Thread: 6.5 grendel

Case dimensions:



We can see that the Grendel and 6PPC have less taper than the parent cartridge 7.62x39. They could be harder to feed, yet the Grendel works reliably in semiautos, apparently. The PPCs were designed for use in single shot bench rest rifles so feed wasn't required.

Due to differences in the case base diameters and the length to shoulder, the 7.62 won't fit into a 6.5 and the 6.5 won't fit into the 6mm. The bullet diameters will also help ! But it looks s if you could mistakenly load and fire a 6.5Grendel cartridge in a 7.62x39 rifle.

Originally Posted by Bagheera

Case dimensions:

Attachment 84882

We can see that the Grendel and 6PPC have less taper than the parent cartridge 7.62x39. They could be harder to feed, yet the Grendel works reliably in semiautos, apparently. The PPCs were designed for use in single shot bench rest rifles so feed wasn't required.

Due to differences in the case base diameters and the length to shoulder, the 7.62 won't fit into a 6.5 and the 6.5 won't fit into the 6mm. The bullet diameters will also help ! But it looks s if you could mistakenly load and fire a 6.5Grendel cartridge in a 7.62x39 rifle.

Nah the 6.5G would not fit in a 7.62 rifle, it will jam without the tapper. Not a single jam so far in the 6.5G AR.
Interesting what you were saying Hueyville, are you sure it wasn't the bullets? 6.8SPC projectiles have a lower BC and I have never managed to get much velocity out of heavy bullets in 5.56/223. We are somewhat limited in New Zealand by projectile and powder availability so 6.8SPC is not much of a go.

You re right 300 cal. The diameter at shoulder 27.3 mm is 0.74mm more in the Grendel than in the 7.62x