Re: 6.5 gibbs
This is not true. No problems with the Gibbs. The brass will last the same as any other cartridge. I own Gibbs in every caliber from 240 to 358 except the 8mm. With the 270 brass you must trim it down to '06 length. You can neck up 25-06 brass. The Gibbs line are exceptional cartridges equaling their magnum counterparts with less powder, noise and recoil. In other words the 264 gibbs will shoot right with the 264 win mag.
Predictions are difficult, especially when they involve the future