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KenTsui · July 14th, 2014, 17:21

I use PDI and Prommy in my guns. I've been slowly grading them from the Madbull Pythons. Prommy's are a decent quality stainless steel barrel. From what I've read, the inside surfaces can be improved on, but it is probably the cheapest quality stainless barrel out there.

http://www.madbullairsoft.com/images...l%20Report.pdf

According to this report, Prometheus barrels have the best bore diameter consistency. The report is old now and it's in a different language. From experience, PDI has a pretty good inner finish. I wouldn't hesitate to buy either of the brands.

I'm trending towards PDI since it's recommended by Hunterseeker5 for R-Hop installs.

Edit: If you want perfection, you can buy bore lapping kits to potentially work surfaces to a mirror finish. Of course this drives cost up and it takes a long *** time with a steel barrel. Bang per buck, I still think Madbulls are good, but there's no telling what happens when their coating wears off. That's why I've opted for stainless steel.

July 14th, 2014, 17:21	#8
KenTsui Trader rating Join Date: Dec 2011	I use PDI and Prommy in my guns. I've been slowly grading them from the Madbull Pythons. Prommy's are a decent quality stainless steel barrel. From what I've read, the inside surfaces can be improved on, but it is probably the cheapest quality stainless barrel out there. http://www.madbullairsoft.com/images...l%20Report.pdf According to this report, Prometheus barrels have the best bore diameter consistency. The report is old now and it's in a different language. From experience, PDI has a pretty good inner finish. I wouldn't hesitate to buy either of the brands. I'm trending towards PDI since it's recommended by Hunterseeker5 for R-Hop installs. Edit: If you want perfection, you can buy bore lapping kits to potentially work surfaces to a mirror finish. Of course this drives cost up and it takes a long *** time with a steel barrel. Bang per buck, I still think Madbulls are good, but there's no telling what happens when their coating wears off. That's why I've opted for stainless steel. __________________ What kind of airsofter are YOU? Last edited by KenTsui; July 14th, 2014 at 18:06..