tucker301 Posted September 27, 2009 Share Posted September 27, 2009 Looking back on Steve's original post and recalling how my R1 was fouling in a similar fashion, I think the problem is coming from the way the R1 piston assembly traps hot gasses and attempts to hold them under pressure in the assembly. The Browning releases the gasses quickly and allows for much more rapid cooling. As you can see, all of the heat and pressure are applied to the top of the piston in the Browning, just like an internal combustion engine. There is no sealed chamber between two cylinders to concentrate and retain the hot gasses. It's a bit ironic that Benelli, a company which has built a stellar reputation for offering an alternative to the dirty gas piston systems in shotguns, has built their rifle on that exact design. Quote Link to comment Share on other sites More sharing options...
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