Reply To: BIG NEW VALVE FOR M-ROD!
300 fpe? Shooting what kind of projectile? I just ran a calculation. Using a 32.4 gr Eunjin shooting at 1500 fps would only give you 162 fpe. That’s the heaviest pellet I know of. You would need an oval transfer port just so the pellet didn’t fall into it from being so large, and a longer probe. What was it converted to 357 cal for one shot?