Hi all....
Yeah, yeah, long time no see...
Pardon me if this thread seems like spam. I am in no way associated with these people.
I was wondering why my .223 reloads/handloads weren't grouping any better.
Some thoughts entered my mind wondering if it wasn't a concentricity or bullet runout issue.
So at first I made my own concentricity gauge out a small block of steel and 4 things of slingshot ammo. The I used a magnetic base and a dial indicator.
You can watch my initial trials here:
https://youtu.be/Pm64y4T0BWEI was kinda shocked by the results, so I splurged, and bought a very high end concentricity gauge:
https://youtu.be/oD5PWbfuFpYThat is like 7 to 8 thousandths of runout (0.007 to 0.008).
So to have something to compare against, I used a round of factory ammunition. All I had around was some Black Hills ammo:
https://youtu.be/IBD9J943mfIWhich shows about a thou to 1.5 thousandths in runout.
Soooo....when I get some free time, I will have to dig deeper into my press to figure out why the actual bullets are getting seated crooked. It is a Dillon 650 auto indexing progressive press. I had noticed previously that the shellplate wasn't stopping in the right position.
And no, I am not here to foster this idea that a single stage press is inherently better at reloading rifle ammo.
If you are wondering why your handloads aren't more accurate than factory ammo, you could always try building your own concentricity gauge.