Looking to build a new rifle, it will be primarily a hunting rifle. I have narrowed it down to these two calibers 7 SAUM or 300SAUM. I have reloading components for both just need a few more pieces of brass for the 7. Leaning toward the 7. Long action, 26 in barrel , 160 -175 gr or the 300 160-180 gr. Is a 24 in barrel enough to let either cartridge live to it's potential.