Adjusting the new .25 R3M HST Screw….a bit different

:hoot:

When my .25 Standard arrived, I downloaded Ed’s Youtube on how to adjust the HST. In it he references a small set screw in the block that the HST screw fits into. He makes a point to be certain to unscrew this tiny set screw before adjusting the HST, and to tighten it carefully when finished.

Mine has the tiny threaded hole the set screw fits into, but there was no set screw in there. Instead, there was a black knurled lock nut that screwed over the HST adjustment screw, and was tightened against the block that holds the hammer spring. Works just fine, but with my 72 year old eyes, I kept looking for that tiny set screw and couldn’t find it. I tried every metric hex wrench and finally a flat bladed screwdriver, until I realized what I was seeing down that tiny black hole were the threads of the HST adjustment screw.

There you have it. The adjustment screw is simple, but you have to know how to release it before you can adjust it. Just because mine has a lock nut instead of a set screw, don’t take my word that all R3M’s are now made this way. That has never been mentioned by Ed that I’m aware of. I may have an older version of the HST lock, or perhaps a newer type of locking the HST in place…that I don’t know, nor do I care. Both methods work just fine.

Also, I believe Ed mentioned to uncock the hammer prior to adjusting the HST. I didn’t do that at first and that cocked hammer spring doesn’t adjust easily with all that tension on it. Once I remembered his advice, I uncocked the gun and adjustment was simple.

I ended up with 31.1gr Barracuda’s coming out at 880 fps before the speed started to drop. So I backed the HST up a tiny bit and restored the 880 fps for an fpe of 54. I can live with that.

I’ve got John Hagan’s adapter on the gun, and Donny has sent his LDC by mail, so sometime this week I can try it for sound and get a shot string or two to review. Right now, that gun is very loud pushing those 31.1gr Barracuda’s at 880 fps. What made it worse is there is a lake in back of my hose and that seems to amplify the sound several times with echos. So I’ve got to lay low till that LDC arrives. I hope it works!!!! Donny put together an 8″ model and I believe I may need every inch of it, perhaps more. Strangely, it seemed the gun was quieter with the OEM shroud end on it. Probably just my imagination. Although I did put four 3mm holes on each side of the front shroud, a hole between each baffle washer, in the Colibri manner. I didn’t think it made much difference. I have have been wrong.

Hoot: