Recent content by Michigander

This is a follow up to a prior post describing the "inverted" rifling pattern that Diana uses on the 54, and maybe on all their rifles. The responses were basically: "interesting, but how does it shoot?". We have had some calm weather in Michigan lately, so after thoroughly cleaning the barrel...

Not sure what your actual goal is, but trying to get any kind of accuracy out of a spring powered pistol is a real challenge. At least I'm not up to it. Single strokers or multi-pumps are in a different league entirely, due to the essentially recoilless behavior. That said, there are a couple...

This is a great thread! Thanks to all who have contributed, a lot of great information being shared. Here is what I can add. Pivot lock screw torque: I had to send my Sport in for trigger work. After getting it back, all seemed fine for a while, then I noticed the pivot had worked loose. I went...

Is that "collet" really solid, or is it a cup intended to center the spring on the piston ID? That's what I was considering if I ever get inside my Sport. If not a cup, how would the collet differ from a simple spring spacer?

I agree it is all about accuracy in the end. My gun shoots acceptably, but not exceptionally well. But the question is what drives the decision to one configuration or the other? Does each proponent imagine their configuration to be the one that is more accurate, or is there something else...

I happened to look at the muzzle of my .22 caliber Diana 54 one day and noticed that the rifling was different from what I expected. Instead of being a series of narrow ribs that would engage the pellet and impart rotation, the rifling consisted of a set of narrow grooves, leaving the pellet...

I have become interested recently in stock design and how it is adapted to different shooting disciplines. This was sparked in part by the rather unusual design of the stock of the Diana AirKing Pro. Just what was the intended usage? Here are some stats from a range of rifles of different...

I am using 20 lb-in. Much less than that and torque would not remain stable.

Looks good! Not everything has to look like walnut. How do you plan to position those side holes? Only thing I can think of would be to make some soft jaws for the barrel so you can secure it in a mill or drill press vice. Then position the vice so that the mounting bracket holes are centered...

I really like that sight! What a great solution for fitting to break barrels with various front sight heights and barrel angles. And I really like the R8 it is mounted on. Sold mine like a dummy!

I was a member of WWCC awhile back, but quit when the airgun group disbanded. I had my own property to shoot on by then anyway. Good to hear the airgun group started up again. And if they now have a dedicated airgun range that would be great. The Sharonville range is a very nice public range...

Just to make sure I wasn't misleading people, I went back and redid measurements using proper tools for the job. On dovetails, the female rail fit is actually controlled by the theoretical distance between opposite vee apexes. That is what would be called out on a drawing. This distance can be...

The only rail that seems to be absolutely standardized is Anschutz. I have rifles from the early 70s to 2022 and they all measure 10.93 - 11.00mm in width. Makes it so much easier to fit a sight. The Sport rail is more narrow than the FWB 300s, but just slightly wider than the Anschutz. An FWB...

For safe operation, the pull adjustment has to be set high enough to allow the sear to fully reset on a cocked gun if the trigger is pulled through its first stage and released without firing the gun. It should return to its fully forward position. If it doesn't, the adjustment screw has been...

I think that model still uses the ball detent. If the detent doesn't pull the barel back into position after a little rebound from closing too hard, the pivot may be adjusted a bit too tight. I adjust it so that wiith the gun cocked and the stock vertical, the barrel will just barely hold...