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How does throat erosion stack up against other hot 22 loads?

April 26, 2017erosion hot loads stack throat

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How does throat erosion stack up against other hot 22 loads?

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A. Lower pressures means extended barrel life. The situation with rounds like the 220 Swift is the high pressures as the bullet starts down the barrel. Some Swift barrels exhibit erosion problems at 2-3000 rounds. 3700 fps in a 1 in 7-twist barrel seems to work well at normal pressures.