Okay guys, I own an AR in 22LR(Chiappa Upper). I am wanting to set up an Upper that can serve for deer hunting as well as target shooting, but at the same time have something that would be ready for any SHTF scenario. I have been leaning towards the .223/5.56 platform(legal in my state to hunt deer with) with the 7.62x39 a close second.
I have been checking ammo prices and when comparing steel case to steel case in the 2 calibers they are about the same price whereas I can get brass cased .223/5.56 at about 3-5 cents more in the .223/5.56. Brass cased 7.62x39 is expensive and not a real consideration.
Bear in mind I do not reload.
I have heard and seen targets of x39 shot from an AR that had improved grouping over an SKS or AK and being .30 cal theoretically at least should have more knock down power over the .223/5.56. Albeit, shorter range capability.
If I go with a .223/5.56 I would get a 1:7 or 1:8 twist to utilize the heavier grain rounds available for hunting and longer range shooting.
So, that is what I know about it and here are my questions;
1. Are current AR uppers set up to reliably use the steel cased poly coated ammo?
2. If so, does it create the need for more frequent cleaning in the chamber area?
3. Thinking that the .223/5.56 would have at least a slight edge on availability in any given scenario and that the pricing(at least for now) is about the same, does it make sense to get an upper in 7.62x39?