Originally Posted by
Chameleox
I think you're missing the point. Its not a question of whether or not a bad guy will shrug off a stabilized from a 1/9 barrel, versus a 1/7 barrel. Over simplified.
Grant and GotM4 are trying to explain 3 basic points:
1. 1/7 twist barrels will tend to stabilize a wider range of training, varminting, and defensive ammo than 1/9's will. This translates into ammo versatility for training or varied uses.
2. Factory guns shipping with 1/7 barrels tend to have better barrel quality (and overall quality) than those that ship with 1/9's. Think Colt, LMT, BCM, etc., compared to Bushmaster, Olympic, RRA, DPMS, etc. Also look at the intended customers of those companies.
3. More and more duty/military/defensive ammo is being developed with longer, ergo heavier, bullet designs. Not being a ballistics nerd or an employee of an ammo manufacturer, all I can see is that the rounds that are being used in defense of life, property, society and country, tend to be of the 62 grain and up variety.