richalexander97
Member
- Joined
- Dec 17, 2020
- Messages
- 30
Hi I'm new to the forum. I had an idea for a new small arms concept which A) has a drastic weight reduction over 556 packages, and B) the ammo can be shared with a handgun.
To get 556 range from a handgun round, the bullet diameter is 4.9mm (shoots extremely flat) and the bullpup rifle has a 20 inch barrel. Additionally the energies are over 1000ft/lbs because the case is very fat, basically a 10mm /. 45, necked down to. 19 caliber.
The pistol has a carefully designed grip to allow the huge round.
To achieve the weight reduction, the ammo uses aluminum cases, or possibly polymer steel hybrids. Rifle is only 2. 9kg and the light ammo allows light magazines.
Anyway the only snag points I could see was whether my extreme case shape was viable, especially trying to make it feed well. Imagine a 45acp case with very tiny 4. 9mm bullets. Any thoughts on that?
The other thing I considered was sabots, with a smaller 17 caliber bullet at extreme energies. The sabots main purpose would be to reduce barrel wear.
The problem is that sabots are hard to make accurate. The bullets would be far heavier than the 10 grain darts used in the SPEW/ACR experiments. I think that was the cause of their innacuracy.
Anyway if you can see any flaws or problems, please point them out.
Rich
To get 556 range from a handgun round, the bullet diameter is 4.9mm (shoots extremely flat) and the bullpup rifle has a 20 inch barrel. Additionally the energies are over 1000ft/lbs because the case is very fat, basically a 10mm /. 45, necked down to. 19 caliber.
The pistol has a carefully designed grip to allow the huge round.
To achieve the weight reduction, the ammo uses aluminum cases, or possibly polymer steel hybrids. Rifle is only 2. 9kg and the light ammo allows light magazines.
Anyway the only snag points I could see was whether my extreme case shape was viable, especially trying to make it feed well. Imagine a 45acp case with very tiny 4. 9mm bullets. Any thoughts on that?
The other thing I considered was sabots, with a smaller 17 caliber bullet at extreme energies. The sabots main purpose would be to reduce barrel wear.
The problem is that sabots are hard to make accurate. The bullets would be far heavier than the 10 grain darts used in the SPEW/ACR experiments. I think that was the cause of their innacuracy.
Anyway if you can see any flaws or problems, please point them out.
Rich