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Posted: 7/18/2013 7:48:00 PM EDT
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Hey everyone, a friend of mine recommended using some H4895 in my .223 loads so I figured I would build up a load and see how it does. I am loading Hornady 55gr Soft Points with Can. From the data I have found for this powder I was going to do my build up starting at 24.5gr 24.5gr 25.1gr 25.7gr 26.2gr 26.8gr data was compiled from hodgdens website Lynman 48 and 49 Hornady My issue is, I am a bit hesitant on the higher loads, the last one (26.8) literally fills to the brim of the case. I just wanted confirmation from another source (here) that I am not going to blow my AR up. thanks all!
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Quoted: A quick look at Lyman 49 shows a max load of IMR-4895 with a 55 gr bullet is 26.0 grs. They show that as a compressed load. Work up, compressed loads are not dangerous if supported by published data. Thanks Dryflash, Hornady 4th edition shows 26.8 as the max load at 3200fps, I will check for pressure signs before I get there, it just seemed odd to me that I filled the case up so much thanks!
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Hornady #4, that pretty old they are on Edition 8 at the moment.
Hodgdon data list 26.2gr for IMR and 26.0gr for H. If there is load data to support the charge no need to worry about compressing the charge. It will not "blow up" on your bench. As always start low and work up. |
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Quoted:
Hornady #4, that pretty old they are on Edition 8 at the moment. Hodgdon data list 26.2gr for IMR and 26.0gr for H. If there is load data to support the charge no need to worry about compressing the charge. It will not "blow up" on your bench. As always start low and work up. I'm fairly new at reloading so may I please ask why info that was good several years ago may no longer be good now? |
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Quoted: Hornady #4, that pretty old they are on Edition 8 at the moment. Hodgdon data list 26.2gr for IMR and 26.0gr for H. If there is load data to support the charge no need to worry about compressing the charge. It will not "blow up" on your bench. As always start low and work up. I also have a speer from 1981/1982 I believe :) I inherited a few old books with my rock chucker from my dad. I bought the lyman 49th when I started to make sure I had updated data.. Maybe I will not use the 26.8gr charge.. unless the lower one is all good thanks!
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Quoted:
I'm fairly new at reloading so may I please ask why info that was good several years ago may no longer be good now? Quoted:
Quoted:
Hornady #4, that pretty old they are on Edition 8 at the moment. Hodgdon data list 26.2gr for IMR and 26.0gr for H. If there is load data to support the charge no need to worry about compressing the charge. It will not "blow up" on your bench. As always start low and work up. I'm fairly new at reloading so may I please ask why info that was good several years ago may no longer be good now? Things change. The product may go through a refinement and that could effect the burn rate of the powder. What I really like is when you have two different manuals, both current, and they don't agree with each other. 
Always "work up" your load. |
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I'm fairly new at reloading so may I please ask why info that was good several years ago may no longer be good now? Old data may still be valid, but there is a chance it is not. A couple reasons why data may have changed. 1) The powder itself has changed. For example, after Hodgdon took over the distribution rights to IMR powder some of the "H" and "IMR" powders have merged and are now one were years ago they were indeed two separate powders. 4227 is one such powder. Another example is Ramshot X-Terminator and AA 2230, in 2005 these two separate powders became one and older 2230 data does not apply. 2) New and improved testing equipment. The CUP testing has been replaced with Piezo Transducer testing equipment which measures in PSI instead of CUP and is significant'y more accurate. I'm sure there are other reasons, but you get the idea. |
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Compressed loads are common when combining a gunpowder on the slow end of the burn speed range for bullet that tends to the light end.
It's just about impossible to avoid spilling a little powder if the cases are filled to the top of the neck, so it's better to use a little less, maybe to the bottom of the neck. The compression may be sufficient to push bullets out of the case slightly, just enough to exceed magazine length. I've never seen one that pushed the bullet completely out of the case. I noticed your charge increments are 0.6 grains. That's a little large for .223 Rem and I would use 0.4 or 0.5 grains, especially when approaching the maximum charge weight. 0.6 grains in a .223 Rem case will easily take a warm load to one that is way too hot. |
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Quoted:
Looks like I am getting a new book :) Quoted:
Quoted:
If you charge your case with a drop tube it may leave more room in the neck and cause less compressing. BTW: the Hornady 9th edition has been out for months. Looks like I am getting a new book :) There is a list of corrections that was released for the Hornady 9th 
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There are too many good loads out there to EVER have to compress for .223.
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Whats a drop tube? I loaded up another set of rounds to go in-between the ones I listed, also went down to 23.5 hopefully will make it to the range today or tomorrow to test them ETA: Just checked out some youtube videos on drop tubes, looks like I need to buy one  |
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Quoted:
Whats a drop tube? I loaded up another set of rounds to go in-between the ones I listed, also went down to 23.5 hopefully will make it to the range today or tomorrow to test them ETA: Just checked out some youtube videos on drop tubes, looks like I need to buy one Good thing to purchase, then you can enjoy the benefits of compressed and heavily compressed loads. Welcome to the world of accuracy and velocity. |
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