know how one bullet weight and powder can have a two grain spread in the reloading data for max charges. I have a box of Hornady 53 grain match bullets that I would like to try with H322, but I can't figure out where to start. H322 is a position sensitive powder so you have to be careful when decreasing charges, that said any of those starting charges will be safe, start with you lowest one first and work up from there. It is important to be prudent when reloading, always measure by hand when working up loads and keep measuring by hand when using max loads. Good luck and have fun.
Paul
"I'd rather see a sermon than hear a sermon".... D.A.D.
Trump Won!, Sandmann Won!, Rittenhouse Won!, Suck it Liberal Fuuktards.
molɔ̀ːn labé skýla
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Joined: Jun 2004
Posts: 34,361 Likes: 10
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 34,361 Likes: 10 |
I can't make any sense out of the reloading data for H322 and 52-53 grain bullets in 223. Hodgdon gives a max charge of 23 something, Speer a max charge of 24 something, and I think Sierra maxes at 25 something. Sierra's starting charge is darn near Hodgdon's max, unless I am reading the data wrong.
Don't know how one bullet weight and powder can have a two grain spread in the reloading data for max charges. I have a box of Hornady 53 grain match bullets that I would like to try with H322, but I can't figure out where to start. I tossed out all of my Sierra loading manuals after I found out that they do not have pressure testing equipment. They test the same way you and I do, they guess by reading the fired cases.
Give a man a fish and he eats for a day. Give a man a welfare check, a forty ounce malt liquor, a crack pipe, an Obama phone, free health insurance. and some Air Jordan's and he votes Democrat for a lifetime.
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Joined: Jun 2004
Posts: 34,361 Likes: 10
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 34,361 Likes: 10 |
I can't make any sense out of the reloading data for H322 and 52-53 grain bullets in 223. Hodgdon gives a max charge of 23 something, Speer a max charge of 24 something, and I think Sierra maxes at 25 something. Sierra's starting charge is darn near Hodgdon's max, unless I am reading the data wrong.
Don't know how one bullet weight and powder can have a two grain spread in the reloading data for max charges. I have a box of Hornady 53 grain match bullets that I would like to try with H322, but I can't figure out where to start. I tossed out all of my Sierra loading manuals after I found out that they do not have pressure testing equipment. They test the same way you and I do, they guess by reading the fired cases. Here's an issue. Most of what I see and what people say is based on the AR-15. The thing is AR-15's have one of three chambers typically. A NATO chamber, a Wylde or a Compass Lake. mine is an actual Sammi spec 223 chamber, and seemingly rather tight at that. My lead is one hell of a lot shorter than those.
I tried to chamber an empty that was fired in the Windham AR, not even close. Yes. A true .223 chamber and 26" barrel is a good bit different:
Cartridge : .223 Rem. (SAAMI)
Bullet : .224, 68, Hornady BTHP M 2278
Useable Case Capaci: 24.415 grain H2O = 1.585 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Hodgdon H322
Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.273% 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
-22.7 78 17.00 2411 878 27213 4794 93.1 1.505
-20.5 80 17.50 2476 925 29252 4948 94.3 1.462
-18.2 82 18.00 2539 974 31442 5095 95.3 1.421
-15.9 85 18.50 2603 1023 33796 5232 96.3 1.381
-13.6 87 19.00 2666 1073 36328 5361 97.2 1.343
-11.4 89 19.50 2729 1124 39051 5479 97.9 1.302
-09.1 92 20.00 2791 1176 41983 5587 98.6 1.262
-06.8 94 20.50 2853 1229 45143 5684 99.1 1.223
-04.5 96 21.00 2914 1282 48550 5769 99.5 1.186 ! Near Maximum !
-02.3 98 21.50 2974 1335 52228 5842 99.8 1.151 ! Near Maximum !
+00.0 101 22.00 3034 1390 56204 5902 99.9 1.117 !DANGEROUS LOAD-DO NOT USE!
+02.3 103 22.50 3093 1444 60485 5950 100.0 1.084 !DANGEROUS LOAD-DO NOT USE!
+04.5 105 23.00 3151 1499 65085 5989 100.0 1.053 !DANGEROUS LOAD-DO NOT USE!
+06.8 108 23.50 3209 1554 70058 6026 100.0 1.023 !DANGEROUS LOAD-DO NOT USE!
+09.1 110 24.00 3266 1610 75443 6060 100.0 0.995 !DANGEROUS LOAD-DO NOT USE!
+11.4 112 24.50 3322 1666 81283 6092 100.0 0.967 !DANGEROUS LOAD-DO NOT USE!
Results caused by ± 3% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 3% relative to nominal value:
+Ba 101 22.00 3070 1423 59459 5817 100.0 1.094 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 3% relative to nominal value:
-Ba 101 22.00 2993 1353 52971 5964 99.5 1.142 ! Near Maximum !
I'm trying to figure out why it calls 22 grains dangerous when I shoot 22.7 grains with no issue. Take a fired case and weight it, fill it with H2O and weigh it again. Subtract, this is the case capacity in grains of H2O that Quickload needs to be more accurate.
Give a man a fish and he eats for a day. Give a man a welfare check, a forty ounce malt liquor, a crack pipe, an Obama phone, free health insurance. and some Air Jordan's and he votes Democrat for a lifetime.
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Joined: Jun 2004
Posts: 34,361 Likes: 10
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 34,361 Likes: 10 |
Here's an issue. Most of what I see and what people say is based on the AR-15. The thing is AR-15's have one of three chambers typically. A NATO chamber, a Wylde or a Compass Lake. mine is an actual Sammi spec 223 chamber, and seemingly rather tight at that. My lead is one hell of a lot shorter than those.
I tried to chamber an empty that was fired in the Windham AR, not even close. This could indeed be caused by chamber dimensions, but it can also be caused by the the cycling of the Semi-Auto action. In a semi-Auto the bolt can unlock and eject the case before it has a chance to fully retract from it's expanded dimensions. The net result is that some amount of additional expansion frequently occurs in a case fired through a semi-auto. I have noticed this in my Colt 5.56 AR and my Ruger Mini-30. The fired case will not easily chamber in either. By AR-15 Grendel and Blackout, do not suffer from this. Take a case fired from your AR and see if it chambers and Extracts with ease. Be careful though, if you let the AR action slam shut you may have one hell of a time getting that case back out. This is about the M14, but the same principles can apply to other semi-autos. http://www.zediker.com/downloads/14_loading.pdf
Give a man a fish and he eats for a day. Give a man a welfare check, a forty ounce malt liquor, a crack pipe, an Obama phone, free health insurance. and some Air Jordan's and he votes Democrat for a lifetime.
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Joined: Apr 2011
Posts: 152,601 Likes: 52
Campfire Savant
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Campfire Savant
Joined: Apr 2011
Posts: 152,601 Likes: 52 |
I like CFE 223. It meters well!
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Joined: Nov 2011
Posts: 31,222 Likes: 10
Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
Posts: 31,222 Likes: 10 |
I can't make any sense out of the reloading data for H322 and 52-53 grain bullets in 223. Hodgdon gives a max charge of 23 something, Speer a max charge of 24 something, and I think Sierra maxes at 25 something. Sierra's starting charge is darn near Hodgdon's max, unless I am reading the data wrong.
Don't know how one bullet weight and powder can have a two grain spread in the reloading data for max charges. I have a box of Hornady 53 grain match bullets that I would like to try with H322, but I can't figure out where to start. Auk, Bearing surface can make a significant difference, which can be affected by Boat tails and ogive lengths. And, as previously mentioned, need to watch what pressure standard they are using, .223 vs. 5.56. Case volume also matters. When I adjust for case volume, it's not unusual for QL predictions to be withing 20 fps of actual chronograph results, or withing the margin of error for typical standard deviations.
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
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