Help with 204 Ruger Velocity

[Mark M.]

Just a quick question for 204 Ruger reloaders,
Can you tell me what my velocity should be using the following: 25.3 gr. Reloader 10X, 205M primer, 39 gr. Sierra blk. 24" barrel, thank you

 

[22vartarg]

According to Sierra load data you should be in the neighborhood of 3650 fps.

 

[RegionRat]

With 25.0, a WOA upper with a 24" bbl gives 3716 FPS, but using CCI Magnum primers at 2.358 OAL

 

[jepp2]

Can you tell me what my velocity should be using the following: 25.3 gr. Reloader 10X, 205M primer, 39 gr. Sierra blk. 24" barrel, thank you

 

[6ShotsOr5?]

Just a quick question for 204 Ruger reloaders,
Can you tell me what my velocity should be using the following: 25.3 gr. Reloader 10X, 205M primer, 39 gr. Sierra blk. 24" barrel, thank you

I just installed the Sierra app a few days ago and you can drill down a little deeper. It’s free to install on an iPhone. I don’t know about availability or cost for other devices.

I was able to verify Sierra are using a 24” bbl with 11 twist. Norma brass, trim 1.84”, and a WSR primer. For the bullet and charge you stated, the app gives 3670 fps.