What I say re: the tips is absolutely, irrefutably true. What you say builds upon that "the tips were ONLY created for enhancing BC." Hmm, so you're saying the tips have an effect on BC? So if we break those tips, is the BC effected? ?? ??? The answer is YES. LOL The tips on the TSSX had a dual mission; better BC and facilitating expansion upon impact-especially in certain V cartridges that would simply poke an archery field point hole through an animal (been there, done that and so have many others who chimed in on earlier posts here re: the TSXs. Fine for certain Vs and definitely DG.) Newer material tips is one in the same...big business have to invent new widgets for the big sale each season!
Tried those rubber tipped bullets in kids' 30-30s long ago...the bent/contorted ones also didn't fly so well and we had some (not full powder charge) ones that literally bounced off deer (doe, in the rain at 50 yds.) LOL Duds. We switched up to full power handloaded RNs after that and to quote Roger Raglin ("Those deer got acquainted with the ground!") lol My son was a dentist in your town. Are you in sales and marketing for those next great bullets??