andrewctillman":ww9rxhfe said:
RL17 should give more barrel life compared to H1000. Reference chart
RL17 is comparable to 4350
Faster powders give more barrel life, slower powders dwell time at the throat is longer, although measured in microseconds
The reason larger calibers have much longer barrel life is they generally use faster powders. Real barrel burners like the 264 win mag have a reputation for short barrel life and shoot best with the real slow powders like H380
