Free: Contests & Raffles.
Buy a 500-600dollar savage (not the axis models), preferably with a threaded barrel and spend the rest of your budget on a scope. Most factory rifles will shoot 400 yards very accurately these days so the glass is where it’s at. Repeatable and reliable glass is the most importantly. Find a demo or used Nightforce SHV (make sure it is a model with ZERO SET) and you will be under budget. 20MOA rail, nice rims and a level. If you have money left put a brake on it. Last thought…..the creed is capable to those ranges. That said, if you want to go further in the future, look at the 6.5 prc….especially if your shooting factory ammo.