Miller, thank you for your post and perspective regarding pellet density. The Wakeman article is moot as Federal doesn't use the 15 g/cc any longer but instead uses 18 g/cc effective last year. Browning now offers ammo in 18 g/cc effective this year and Stevens has designed a .410 single-shot, the Stevens 301, using TSS loads. Using KPY Shotgun Ballistic software here is a comparison of chilled lead #4 versus TSS #9 with a muzzle velocity of 1100 fps in each load. The lead load contains 217 #4. Using a gel penetration of 1.5" as a standard, the #4's 1.5" penetration limit is at 59.6 yards. The TSS #9's 1.5" penetration limit is at 58 yards. The 1 5/8 oz load of TSS 9's contains 580 pellets. This load is a common load handloaded for 20 ga. by amateurs for more than a decade in 20 gauge and now by Federal and Browning. Severe bleeding is not the goal in killing a turkey. Shock to the central nervous system (CNS) is the goal by hitting the head and neck, a much narrower target profile than the turkey's body. The difference between chilled lead compared to Nickel plated or 5% antimony alloy is 4 more pellets and 57 yards as the limit for 1.5". The tungsten shot doesn't flatten against a hard surface and bores through. It also tends to shoot tighter than lead regardless of the type of buffer used in the lead loads. Folks can draw their own conclusions as to what this means hunting turkeys. Stevens, Browning and Federal have made their conclusions as well as hundreds of handloaders over the last decade. It's fair to say either load would be devastating inside 50 yards or more if put on target. Gil