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re: Building a SBR Updated
Posted on 2/19/15 at 1:53 pm to tiddlesmcdiddles
Posted on 2/19/15 at 1:53 pm to tiddlesmcdiddles
quote:
if you are going to SBR it, then there is no real reason to go ANY longer than 8.5".
what is the reason for this? what is magical about 8.5"?
3
Posted on 2/19/15 at 2:03 pm to CptRusty
.300blk does not see any major performance gains with longer barrels. Velocity gains are nearly negligible for how much extra barrel you add. The rifle is meant to have a short barrel for this reason, keeping it shorter than 8.5 will give you awesome performance in a small as possible package.
Posted on 2/19/15 at 2:04 pm to CptRusty
I was always told to go longer if you plan on suppressing it. lets the gas travel a little further so it doesn't put too much pressure on the can.
ETA: 10 inch is ideal
ETA: 10 inch is ideal
This post was edited on 2/19/15 at 2:05 pm
Posted on 2/19/15 at 2:09 pm to CptRusty
quote:
what is the reason for this? what is magical about 8.5"?
in addition to what Chat mentioned, because of the rounds design, it burns all of its powder within 9" so you don't gain any velocity from a longer barrel
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