Help me decide barrels: SS or milspec?

I have no clue where people stand on SS vs mil spec barrels. I already have a general purpose rifle and a SBR, but I want to build one for a little longer range work (3 gun) as well as one I can lug to a 1000rd class as a back up gun.

It will have a magnified optic on it such as a 1-4 or 1-6x. I’m looking to speed up my 200-500yd practical accuracy (A zone) engagements . I see no need for sub MOA accuracy out of this gun especially if I"m not going to be reloading/buying match ammo.

Will definitely be from reputable companies such as BCM, Noveske or the like.

I’ll probably be using regular 55-62gr ammo. No reloading.

After typing this out I think mil-spec is the way to go but I might as well hit submit now… Did I miss anything?

Read this and you’ll probably answer the question for yourself:

https://www.m4carbine.net/showthread.php?t=141291

Great, now I understood most of that since my profession is a metallurgist…but it makes it harder to make a decision!

From the link I see stainless is actually more heat resistant than I thought, and even though I won’t feed it match ammo, one day I may. That and a 1/8 twist is better than 1/7 when it comes to 55gr bullets. However the milspec barrel is more enticing due to its lower maintenance.

I guess the ultimate question is: can anyone post their real world 300-500yd accuracy with a milspec barrel and 55-62gr ammo? Shouldn’t have a problem hitting 6-8" circle if I do my part right?

EDIT: Looks like cost variable goes out the window as BCM has them all the same price.

I think this makes the decision pretty clear:

It sounds like chrome lined is the way to go from you based upon your described requirements. A good quality chrome lined barrel with decent (not match grade, but not mil surplus) will still prove to be pretty accurate.

In my limited experience a good barrel will keep you from having to buy match grade ammo. My SS BCM shoots Federal 55FMJ as well as Black Hills 75BTHP. So the “don’t get SS unless you’ll always feed it match ammo” argument doesn’t make sense.