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I disagree with you on the 1/7 vs 1/9 non-chrome lined vs chrome lined. The Sig Sauer 550 and 551 both came in 1/10 twist, non chrome lined after YEARS of research into close quarters operations. Sig relied on data gathered from thousands of combat situations and tested the rifles against live animals and ballistics gel. They also tested the weapon system using that ammo READ HERE. Second time in 3 days i posted that link...LOL. They used a 63gr FMJ (Gw Pat.90) and found that this gave the best soft tissue / light armor / close range / medium range / penetration / fragmentation / wound cavity outcomes. It gave the best possible outcome in all situations, EVEN if a specific outcome was less then that provided by another combo. They chose NOT to chrome line the barrel since this decreases accuracy for the benefit of catering to idiots who can't clean a barrel when instructed too....or as a way to enhance barrel life at the cost of accuracy and environmental conditions.
If you are a professional "Operator" you want and do certain things.
1) You want the best overall chance to kill your opponent. You can tailor your weapon to a specific mission. If not, you want the best weapon for all possible engagements. That means professionally maintaining, cleaning and housing your weapon. You will not need specialized coatings and barrel linings "grunts" need since grunts treat their weapons like crap or they can not afford the time it takes to properly maintain a weapon system before or in between a mission. SWAT Officers store their weapons in an Armory and they are properly maintained before missions. They don't need chrome lining and are better served with accuracy. The best barrel for that is a cut barrel (not CHF) without chrome lining. They also don't need a specialized twist designed for different ammos.
2) You choose your ammo and twist the same way. Choosing a long heavy round and a tight twist means you are not expecting close quarters engagements. The long heavy ammo will punch through soft body armor and out the back with little to no fragmentation...not good. That ammo is best used for mid to longer ranged engagements where the shorter lighter ammo can't maintain accuracy or acceptable wound channeling due to the tighter twist needed for the heavy ammo...see the problem there. You create a circular problematic issue. Now going with a longer twist 1/9 or 1/10 and a mid grade ammo..like 62gr, or Gw Pat.90, MK318. You gain destructive ability at close range without sacrificing anything at mid ranges.
3) Operators are rarely lone wolves. They operate in teams. The far-mid and long range threats will be dealt with by the members in the team best equipped to deal with them...and thats not going to be a 5.56 MK262 projectile, which can be used for that...but lets not get off track here. MK262 is a compromise for not having a 7.62 firearm. I use it myself since I carry one Rifle and many different types of ammo. I swap ammo when needed tailoring my ammo to the situation I am in. I am NOT an operator. No operator is going to be carrying 3 different ammo selections and swapping ammo when he is faced with a threat where his currently loaded ammo isn't best. Thats silly.
American and European logistical tactics differ quite a bit. Both produce quality results. I would not dismiss RRAs Op2 simply because it doesn't fit into what a few certain American instructors have been telling us. The European teams have been dealing with this just like we have and have good data on what works and what doesn't.
All that being said... I'd choose DD over RRA simply because of what Riflegear told us. DD supports California and RRA is silent on the issues that effect our rights.
If you are a professional "Operator" you want and do certain things.
1) You want the best overall chance to kill your opponent. You can tailor your weapon to a specific mission. If not, you want the best weapon for all possible engagements. That means professionally maintaining, cleaning and housing your weapon. You will not need specialized coatings and barrel linings "grunts" need since grunts treat their weapons like crap or they can not afford the time it takes to properly maintain a weapon system before or in between a mission. SWAT Officers store their weapons in an Armory and they are properly maintained before missions. They don't need chrome lining and are better served with accuracy. The best barrel for that is a cut barrel (not CHF) without chrome lining. They also don't need a specialized twist designed for different ammos.
2) You choose your ammo and twist the same way. Choosing a long heavy round and a tight twist means you are not expecting close quarters engagements. The long heavy ammo will punch through soft body armor and out the back with little to no fragmentation...not good. That ammo is best used for mid to longer ranged engagements where the shorter lighter ammo can't maintain accuracy or acceptable wound channeling due to the tighter twist needed for the heavy ammo...see the problem there. You create a circular problematic issue. Now going with a longer twist 1/9 or 1/10 and a mid grade ammo..like 62gr, or Gw Pat.90, MK318. You gain destructive ability at close range without sacrificing anything at mid ranges.
3) Operators are rarely lone wolves. They operate in teams. The far-mid and long range threats will be dealt with by the members in the team best equipped to deal with them...and thats not going to be a 5.56 MK262 projectile, which can be used for that...but lets not get off track here. MK262 is a compromise for not having a 7.62 firearm. I use it myself since I carry one Rifle and many different types of ammo. I swap ammo when needed tailoring my ammo to the situation I am in. I am NOT an operator. No operator is going to be carrying 3 different ammo selections and swapping ammo when he is faced with a threat where his currently loaded ammo isn't best. Thats silly.
American and European logistical tactics differ quite a bit. Both produce quality results. I would not dismiss RRAs Op2 simply because it doesn't fit into what a few certain American instructors have been telling us. The European teams have been dealing with this just like we have and have good data on what works and what doesn't.
All that being said... I'd choose DD over RRA simply because of what Riflegear told us. DD supports California and RRA is silent on the issues that effect our rights.
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