1st year 740 here.
150g Hornady RN(round nose) designed for 30-30's velocity. Loaded over H4895 to about 2600fps. Doesn't beat on the gun,functions like greased ball bearings. Crushes deer on well placed shots. Think of it as a +P 30-30.
If a 740-2-00 won't handle that load,get rid of it. Mine is, minute of Coke can @100 with a Weaver 3X. Good luck with your project.