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Duplex
Oct 19, 2010 10:37:20 GMT -5
Post by splinter on Oct 19, 2010 10:37:20 GMT -5
Well with all the Talk about Duplexing loads, I was thinking about doing this I have some 5744 and some V-110 that I was going to duplex, Also Have some H=4198 that i might see also with some v-110 and see what happens, In the past i had a hard time getting the 5744 to iginight so maybe if i throw alittle v-110 under it.. But that was in cold condidtions, so I may wait. But while messing around at the Range the outher day shooting R7 67g with BCR sabot with a 300g rem, out of my Savage 50cal It shoots lights out. Man there are endless loads out there with these guns, Same load with a Barnes O's the same results.....
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Duplex
Oct 19, 2010 11:06:37 GMT -5
Post by grouse on Oct 19, 2010 11:06:37 GMT -5
Something isnt right. 5744 is the easiest to ignite of them all. Is your breech plug clear? Have you ever drilled the carbon out?
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Duplex
Oct 19, 2010 11:46:54 GMT -5
Post by splinter on Oct 19, 2010 11:46:54 GMT -5
Well Grouse It could of been that, at the time it was about 12 out, And i couldnt get it to go Boom,
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Duplex
Oct 19, 2010 12:11:44 GMT -5
Post by lwh723 on Oct 19, 2010 12:11:44 GMT -5
Well Grouse It could of been that, at the time it was about 12 out, And i couldnt get it to go Boom, Yeah, if you can't get 5744 to go, it ain't the powder!
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Duplex
Oct 19, 2010 12:25:20 GMT -5
Post by edge on Oct 19, 2010 12:25:20 GMT -5
5744 and N110 are near the same speed and are not really a duplex. Generally you have two powders that are fairly far apart in burn rate. You are normally trying to use a slower powder so you can burn more of it to gain velocity. If it is not consistent then you add a small amount of the faster powder to bring you pressure up enough to get a consistent burn.
It is NOT to get velocities faster than you would expect from the single powder. If you do then your pressures may be above what you are expecting!!
edge.
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Duplex
Oct 19, 2010 14:15:25 GMT -5
Post by splinter on Oct 19, 2010 14:15:25 GMT -5
Well I just went to the range and the 5744 went boom, with No problems, So at the time it probably was something else?
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Duplex
Oct 19, 2010 14:18:27 GMT -5
Post by dougedwards on Oct 19, 2010 14:18:27 GMT -5
Oooops......sorry wrong thread.
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Duplex
Oct 19, 2010 14:54:27 GMT -5
Post by tar12 on Oct 19, 2010 14:54:27 GMT -5
I have shot over 8lbs of 5744. Thats a lot of shots. I have freeze tested this powder and it has went boom everytime.I feel there is not a more reliable or consistant powder out there.If you are having ignition problems I assure you it is not the 5744 unless it has been subjected to moisture.
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Duplex
Oct 19, 2010 18:11:33 GMT -5
Post by splinter on Oct 19, 2010 18:11:33 GMT -5
I figured it was probably more to do with the Vent. But I have since become more educated since then...Thanks to Mike, Like i said it went boom today No Problem.....I guess I was totaling wrong about the concept of Duplexing I was under the impression that you used it to help Iginight a powder, But have read about it more and edge explenation.
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Duplex
Oct 19, 2010 21:33:30 GMT -5
Post by rbinar on Oct 19, 2010 21:33:30 GMT -5
Well with all the Talk about Duplexing loads, I was thinking about doing this I have some 5744 and some V-110 that I was going to duplex, Also Have some H=4198 that i might see also with some v-110 and see what happens, In the past i had a hard time getting the 5744 to iginight so maybe if i throw alittle v-110 under it.. But that was in cold condidtions, so I may wait. But while messing around at the Range the outher day shooting R7 67g with BCR sabot with a 300g rem, out of my Savage 50cal It shoots lights out. Man there are endless loads out there with these guns, Same load with a Barnes O's the same results..... Well I'm glad you cleared up what was wrong. I'm sure you'll have good results with 5744 as a single. I don't want to jump on you as I'm sure all your comments are well meant. But... I have to add a few things. First if you want to go to a duplex you can find lots of useful information but the idea you presented was just the opposite of what you'd want to think about for a duplex. Sometimes you add A and B and get C so the logic would lead you to subtract A from from C and get B. As much as this makes sense in math it does not in loading. So saying "N110 is a booster duplex", if 5744 does not go off adding a bit of N110 would make that better is not logical in a loading circumstance. That (to put it in math logic again) is because N110 and 5744 are NOT... A and B, they are A and A1 so to speak. They are much too close to each other already to consider in a duplex. For the time being asking someone with much experience and sticking with already used and proven loads will do. In the future when you understand what duplex is trying to accomplish and how to use it in a given caliber (you CANNOT cross calibers) then you'll be ready to make you own adjustments of even develop your own load.
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Duplex
Oct 20, 2010 0:12:20 GMT -5
Post by splinter on Oct 20, 2010 0:12:20 GMT -5
Very wise stuff thanks for not comming out and just a calling me a Complete Dumb Arse? I will sitck with the loads that i have shot well with.
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