The AK-47 was designed shortly after WWII, later becoming the AKM because the production of sheet metal had issues when first initiated.
The cartridge is widely used due to the worldwide proliferation of Russian SKS and AK-47 pattern rifles, as well as RPD and RPK light machine guns. 30 Russian Short) round is a rimless bottlenecked intermediate cartridge of Soviet origin. Test barrel length: 520 mm (20 in) (in Sellier & Bellot tests) If we desire respect for the law, we must first make the law respectable.Former Soviet Union, former Warsaw Pact, Iran, Russia, China, India, Egypt, Cambodia, North Korea, Vietnam, Cuba, Finland, Venezuela, many othersħ.85–7.9 mm (0.309–0.311") SAAMI 7.92 mm (0.312") CIP "There are four boxes to be used in defense of liberty: I tested the 180 grain loads yesterday with an unmodified 16" upper.
On 12:57 PM, Brett Van via Groups.Io wrote: You are walking in uncharted territory, particularly with its fav 143 gr Bullseye for subsonic in a 6.5 creedmore? Maybe. 4" on down the barrel you don't care, it will You MUST keep the pressure up as the bullet is beingĮngraved in the rifling. You should then start with about 95% of that charge in an evenįaster powder. With much faster powder, and STOP with that powder when you see theįirst flat primer, and check to make sure you don't already have a stuckīullet. Any load getting down into the subsonic should be done Highly dangerous excessive pressures as the fire builds up behind it, isĪs high as it is in any big magnum being loaded light with heavy bulletsĪnd slow powder. Microseconds only half engaged with the rifling, which can lead to The possibility of getting a bullet stuck for a few wrote:The 6.5 Creedmoor is one of those cartridges I would be carefull of when knapper On Friday,įebruary 28, 2020, 06:14:02 PM MST, Larry Bump Larry I am very interested in the development of the sub-sonic AR 15Īnd if it will preform as a true SUB-SONIC then i intend onĮxperimenting with my 6.5 Creed moor. On Sunday 01 March 2020 12:56:01 Dallas Richardson via Groups.Io wrote:
The 180 grain round nose bullets seem to work better though, so that would be my suggested starting place. They are both accurate, with the Matchkings being exceptionally so. Both of these loads hit 12 to 14 inches lower than standard Wolf ammo at 100 yards.
I use a Lee factory crimp on these, and crimp them med+. I had to open the adjustable gas block to 13 of 20 clicks. 11.5 gains of Accurate 5744 with a 174g Sierra MatchKing is also subsonic but requires more gas to cycle the AR. 11.5 gains of Accurate 5744 with a 180g bullet (I used Speer round nose soft points). This rifle has an adjustable gas block, but the 180 grain subsonic rounds cycle with it halfway open 10 out of 20 clicks. I was using a sturdy 9mm suppressor for testing. Those two shots did cycle though, ejecting and chambering the next round. I didn't mess with it without the suppressor beyond the first two test shots. This works reliably with a suppressor, but it did *want* to cycle without one. What I found was Accurate 5744 will push out a 180 grain bullet at subsonic speeds and still cycle an AR-15 with a 16" barrel. So I bought a new set of dies (I sold the last set after giving up) and tried a few different powders. Recently I had the urge again, It was either get this working or buy a 300 AAC. I had been messing with the "Subsonic 7.62x39 in an AR platform" subject for a while and gave up after finding minimal success.
0 kommentar(er)
