Copper Fouling on Sierra and Hornady Bullets

[Reloader222]

I have found that there was a significant more copper fouling in my .270Win with which I mainly shoot Hornady Interbond Bullets. In my .222Rem with which I mainly use Sierra Game King bullets there is a significant small amount of copper fouling. On a percentage basis I gues it 70% more on the Hornady Interbond Bullets. What is your experience? I base this on the amount of times I had to apply the Copper remover (Hoppe's Copper Terminator).

 

[Clark]

The bad bullets for me are Remington bullets.
I think the jackets are soft pure Copper.

 

[rmorgan9718]

My cooper problems have been with Hornady BT's in my 280. I'm gonna try some CFE223 powder and check for accuracy/velocity/fouling elimination.