I tend to migrate to, obscure calibers.
My favorite bear rifle is an 1896 vintage Sauer double rifle. Caliber is 11.2x60R. 11mm Mauser. Umm, let's see, 9.3x57 is on bench right now, a 16ga / 9.3x80 combo hammer gun, 33WCF Winchester 1886, another obscure is on its way. 7x61 left-handed Texas Magnum.