Sorry, but I have posted this before also.

130g NAB vs 130g SII water jug test with 6.5x284 at 15 yards.

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Accuracy was very similar in my rifle, <1 MOA out to 300 yards. I think the NAB went through 1 more jug, but that is from memory so may not be correct. Also, I am pretty sure that the SII weighed more when recovered.