I am helping a friends wife purchase a scope for her husband. He has a large frame JP in 6.5 creed like the one in the attached picture. He wants (she is getting) a Nightforce 5-25 to put on it (i know there are many other scope options but this is what he wants). My question is can you can mount with standard rings or do you have to use a one piece with the rings angled forward. Thank you for your help.