I'm not taking umbrage at any of the comments on this thread however, I felt it might be worth pointing out Speer's own comments regarding their 250 grain bullets in Speer's #14 loading manual pg.639 35 Whelen load data;
Speer states "that it sells four Hot-Cor 35 caliber rifle bullets: flat point designs in 180 and 220 grains, a 250 grain spitzer and a 250 grain Grand Slam. Both 250 grain bullets were designed for the Whelen. The two flat point bullets are fine for for game up to medium deer, and the 250 grain bullets should handle any other North American game.The Grand Slam should be chosen for large bear where deep penetration and bullet integrity are vital."
It may also be worth pointing out that their test rifle is a 700 classic with a 22' barrel and their average velocity with 250's came in around 2,350fps while not exceeding the industry max. average pressure of 52,000cup. The same test equipment that has been used over the last 3 load manual editions published by Speer. One might take away or be able to make an inference about the differences between both of their 250 grain bullets construction given Speers comments,design parameters, and testing equipment.
YMMV,
BD
