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H4831 and H4831SC

Nik

Hi, apart from the physical different, are they ballistically identical? Thank you for your advice.
 
Yes, they are suppose to be close. You still need to work up a new load starting at a charge listed as start point.
 
Yes you can, sort of. Because there are slight differences in batches it is recommended that you work up to your usual load. This goes especially for hot loads or if your load was worked up during winter.
 
i personally found the SC to minutely faster as there was greater surface area on the grains to burn.

so i used a slightly lower charge with the SC, on most lots.

Bob
 
I have only tried this in one rifle, a not so popular in the AS world, 25-06. I averaged around 30 fps muzzle velocity with an identical load of SC versus the regular H4831. I do not find that it meters a bunch better than the regular H4831. Both leave something to be desired in the metering department, compared to some other types of powders. Also, I have not gotten my ES and SD numbers quite as good as I would like to see with either powder. That could be just me, however my numbers with Varget are better, so I'll blame the powder for now. I need to experiment more.
 
timeout-I have just the opposite results with the 25/06. Both SC and LC H4831 work excellent but I only shoot 108 gr to 117 gr bullets. Metering is no problem w/ the Belding & Mull Powder Measures. H4831 is my powder of choice w/ the 6.5/284 clear up to the 308 Baer Magnum (including the 25/06). On a few other cartridges (30/06, 243, etc) H4350 works real well. Just my experience, others may differ.
 
DanConzo said:
timeout-I have just the opposite results with the 25/06. Both SC and LC H4831 work excellent but I only shoot 108 gr to 117 gr bullets. Metering is no problem w/ the Belding & Mull Powder Measures. H4831 is my powder of choice w/ the 6.5/284 clear up to the 308 Baer Magnum (including the 25/06). On a few other cartridges (30/06, 243, etc) H4350 works real well. Just my experience, others may differ.
Click to expand...
I may not have explained this very well. I am using H4831 and H4831SC in my 25-06 exclusively right now. I have a good performing load with 115 gr. VLD's. My point was that I could be a little happier with the SD and ES numbers. Shoots well out to 600, but may shoot even better if I could reduce those numbers a bit. I just can't see a great amount of differnce in metering between the two. I can see a world of difference in metering between those two powders and say N133. I have a Redding measure and trickle up. Also recently purchased a Chargemaster. After reading discussions about them, I am somewhat disappointed in the results that I see. Yes, I have tried the McDonald's straw trick. I re-weigh every charge onto a Gempro 250. I would say that I either trickle up or remove powder on 70% of the loads coming off the Chargemaster. I loaded cartridges for 5 different rifles using 4 different powders in the last week with the Chargemaster and I would never load match ammo without re-weighing.
 
timeout--Don't know anything about the Chargemaster or N133, but perhaps if you move the bullet in or out assuming you do all the accuracy prep work on your cases and segregate your bullets you should find the sweet spot and get the sd down. Myself I would never remove powder instead I would rethrow the charge and trickle up but that's just me. Sounds like you are close though.
 
DanConzo said:
timeout--Don't know anything about the Chargemaster or N133, but perhaps if you move the bullet in or out assuming you do all the accuracy prep work on your cases and segregate your bullets you should find the sweet spot and get the sd down. Myself I would never remove powder instead I would rethrow the charge and trickle up but that's just me. Sounds like you are close though.
Click to expand...

I use a plastic tweezers to gently remove kernels of powder, then lift up the pan and carefully set it back down on the scale to get an accurate reading. Not a bad system and in just a short while you get quite proficient at adding or subtracting just the right amount of powder kernels. Every now and then you wind up chasing the desired weight, but not often.
 
I've never known H4831 to be violent (I suppose you mean high pressure like enlarged primer pockets, popping primers, and/or hard bolt lift, stuck cases, etc but I'm not sure exactly what you mean) even the 99 cents a pound can surplus stuff in the past. I've found it to be very consisent in burning rate lot to lot for many years now. IMR 4831 I know very little about except that the burning rate seemed to be a little faster than H4831 in my experience.
 
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