Your twist rate is key with all bullets and needs to be paid close attn to with the mono's. For a lead free copper bullet to get to 175g it will be longer than a 175g lead core bullet and need more twist to be properly stabilized. This is much more important when it comes to on game performance. 7mm is one of the calibers that have a wide range of factory twist rates. They range from 9" to 10" and there is a huge difference in how they will perform. If you have a 9" twist i suspect that you will still be marginal in stability with the 175g Barnes. I'm not sure of the length of them but would be worth checking this out before you head out hunting with them. Added elevation will help with ballistic stability but does not add the rpm's needed for good terminal performance after impact. It doesn't seem to matter to most bullet manufactures whether or not they are marketing a marginally stable bullet for common factory twist rate rifles. It is buyer beware. After all the testing that we have done in media and on animals, I have come to the conclusion that many of the stories that we hear about bullet failures may not be due to poor bullet quality but due to marginal stability. The smaller the hp the more that marginal stability can cause poor terminal performance. Same for tipped bullets.
When it comes to mono's the copper alloy makes a huge diff in terminal performance. We thought that we would get some good pure copper and make bullets. If we did not care it would have ended there and we would have marketed there. We wasted thousands of pounds of copper looking for a copper that would do what we wanted on game. When we found the copper that we currently use is made a dramatic diff on game. Our copper is super soft and reacts the same at high or low vel impacts. We were worried about copper fouling when we custom ordered a couple thousand pounds of this copper. Turned out to be an unwarranted fear. Our PDR design leaves almost zero copper fouling. Less than any other bullet that I have used.
Blackaj, I hope all goes well for you. If we can help at all feel free to contact me.