Checking that load in another Vanguard "MAY" give you a good estimate, but the only way you can know the velocity in your gun is to chrono. your rifle. For example, me & my brother each have Sendero's in 25-06AI. With the same 115gr. load the vel. spread is 80+ fps!
Besides, a chrono. is a very good educator & a great tool if you choose to load your own, helps you with pressure indicators at times & humbles at times.
Concerning trajectory info, get the bullet makers BC value (though not allways correct), & after checking vel. you can check it with diff. sight-ins here:
www.biggameinfo.com
