sumpnz:
Grendel Testing I assumed the use of TF, being a link in my profile would be sufficient, guess not. In summary of the remainder of the "lingo" the 6.5 Grendel terminal performance testing did not go so well.
A long neck in a fragmenting military style bullet increases the odds that the bullet will fully penetrate before it begins to do significant damage, resulting in damage that is similar to that of a .22LR. Very clean in and out small diameter hole.
The "neck" here is more than 10cm and less than 15cm.
The "neck" here is at least 15cm, and less than 20cm.
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Glad to hear that the XM8 isn't getting too much heavier, I would like confirmation however, that it will not be a 5.56mm rifle.
PAC762:
The XM8 should be cheaper than the M16/M4, lighter in weight, and more reliable.
If it uses the 6.8SPC cartridge, the weapon will not suffer from the poor terminal performance of the 5.56mm cartridge in the short barreled M4 since the 6.8SPC was designed around shorter barrels, and performs very well in them.
While the lighter weight, and greater reliability would be a plus, they would not IMHO justify the: hassle, expense, etc. without the upgrade in cartridge as well.
-Morgan