I just picked up a very clean "wintuff" m94 30-30. I like the look of the laminated stock and it shoots great. It had a scratch on the receiver that i was sure a little cold blue would take care of but it does not touch it. I'm not that familiar with 94 receivers. Are they made of a steel that will not take cold blue or are the "wintuff" models use a different type of steel? Thanks for the info!