I dont reload and I noted the Berger Elite Hunters state on their website that they may need to be single feed. I'd rather not have single feed. I see the COAL on their website. I contacted my rifle manufacturer and they refused to tell me if the overall cartridge will fit. They stated would void the warranty to give out that information. Ummm.. Okayyyyy. Again I am not reloading just looking to use an off-the-shelf option. How can I tell if it fits before buying? Thanks!