With the wide meplat bullets I used in the 38-55 and 45-70, I never thought expansion was needed and my experiences backed that up. With 30 caliber and such, even with a wide meplat (which the RCBS 180 FN has) would be helped along by some expansion. I've been thinking that straight wheel weight would do it, but that a soft nose/hard shank bullet might be better. There will be some experimentation before next season, but I appreciate hearing y'all's experiences.
