Originally Posted by
Core781
I understand military cartridges and their practical uses and how they are applied. If you want to drop your muzzle velocity 80fps to have a two inch shorter barrel knock yourself out.Your lack of understanding in practical use is lacking. The shorter the barrel in 5.56N requires more specialized cartridges to get them to shoot accurately at distance and produce good vascular damage. Given the question: I recommend a 14.5”+ barrel for those reasons. And good LPVO glass.
Early in my service the Marines were using RECCE rifles for this reason. They were shooting 62g and 55g. Sure you can stockpile MKxxx ammo or load it yourself. But will it be available in the long term? And even if you have two cartridge types in your kit, you’ll need to know how to use them effectively. You’re going to die if you engage a threat at 600 meters plus with that setup: is that okay with you? Maybe it’s not an issue in your area: no open country?? With a RECCE carbine you will have a fighting chance against an SPR or hunting rifle: and they are handy in most urban spaces. You’ll want a pistol for those small spaces. There is a reason why a division has snipers, LMG, and various specialty loadouts. I used to do VBSS on the high seas, and we used MP5s, we had breachers with shotguns, and overwatch. I was trained in all positions and led a SAT team for several years. The Navy switched to MK18s. I still prefer MP5 for ship spaces but the MK18 is superior at medium ranges.
As a civilian you need to be practical. You can cite all the theoretical data you want but what happens to your one size fits all 12.5” carbine you got 55g/62g and your enemy is at 800 meters? Theories aside.
You are all over the place. I have actually used used both MK262 and regular 62gr ammo out of a 12.5 in Afghanistan out to 400 meters. No issues at all.
What are you trying to say? Are you saying that the 12.5 is too short to do or that with normal ammo?
In no way do I make any money from anyone related to the firearms industry.
"I have never heard anyone say after a firefight that I wish that I had not taken so much ammo.", ME
"Texas can make it without the United States, but the United States can't make it without Texas !", General Sam Houston
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