When the idea arrived off, the bullet a bit opened up and commenced tumbling, which triggered the core to individual from your jacket. Penetration was deep on account of insufficient expansion, however the wound cavity was narrow.
Each individual load was fired into blocks of 10-% ordnance gelatin positioned fifteen feet in the muzzle. Impact velocity was received that has a Shooting Chrony positioned in front of the gel block. Temperature: sixty eight to 87 levels Fahrenheit. Penetration implies The purpose from the gel block the place the largest bit of the bullet came to rest in inches.
Ordinarily, I would concur. Nevertheless, I am driving specifically for SBR functionality, and 1680 could possibly give that in which other powders would not. I was just thinking if any individual experienced chrono'd any 223 loads with it from an SBR.
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357 Max comes along with 1680 in a wide range of bullet weights. The Legend data within Accurate 1680 the Hodgdon website lists only the 180gr bullet. The max demand stated is 27gr at about 31kpsi. The commencing cost is lots fewer, and I ponder if it could even cycle an AR. So, you are all by yourself. Like Captain Kirk.
Following have you been likely to tell us you might be looking to get accuracy with a progressive push that chunks out 2599 rounds a hour?
Which is rather crappy for just a 24 inch barrel, but because it's a really speedy powder, I would guess that It could be less affected by a brief barrel than slower powders like 748, 2230, Varget, or BL-C2. Identical Tale for Accurate 5744. Extremely fast powder that generates some good velocities in 223. I was wondering if any person has completed this experiment and it has outcomes? If not, and when somebody has an SBR they'd like to check, I've acquired a pound of 1680 on my reloading bench today....
Now accurate 1680 powder will come the availability of LeverEvolution powder from Hodgdon, and .30-30 velocities unapproachable in the past are within effortless attain of those of us who just take excellent Pleasure in stuffing primers, powders and bullets into second-hand scenarios.
The only issue I ran into even though handloading the .three hundred Blackout was with bullet established-out if the cartridge was chambered. With some loads—particularly Those people using the one hundred twenty five-grain Nosler AccuBond and a hundred and fifty-grain Nosler Ballistic Suggestion—the bullet would migrate ahead in the case once the cartridge entered the chamber.
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If I needed to attempt it, I'd begin with a starting off Accurate 1680 load with the a hundred and eighty, see how it really works and then probably do the job up in very little increments. When I'd reach suitable accuracy, that could be my load.