Would a disco hammer spring be too much for a 1377?I got my project 1377 today and have it all apart,now just waiting for some parts.Hopefully I can get it back together.LOL
The Disco spring will work fine in your shooter.
http://www.gatewaytoairguns.org/GTA/index.php?topic=12418.0;wap2 (http://www.gatewaytoairguns.org/GTA/index.php?topic=12418.0;wap2)