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Curiously, reports on Hevi-Shot from Environ-Metal and Remington, show quite a bit of pellet deformation before a load is shot and this has not seemed to disrupt the patterns profoundly. Hevi-Shot is a blend of tungsten, nickel and iron that is actually heavier than lead – and still eco-friendly. This commentary should not be construed as a commercial for Hevi-Shot, only a report about characteristics that appear to differ from the normative expectation, but hunters and load testers alike attest to the lethality of this brand and composition. On the other hand, Kent/Gamebore notes that their Impact brand eco-friendly tungsten-matrix shot is not formulated to improve on lead. Thus, it is not harder than the steel in the typical shotgun barrel and does not require thick, protective plastic shotcups. Kent says its tungsten loads are just fine for fixed-choke guns as well as for sub gauges and guns with screw-in chokes and that these loads have the same “clean killing ballistic properties of lead.”