Comments by "" (@neutronalchemist3241) on "Garand Thumb" channel.

  1. Ammo have a steel washer at the base, so any round spent in training can be easily removed with a magnet. It's not like brass is carbon neutral.
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  2.  @galloglaigh8198  That's how it works. Brass is a very good thermal conductor. That means that it subtracts heat form the burning gasses, and transfer it to the receiver, so cooling down the gasses, and reducing their pressure, to heat the receiver. Plastic is a poor thermal conductor. So the energy remains in gasses. Infact, in this rifle having the same performances than .277 Fury with much lower pressure, PART is due to the longer barrel, PART to less energy of the gasses being spent in heating the rifle and PART in the plastic case making less resistance to the extraction of the bullet.
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  3.  @jpc347  But it means that you can't use mil-spec .277 Fury in existing .308 weapons, so still two different logistic chains AFTER having swapped barrels. Better to stick with .308 at that point. The TV ammo being compatible with existing .308 platforms would have also made it more readily accepted by Allied armies.
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  4. The main problem will be the proprietary cartridge.
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  5. You swap the ejection side pushing a button.
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  6. Yeah. Ernest Langdon had done that for ages.
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  7.  @bigi5580  Not every army. Argentinian and Rumanian Armies, IE, adopted recently an hammer fired gun (the PX4 for both)
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  8. None of both. The Galil is a AK platform and the Scar is a AR18 platform. This one is different.
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  9. Hei! When the US Camo actually camouflaged!
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  10. It's the contrary. Brass is a very good thermal conductor. It subtracts heat from the gasses, and transfers it to the receiver. Plastic is a poor thermal conductor. It subtracts much less heat to the gasses, and doesn't transfer it to the receiver. Heat (=energy) remains in gasses, so it propels the bullet faster, and exits the barrel with the gasses (that are also poor thermal conductors). The statement "brass removes heat from the weapon" is valid only in respect to caseless ammo. Like the ones H&K was using.
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  11. The SIG Spear has a movable barrel as well.
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  12. Plastic does not transfer heat to the chamber, so it gets hot later than firing brass cartridges. When it's hot enough to melt the cases a conventional design would already be hot enough to cook of the cartridges. Also, when your barrel is becoming too hot, you can choose to fire form an open bolt. So the case is not going to be in the chamber enough to melt.
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  13.  @Not_Sure_2505  In the end yes. But, thanks to the reduced heat transfer of plastic, for that to happen, you should have fired so many rounds that, in a traditional system (so with the increased heat transfer of brass) the chamber would be so hot to cook off the cartridges. In theory, it's possible to make a purely mechanical system so that, when the barrel hits a certain temperature, the rifle automatically switches to open bolt.
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  14. 2-4 MOA is what you can expect from a M4.
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  15. Especially considering the competitor was the VHS, that's practically a gas-action FAMAS.
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  16. It has problem with batteries, sealing, EMP... It only needs to transfer not the movement of the trigger to a sear that's behind the magazine, but to keep the sear above the trigger, and only transfer the movement of the hammer behind the magazine (so, not a long trigger group, but a long hammer group). Ammo don't care if the movement of the hammer that hits them is creepy, or mushy.
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  17.  @No-mq5lw  The paper used was waxed paper, that didn't show problems with water even in WWI trenches. The problem waxed paper had for military use was that , when inserted in a hot chamber, and then left there for a while, the wax could partially melt, and then froze there, making the shell very hard to extract.
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