Hello all, The rifle is an older (probably 80s) Winchester M70 chambered in 7mm rem mag, completely stock. I am in the process of buying my first set reloading equipment to load for this rifle. I have a few questions regarding this. I have a new Vortex Viper PST that I will be mounting on this rifle. First, before loading my own rounds, should I "rough" sight this scope in with factory rounds before loading my own rounds? I am having a few hiccups here as I am unsure how I make sure that when I am testing the loads that it isn't a poor load, when it could be the fault of the scope or rifle. It's difficult to describe what my issue is online. My biggest problem is how do I ensure the rifle isn't causing performance issues (barrel, not floated/bedded, trigger, etc.) over the round being the culprit? And again, how do I ensure I am sighted when I am testing these new handloads? Sorry, very new to this all. Thanks in advance.