With all the 210-grain Berger VLD Goal handload, four of the 10 rounds have been above the speed of sound even following lowering the powder demand. Even though the velocity variation did very little for precision, this load was continue to far more accurate than just about every manufacturing facility subsonic giving other than one.
I utilized load data from Hodgdon and Accurate, but my to start with try yielded supersonic velocities. (At my site the speed of seem was about 1,143 fps over the examination day.) Following reducing the powder demand, eight of the subsequent ten rounds were subsonic.
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Shorten cartridge length for the people Journals, as well as the mouth of the situation hangs above the ogive curve with the bullet. Few rifles will feed the ammunition.
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I used to be striving some new loads just past 7 days. I haven't got my notes useful, but I remember fantastic results as far as accuracy with 1680.
The pace of seem just isn't a constant. You may explore published data will produce supersonic loads, and also you might have to lower powder fees to ensure Just about every bullet continues to be subsonic.
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Considering the fact that I was deep into this accurate 1680 powder handloading undertaking and had a great deal of brass still left around from tests the factory ammo, I figured I might too assemble some subsonic loads. I chose two Berger VLD bullets, the first of which was the corporation's one hundred ninety-grain Hunting version.
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This load was extremely accurate, besting quite possibly the most accurate manufacturing unit load I fired within the Accurate 1680 AAC MPW carbine by more than .50 inch. It could do the job perfectly for defense and tactical applications; the bullet's bonded construction would help it keep jointly when encountering a barrier. Mainly because velocity is important to functionality, this load should be an awesome match for an SBR.
On the other hand, if you accurate 1680 powder are looking for a higher-overall performance, supersonic cartridge that can run within an AR, there are actually improved solutions in a number of calibers. In the event you want functionality at both of those finishes on the velocity spectrum, then the .300 AAC Blackout is a good choice, and you can also make it better still by utilizing a variety of bullets and recipes as a result of handloading.