I have some ross pistons that can supposedly handle a 250 shot of nitrous, can anyone help me select the rings I should get. Also I plan on putting 150-200 shot on these, if anyone needs to know this. Thanks for the help.

 

Setting the correct piston to bore clearance and file fitting the rings with the required clearance for this application is most important. I had good luck with seal power standard tension plasma moly coated rings.