Okay - here goes! Modifications I've done so far to my 580 Target Model are:
- Polished bolt wear points to mirror finish
- Used a jewelers file (lightly) on major slide parts to flatten out the (in places) very rough and uneven surfaces. Ruger does a poor job of cleaning up after the casting process.
- Polished and removed rough areas (lightly) in receiver - all bolt tracking grooves, etc
- Polished underside of barrel - there were scratches in the bottom of my barrel from the slide assembly
- Polished slide assembly wear points - top, sides and bottom - chamfered the hole edges as mine had collected metal due to the rough and sharp edges
- Installed buffer on both ends
After doing all this - I ran two hundred rounds through it to check for malfunctions and because it felt like a completely "new" rifle. Cycled much cleaner and reduced felt recoil. Didn't do any accuracy testing at this point. Really happy with it.
The reduction in operating friction seems to have improved the functioning of the weapon. There is still a couple areas of possible improvements that I'd like to work on. First is the slide assembly - I don't have access to an CNC machine - if we could make up a teflon insert to guide the slide assembly as it rips back and forth, this would reduce/get rid of the slop currently built into its' operation. In lieu of a teflon insert, I am planning on building up a channel on three sides of the stainless steel forearm liner with titanium putty. I would then use a teflon coating to provide as friction free movement as possible. The trick will be to get the slide assembly to accurately engage the gas port pipe. Unsure as to the durability of this but am curious if it will work. If it does it may be worth coming up with a teflon insert. Reducing friction and smoothing out the cycling operation even further, would I also be able to reduce the weight of the slide assembly and use a lighter recoil spring which would again further reduce operating forces?? Of course, gas port size would have to be reduced accordingly. While recoil is not an issue, the increased efficiency and reduced movement of the operating parts should provide a much more accurate and cleaner operating weapon. Please fire at will - just thinking out loud at this point!!
48.6 KB Views: 725
52.5 KB Views: 621