8" barrel- about a 75 fps gain before the cases started backing out and locking up the cylinder.
Sean
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DW .375 Super Mag to .375 GNR
- Pacecars, 2025-07-08, 16:10
- Yes it can be done , I had Gary do 1 for me 15 years ago, - Sean Harper, 2025-07-09, 11:09
- A revolver would gain less, S.S. barrel more. - WB, 2025-07-08, 17:23