No, the plastic tip of AccuBonds (or any other plastic-tipped bullet) doesn't not get driven down into the center of the lead. Slow-motion video of plastic-tipped bullets expanding in clear ballistic gelation shows the plastic tips drifting ahead of the expanding bullet, and then getting pushed off to the side. They expand just like non-tipped bullets.
AccuBonds are constructed to lose about the same amount of weight than Partitions, so don't shred any more meat. There's no reason they should. And like Partitions, the AccuBonds over .30 caliber are designed to retain more weight.
Over the years the Partitions under .30 that I've recovered have averaged 62.4% weight retention, and the under-.30 AccuBonds 67.2%. The over-.30 Partitions have averaged 86.3%, and over-.30 AccuBonds 78.6%.
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