Modern Sporting Rifle Evolution
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BandGEasy

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Reply with quote  #1 
I have the idea to build a short barreled 277 pistol. I want it to be able to shoot subs and supers. My plan for now:

1:7 twist barrel, between 8" and 12", leaning towards 8"
Adjustable gas block
Gas tube dependent on barrel length

I'm probing for feedback ideas for this build. I don't have a specific "job" for this gun right now but definitely a range toy.
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chackworth3

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Reply with quote  #2 
Are you saying you are going to build either an 8” or 12”? If you are I would go 12 because you can really start taking advantage of the super capabilities with 85-110gr and still run subs out of it. IMO 12.5” is the best overall length available for most ar15 rifles as far as performance/handiness goes, especially in the 277 and 6.8. If you are looking for an in between then you can’t go wrong with 10.5” either. It can run the supers plenty hot to take out pigs and perform out to at least 150-200 yards effectively with proper loads. Side note, pig hunting is how I measure the effectiveness of barrel length/ammo selection and 10.5” has been a good performer for me too haha. I have an 8.5” that is great for subs but it is only slightly better than a blackout as far as super performance goes. The wolverine really starts separating itself from the blackout once you get up into the 10” plus barrel lengths. Long story short of it were me I’d go 10.5 or 12. Hope this helps
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Nomadic

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Reply with quote  #3 
I have a 12.5” that I really enjoy. I use it suppressed for hog hunting. I am running 100 Accubond at 2575 fps, and every pig I have shot has been DRT. I use the SBA-3 brace and it works very effectively. I am a big guy, and I find this size rifle to be very comfortable. Not too big, even with a suppressor, and not too small.
I played around with subs, and they are fun to shoot, but I decided I did not like the idea of hunting with them.

If your goal is, or may be hunting, I would say the 12.5 is a great option. If all you care about is fun and size, then maybe the 8” or 10”

Of course, you could just build one of each 😉
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BandGEasy

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Reply with quote  #4 
Thanks for the input, as I continued to look I started to find more info on 10" & 12" barrels. They are both of interest.
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His$Her277

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Reply with quote  #5 
I have a 10.5 1:7 that murders deer but will also cycle subs as light as 150 grain with absolutely 0 issues thus far and great accuracy, granted I don’t shoot much past 100.

The wife has an 8.5 1:11 for deer hunting. She wanted the shorty for the added length of the can. Hers is sub MOA at 100 with 100-110 grainers

I enjoy both and each has its own purpose, IMO to reach out a little farther I’d stick with 10.5+ if you’re planning on 1:7 Hope this helps!!

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BandGEasy

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Reply with quote  #6 
Thanks for the info, I'm settling in on the 10.5 I think. Everyone I appreciate your opinions. It helps to have people that have these guns in use.
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