137vs168, both have served their purpose so far. There seems to be a bit less loss of meat from shattered bone spray with the 168HHT. I am pretty confident that is a result of the lower velocity(3500fps-MV isn't slow but is lower than the 3830fps of the 137s). Comparing far side lung damage from petals/shank at similar impact velocity seems to be of similar consistency(lungs themselves) albeit the pattern a bit different. Possibly petal shape/size
? The closer one with the 137 definitely had more internal pressure from bubble than anything I've ever or since have seen! There seems to be a bit of middle of velocity bracket line around 3350. Where below it is still impressive but above it - my word - anything boiler room couldn't be anything but bang flop.
My current thoughts, I wish there was another PRD Valley between the first 2. Lol. Seated in the first- mile of jump and lots of shank where powder is supposed to go. Seated in the second- .030ish jump but mag feeding reliability has since shown a need for improvement☹. Depending on reports, might just switch everything 30cal to the 154HHT as each gets to needing reloaded again. It'll be hard to not keep feeding the rum 137s for every day carry, though. Save the HHTs for the windy environments.
Ps. Yeah, started getting gray in my 20's. The top has since gotten sparsely populated and it generally stays shaved.
lol