While cleaning my rifle bore tonight, a weird question popped into my feeble brain. Which brand of bullet causes the worst amount of copper fouling?


I surmise that the composition of the jacket material has some bearing on that question. Is a softer jacket worse than a harder jacket, or vice versa? Is the alloy content the main factor? Anyone know of any data available on this brain fart?


On a similar tact, here are the chronograph results for two very similar loads.


204 Ruger, Hornady Case, Federal Match Primer, 27.0 grains IMR 8208 XBR Powder, both bullets seated .02 inch off the barrel lands:


39 grain Sierra Blitzking Bullet – 3733 fps average for 10 Shots
40 grain Hornady V-Max Bullet – 3773 fps average for 10 shots


Despite being one grain heavier, the Hornady averaged 40 fps higher than the Sierra. I now wonder, which load had the highest chamber pressure?


Oops! I guess I'll stop wondering and just go to the range tomorrow and have LOADS of fun!