Regardless of Federal's bare gel numbers, when you combine Doc's account of cumulative OIS and gel test results with the old HST with the fact that most live target recovered bullets resemble 4LD test bullets, I believe the preponderance of the evidence points to the older HST putting its energy to better use (greater expansion with sufficient penetration) in more scenarios of target clothing, not to mention the higher average velocity slightly benefitting hard barrier penetration. I suspect Federal was chasing test results more than street results as test results are harder to debate when they're treated as binary decision points. I'd definitely be buying 147gr +P if new stock.