Killsoft -about longer bullets, aren't copper bullets like Barnes shorter in the same weight than standard bullets? if so, wouldn't that help negate the action size? I haven't used or reloaded the Barnes yet so I am just wondering if it might make a difference for you ( or me for that matter).
No, solid copper bullets are generally longer than lead core bullets. Copper is less dense than lead per volume, so for a given volume it will weigh less. For a given weight, there will be a larger amount of copper. Lead is about 27 percent more dense than copper.
Put another way, the bore diameter of the two bullets you're comparing is fixed - can't increase. You could imagine that the extra copper to bring the weight back up to match the lead bullet must squish out axially <--> toward the chamber and muzzle. You'd get a longer pure copper bullet that weighs the same as the shorter lead core bullet.
KS
