FYI...that Nosler 120gr 284 BTip uses the same copper jacket as the 140gr'er and trims the thinner upper end of the case off, to satisfy the Silhouette Handgun folks who complained that the original 120's were too soft to knock over the steel targets at longer ranges, who were the predominent consumer at the time...according to what I've heard for a very long time...and the reason for better game penetration than could otherwise be expected in that weight bullet.
"These are the times that try men's soul's"...Thomas Paine
"Those who fail to learn from History are doomed to repeat it" ....Santayana
"There's a sucker born every minute" P.T. Barnum, on why he always had customers to see the sideshow features.