Some questions with my build......Please help

[leo6223]

I'm new to the .300 whipser but not new to AR's.

I'm building my own and have several questions....

1) Major difference between 300 whisper and 300 fireball and 300/221 (are the last two the same thing?) OK, I'M 'UP TO SPEED' ON THIS.....HAVE 300 FIREBALL DIES ON THE WAY

2) what is the best gas tube length? and why? I'VE DECIDED TO GO WITH CARBINE LENGTH AFTER TALKING TO THE TECH SECTION AT M1S....HE CONVINCED ME IT'S THE WAY TO GO SINCE I WILL BE SHOOTING BOTH SUPER AND SUB SONIC.

3) I plan on getting a M1S upper.....good or bad idea? I REALLY LIKED THE GUY IN THE TECH SECTION.....TOOK THE TIME TO EXPLAIN QUITE A FEW THINGS TO ME....SEEMED VERY NICE AND WILLING TO HELP. THEY'LL GET MORE OF MY BUSINESS.

4) best length? SBR is not a problem....should I go for a shorter barrel then 16".....why? DECIDED TO GO WITH THE 16....LESS HEADACHE WITH THE ATF PLUS SINCE I'LL BE GOING SUPERSONIC IT WILL PROVIDE MORE BURN IN MY 'HUNTING ROUNDS'

5) my intent is to not only use this as a "fun gun" but also as a hunting gun.....so I will be shooting suppressed/unsuppressed....and sonic/sub-sonic.

With all this in mind please help steer me in the right direction....mostly on barrel length and gas tube location.


Thanks!



EDIT: also, I plan on reloading my own and making my brass from 5.56 LC brass. Anyone got a link to a good tutorial on this? Also, do you guys that cut down the .223 rem brass aneal it afterwards? I imagine it gets pretty worked harded.

AFTER TALKING TO THE M1S GUY I FOUND OUT THAT TURNING THE NECK ON THE .223 BRASS WILL BE IMPORTANT SINCE IT WILL BE VERY THICK.


NOW, A NEW QUESTION: I'VE DECIDED TO GO WITH A RIFLE LENGTH STOCK/BUFFER. ANYONE USING THIS? AND HAVE YOU USED STOCK SPRING/BUFFER OR DID YOU LIGHTEN IT UP WITH REDUCED WEIGHT OR SPRING?

THANKS GUYS!