Do you have or have access to a chronograph? If you’re not willing to put a scope on for load development I’d do a 10 shot ladder test looking for velocity nodes and pick a powder charge in the middle of a node. You can’t run gas guns as hot as bolt guns so I absolutely would not push past book...
Hey guys, never posted before but long time lurker. Hopefully this isn’t too much of a necropost. As for form 1 stuff the two best resources are silencer student on YouTube, if you want more info you can join his patreon page for a month or two. He goes through the process of building different...