I bought a R9 that was customized by Cogan which included his Double ported barrel. I took it along with another R9 that I have shot a lot and chronographed three factory loads in both guns,
Here are the results:
Federal Hydra Shoks, 124 grain - Std R9 - 964 fps, SD - 14 fps
- Ported R9 – 964 fps, SD - 5 fps
Gold Dot 124 grain - Std R9 - 1021 fps, SD – 21 fps
-Ported R9 - 1009 fps, SD – 14 fps
Gold Dot 115 grain -Std R9 - 1062 fps, SD – 12 fps
-Ported R9 - 1062, SD – 18 fps
My everyday carry is a Kimber Solo which I carry the Remington GS 124 gr +P Bonded. They choronograph at 1050 fps out of the 2 3/4" barrel.