Just wanted to update this post quick. I have since used dyna bore coat in a 257wby, 300wsm, 6.5x55 and just last weekend a 338-378 wby. The 257 and 338-378 were both shooting barnes at 3500fps+ and after 30 rounds one patch at home made it perfectly clean.
I have also used it in my 1911 and ruger 44mag where I shoot cast boolits. I have noticed a reduction in leading (not that there was much to start with) and super easy to clean. Will coat the m&p9 when it gets here as well.
It's good stuff!
I have also used it in my 1911 and ruger 44mag where I shoot cast boolits. I have noticed a reduction in leading (not that there was much to start with) and super easy to clean. Will coat the m&p9 when it gets here as well.
It's good stuff!