Originally Posted by
megasupermagnum
That sounds about right Foggy, and I still think ditching the small spring is the best route. The 31# spring alone seems to be working for a number of people, but some not as much, I'm one. I am now trying a 38# spring, which only adds a bit more to the trigger pull, not even half of what the small spring does, yet provides more force to the hammer. Hammer velocity is ultimately what we are after, and as you noted, there are variables. Some guns have more friction between the hammer and frame, some might have a little more mass. One is the hammer extension, and where it is mounted. A heavy steel hammer extension, mounted high can reduce hammer velocity, while a skeletonized hammer will be much faster all else equal. I'm running a Grovtec GTHM-283 (steel), the best hammer extension IMO, and I have it mounted as low as possible to reduce it's effects. Still I found the 31# spring only inadequate in my rifle. It was about 98% reliable for me, so I'm thinking the 38# will be perfect. One thing to note is that these rifles will be 100% reliable no matter what with only the big factory spring, about 50#. With the 31# spring and small factory spring, the hammer pull is only slightly less than with the 50# big spring only, yet I would bet the 50# spring only will provide more hammer velocity. I'm no expert, but the reason being the larger spring has more potential energy stored throughout the swing, while the small spring is only providing a big boost for a shorter part of the hammer swing. A spring's force is directly related to how it is compressed. As you have noted, the small spring is only compressed maybe 1/3rd of what the big spring is.