I only shoot hand loads in all of my rifles . I shot about 20 different loadings [ bullet and powder ] , about 60 - 90 % of full power . I knew a guy that shot 3 full boxes of Norma ammo through his with no problems , but I see no need to do that . With the locking lugs on the rear , you will get some bolt compression / spring back [ just like an Enfield ] that will cause case stretching .