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Campfire Outfitter
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will dispense well through a Dillon 550 progressive machine
for loading 75-80 gr. bullets in the AR-15? I tried some Varget today and didn't have much luck as apparently that powder was getting stuck in the throat of the outlet and throwing a double charge.....and consequently powder all over the damn place! Thought maybe a ball powder would work but Win 748 is only listed for the lighter bullets!
Thanks!
Even birds know not to land downwind!
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
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Go slower, like BLC-2, or the new CFE223. If you want to try a very fine single base powder Benchmark would be an option as well.
Last edited by antelope_sniper; 02/03/15.
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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Campfire Outfitter
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OP
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Even birds know not to land downwind!
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Campfire Tracker
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Campfire Tracker
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Joined: Mar 2004
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Campfire Outfitter
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Campfire Outfitter
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748 works fine with heavy bullets.
Islam is a terrorist organization.
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Campfire Regular
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Campfire Regular
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I read somewhere where some powders, especially ball, use nitroglycerine which was not performing as well at distance and causing premature throat erosion.
Can any of you barrel burners comment on this?
John 8:12 "I am the light of the world. Whoever follows me will never walk in darkness, but will have the light of life."
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Campfire Outfitter
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It's the Heat Potential of powder that is the culprit. I guess that is loosely related to nitroglycerin content. Depends on how much NG is in it. But, as a rule, most ball powders and 748 especially, are formulated to be cooler burning and enhance barrel life. You can check out the Heat Potential of your favorite powder. It's incorporated into this barrel life estimator -- http://www.accurateshooter.com/technical-articles/excel-formula-predicts-useful-barrel-life/
Islam is a terrorist organization.
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Campfire Outfitter
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OP
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Anyone using AR Comp with the heavier bullets??
Even birds know not to land downwind!
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I have used 2000-MR, works well with 75's.
Dave
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Campfire Outfitter
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H-322 for 55gr. TAC for heavies. Both work great (+- 0.1gr.) through a Dillon measure.
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Campfire Outfitter
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Thanks guys! I'm looking for some at this time!
Even birds know not to land downwind!
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Campfire Outfitter
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Found out AR Comp is a smaller extruded powder but it would probably bridge across the mouth of a small opening funnel and give erratic charges and spills!
Even birds know not to land downwind!
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Campfire Outfitter
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I have an unopened bottle of AR Comp. I'll have to compare it with 322 this weekend if I get a chance.
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Campfire Outfitter
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I have an unopened bottle of AR Comp. I'll have to compare it with 322 this weekend if I get a chance. Would appreciate your feedback! 
Even birds know not to land downwind!
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Smokeless spherical medium rifle powder
With Power Pro 2000-MR target shooters can enjoy increased speed and round-to-round consistency. Get tight groups, repeatable cloverleafs and uniform loads.
Manufactured in the USA
Improved velocity and density for more efficient metering and loading
Excellent performance in heavy .223 and .308 loads
Enables reloaders to duplicate certain medium rifle heavy bullet factory loads
Density designed for proper cartridge fit
Dave
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Campfire Outfitter
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Benchmark or IMR 8208 measure well in the Dillon measure. Basically the same powder in different containers.
Temp stable and will give good velocity with heavier 22 cal bullets.
Power Pro 2000 MR meters fine but I got about 1 fps per 1 deg of temp. It will produce high port pressure due to the burn curve with max loads.
John Burns
I have all the sources.
They can't stop the signal.
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Campfire Greenhorn
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Campfire Greenhorn
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Accurate 223 or 2200 That is also good H 335 is also good.
Loves gun and reloading casting my own bullets
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