RE: 130 grain vs. 150 grain (.270)
at what range did the 130gr carry more energy? It may at the muzzle but probably not at 300yds.
Besides energy, 150gr will be thrown around less by the wind on longer shots. Once you learn your round drop is easy to accomodate...wind is a mother, regardless. That and some guns will simply throw a 150 better than 130.
Im not saying to go with the 150, but thats why someone would consider a heavier bullet with less speed.