What kind of Constancy are you guys seeing?

Jim O

Jim O

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Joined
Aug 21, 2025
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I reload .357 and have been seeing meh results. Using Hp38, winchester small pistol primers and Hornady lead 148 HBWC. I use my brass from factory ammo. Fed. Arms PMC Blazer Hornady. Honestly though, the blazer brass has given me the best results. With about 16 fps standard deviation according to the Garmin.

I'm just using the Hornady pocket scale too. I'm guessing getting a good balance scale would let me get better constancy andower my std dev.

Also, I've noticed that about half the time, the holes on paper have a little Cresent moon of lead to one side or the other. So my bullets must be yawing a bit. My buddy said its due to the gap in the cylender, but I think it's probably the slow twist. Pushing about 800 fps in a 1 in 14 6 inch barrel. I think speeding up the bullet might stabilize it.

Thoughts?
 
I'm not sure I'd want to shoot those bullets much faster than 800 FPS. The lead (it's been some time since I bought any) is fairly soft. I also don't think it;s the cylinder gap, unless the pistol has a misalignment. That said, what i usually do is change bullets when I'm not happy with the results. How do you like the Garmin chronograph? I have an Oehler and i'm thinking of going with the Garmin. I've had that Oehler for over 20 years so it's seen a fair amount of use.
 
Yea, I'm thinking I want to switch to berry's plated double end and try to up the fps so the 1:14 twist can get the spin up. Berries i think can go up to 1200? And don't have to worry about blowing the bell off.

Garmin is great. Was waiting for the Athlon but then its price went up, and the Garmin went on sale so the price was pretty close. Only thing is it gets tripped up if your shooting fast, or next to someone else.
 

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