The key is practice. In the war soilders who were skilled made shots up to 1400 plus yards with mauser 30-06.

I shoot a 30-06 with 150grain bullets. I practice shoots up to 300 yards. I dont feel comfortable any further than 300 yards but the gun is capable of much further.

"Nothing in all the world is more dangerous than sincere ignorance and conscientious stupidity" Martin Luther King Jr.