Quoted:
Apologies if this has been asked and answered already but I wondered if anyone has experience with this combo out to 200 yds. Only thing I could find were discussions of terminal effects etc. with different barrel lengths, bullet weights and distances but nothing recent specifically dealing only with accuracy (preferably from a rest).
Many thanks in advance.
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You may want to look in the SBR forum.
Click on ARMORY tab above, then scroll down to Short Barrel Rifle forum.
Short barrels are not less accurate, and are usually stiffer, which increases accuracy. HOWEVER, you lose velocity, so the drop and wind are much more of a factor. IMO 7.5" barrel in 5.56 is a 100 yard or less effective range because of velocity.
If you want 200 yards, maybe consider a 10.5".
But, if it's a range toy, then have at it. I can hit steel at 200 yards with a 7.5" upper and open sights no problem (just did it last weekend again) from a bench.