To do the velocity all you do is get a little screwdriver and turn it to the right, right? Also how do you know when you get it to reach the certain FPS you want?... Why not. There is a difference between tweaks and upgrades.
Little tweaks can turn your 98 from and average to pretty nice gun with little to no money involved.
One thing that is really important is to get the velocity right, I've seen it time and time again people saying there 98 can't hit anything. Then you take them to the chrono and they are at like 300+. I've found that my 98 shoots its best at around 270 fps. Not every 98 is the same so play around with yours and see where it works the best.
Another little tweak is to do the ball point pen spring mod. This is one of the most important and easyest things to do to a 98. You simply replace the stock spring that is on the trigger with a new one (make sure NOT to replace the sear spring. Cheak mannual to make sure you've got the right one.) You can eaither put in a stronger spring (for faster return of the trigger) or a lighter one (for ligher trigger pull) its personal preference, again just play around with it and see what one you like.
Thats all i can think of right now but i know theres more.....
how would you lighten the rear bolt?lightened hammer, play with springs, polish internals, etc,,,, for example, on my gun with an rt, it works best with no return spring on the trigger at all... lightened hammer and polished internals increased ROF and dramatically dropped kick...
He's right.you mean the hammer?
The best way would be to use a metal lathe and shave off the first ~1/8" inch behind the oring