i have a couple team mates who have these barrels. it increased their effective range. If you guys think about what you're saying it actually makes sense. You're saying that it gives you a tighter grouping, well the 8" has just as tight a grouping, but at shorter distances. The 12" has the same grouping, but with a little more reach than the 8". The 8" and 12" are made the exact same way therefor they produce the exact same results, but at different distances.

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