What spring to use on an Isis recoil system?

Discussion in 'Americantrapshooter.com. - Trapshooting forum.' started by 635 G, Dec 5, 2025.

  1. 635 G

    635 G Mega Poster

    Just got an Isis recoil system installed on my Parcours, been shooting 7/8 oz loads due to shoulder issues. The installer left the medium spring in the unit. Have a soft spring and a hard spring to play with. Which would be the best?
     
    635 G, Dec 5, 2025
    #1
    just joe likes this.
  2. Skeet_Man

    Skeet_Man Mega Poster

    Completely personal preference. Try all 3 and see which ones you like with your gun and loads.
     
    Skeet_Man, Dec 7, 2025
    #2
  3. Ravenanme

    Ravenanme Well-Known Member

    My MX 12 34 " was a dream to shoot with Win Heavys with medium springs !
    It also is a killer with 7/8 oz of #5's on Barn pigeons !
     
    Ravenanme, Dec 7, 2025
    #3