I was using OEM seal and it blows after every 50 or 60 shots. OEM is 70 durometer polyurethane.
Now I put 90 durometer polyurethane OEM size seal. So far so good.
Why fx uses 70 durometer?
Is it OK if I use 90 durometer polyurethane O ring breech seal?
Now I put 90 durometer polyurethane OEM size seal. So far so good.
Why fx uses 70 durometer?
Is it OK if I use 90 durometer polyurethane O ring breech seal?