5 Essential Elements For accurate 1680 load data
5 Essential Elements For accurate 1680 load data
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308 and equivalent cartridges - but it won’t likely be proposed with the powder makers or have force examined data for it. AA1680 is frequently placed in between AA5744 and CFE BLK in burn off charge.
Every load was fired into blocks of 10-percent ordnance gelatin positioned 15 ft in the muzzle. Impression velocity was attained that has a Taking pictures Chrony positioned before the gel block. Temperature: sixty eight to 87 degrees Fahrenheit. Penetration indicates the point inside the gel block exactly where the largest bit of the bullet arrived to relaxation in inches.
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The bullet Just about exploded inside the gel block, shredding the main 8 inches. Its foundation, capped with some guide core, penetrated to roughly fifteen inches but was only with regard to the measurement of the aspirin.
Shorten cartridge duration for anyone magazines, as well as mouth of the situation hangs more than the ogive curve of your bullet. Few rifles will feed the ammunition.
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I used to be striving some new loads just final week. I don't have my notes useful, but I recall superior effects so far as accuracy with 1680.
They Accurate 1680 have got frequently out carried out manufacturing facility loads from my rifles. Hornady 170 gr Interlock smooth point and Shooters Planet Buffalo powder, 27 gr. 1950 fps. Challenging hitting and deer dropping. Ive tried using other loads employing Lil’gun and CFE Blk but They simply didnt provide the teams and functionality for me.
I use this powder mainly because it is really a “ball” powder, not a “adhere”. I use it in my Dillon XL650. When the powder measure is ready, Every single toss is accurate within just 0.one grains. It provides splendidly consistent ammunition.
If you find yourself employing too gradual of a powder, the bullet will start to out-run the gas output. This drops the stress, and further more slows the burning price in the powder. Until the strain wave slams in the bullet, and the pressure spikes.
The recovered diameter (RD) was measured in inches throughout the facial area with the bullet in two places and signifies the average of Individuals two measurements. The recovered pounds (RW) is the burden in grains of the biggest portion of the bullet. Testing was done at an elevation of 2,two hundred toes previously mentioned sea degree.
Get These two teams away from the mix, and Accurate 1680 the average team dimension falls to two.42 inches—more than .70 inch much better than the common for your 6 supersonic factory loads I analyzed while in the MPW carbine. Essentially the most accurate handload defeat out the very best manufacturing unit load by .60 inch when both equally had been fired from the very same gun.
“Valleyfield additional a second coating towards the powder that makes it secure throughout a wide array of temperatures,” Behr explained, and he indicated The 2 powders are kissing cousins, but LT-thirty is a bit more quickly burning than LT-32. These fantastic-grained, extruded powders very easily movement via a powder evaluate to create precise charge weights.
Terminal-efficiency tests yielded Accurate 1680 some exciting outcomes, which happen to be thorough within the accompanying sidebars, and so did the handloading work out. You will get terminal effectiveness beyond the reach of currently presented manufacturing unit ammo from .