So if you're looking for a punchline, the design files are available for free download HERE. They'll probably be updated over time as things are added and tweaked, so it is my request you don't re-host them, they'll always be available free there so just come back to the source code.
So first off credit to rj2239 for the inspiration for this project and developing all the little ideas and fixes necessary to make this work. And a quick side note the FX Crown and FX Impact magazines are NOT mirror images of each other, the Crown uses a bunch of minor tolerance changes in regards to chamber location.
The problem I've been having with my factory Crown magazines is that they keep throwing fliers. I predominantly shoot at "long range" (100 yards or greater) with JSB 18.13s, and a handful of rounds going wild out of every mag was just not making me happy. Interestingly I started tracking which rounds out of the mag went wild, and they tended to come from specific positions in the magazine. I cooked up a single shot tray which fixed the problem, but I also wanted a mag I could shoot from so that, particularly in the cold, I didn't have to fumble with pellet tins.
So my hypothesis for this is that the Crown magazines have a minor asymmetry to them due to the clearance between the body axle and the follower enforced by spring pressure. Notice how in some positions the pellets won't drop to the bottom readily, probably in part because of this, and of course also because JSB's have larger diameter skirts than heads. So what if I just designed a magazine which, unlike FX's or rj2239's which was done essentially in 2.5D, I designed it in fully 3D so that there was clearance for those skirts?This way the pellets would be moved from position to position inside the magazine by their heads rather than their delicate skirts. Worth a shot right?
Well this, is that. Its freezing cold winter here, there is snow on the ground (shoot prone) and the absense of leaves really allows a nice breeze to kick up while simultaneously making said wind difficult to read. So really that long list of excuses is my way of saying I've printed and tried a couple of these and they appear to work in comparison to the stock FX magazines. That said I would really I'd like to go out on a nice warm summer day in the grass and spend about an hour and a half shooting groups from the FX mags, these mags, and out of a single shot tray, generate a big mountain of data, and then compile it all for statistical analysis so I can quantify are these magazines better, if so by how much, and how do they compare to a single shot tray? If wishes were horses though, we'd all be eating steak, and given how long it took me to design, test, and generate assembly instructions on these mags though I'm not expecting to get all that done tomorrow.
So here is the design, free for people to use and provide feedback on. Remember it is worth what you paid for it though, 0$, so please try to keep your expectations modest. This is neither a fully CNC machined magazine (although those with the tools could easily do so) nor is it a radical departure from the (in my eyes) flawed sprung-magazine-design so common these days.
So first off credit to rj2239 for the inspiration for this project and developing all the little ideas and fixes necessary to make this work. And a quick side note the FX Crown and FX Impact magazines are NOT mirror images of each other, the Crown uses a bunch of minor tolerance changes in regards to chamber location.
The problem I've been having with my factory Crown magazines is that they keep throwing fliers. I predominantly shoot at "long range" (100 yards or greater) with JSB 18.13s, and a handful of rounds going wild out of every mag was just not making me happy. Interestingly I started tracking which rounds out of the mag went wild, and they tended to come from specific positions in the magazine. I cooked up a single shot tray which fixed the problem, but I also wanted a mag I could shoot from so that, particularly in the cold, I didn't have to fumble with pellet tins.
So my hypothesis for this is that the Crown magazines have a minor asymmetry to them due to the clearance between the body axle and the follower enforced by spring pressure. Notice how in some positions the pellets won't drop to the bottom readily, probably in part because of this, and of course also because JSB's have larger diameter skirts than heads. So what if I just designed a magazine which, unlike FX's or rj2239's which was done essentially in 2.5D, I designed it in fully 3D so that there was clearance for those skirts?This way the pellets would be moved from position to position inside the magazine by their heads rather than their delicate skirts. Worth a shot right?
Well this, is that. Its freezing cold winter here, there is snow on the ground (shoot prone) and the absense of leaves really allows a nice breeze to kick up while simultaneously making said wind difficult to read. So really that long list of excuses is my way of saying I've printed and tried a couple of these and they appear to work in comparison to the stock FX magazines. That said I would really I'd like to go out on a nice warm summer day in the grass and spend about an hour and a half shooting groups from the FX mags, these mags, and out of a single shot tray, generate a big mountain of data, and then compile it all for statistical analysis so I can quantify are these magazines better, if so by how much, and how do they compare to a single shot tray? If wishes were horses though, we'd all be eating steak, and given how long it took me to design, test, and generate assembly instructions on these mags though I'm not expecting to get all that done tomorrow.
So here is the design, free for people to use and provide feedback on. Remember it is worth what you paid for it though, 0$, so please try to keep your expectations modest. This is neither a fully CNC machined magazine (although those with the tools could easily do so) nor is it a radical departure from the (in my eyes) flawed sprung-magazine-design so common these days.
