wildcat3d
Silver $$ Contributor
Love my Viper drop port...The original Stolle Panda and the Stiller Viper had the insert screwed in and locked. From what I had always heard, the Panda insert was screwed in tight, then finished with the rest of the action. The Stiller was all finished machined separate and then torqued into place and clocked correctly.
keep in mind, the aluminum part of the action sees zero pressure upon firing. All of the pressure upon ignition is contained within the Alloy Steel Insert.
I have always believed that the most accurate custom action out of the box is a Stolle Panda. They got it right from the beginning.