I was wondering what brand and OZ shells will cycle my dads new saiga 12 gage. We plan to take it to the throw your own skeet range where any size shot short of buck shot is acceptable. I am hoping 7 1/2 oz shells will be strong enough as they are the cheepest ones we can find, I think they are remington. I am not sure how picky these guns are so any advice would be great help. Thanks alot