Cast loads - Winchester 244 and 572

[Hi-Speed]

Has anyone tested Winchester’s 244 and 572 with 38/357 cast bullets? Any velocities to share? Appreciate any real world experience with these relatively new powders. I did check the on-line factory reloading data but it provides meaningless velocities with a 10 inch test barrel and only one cast bullet type.

[pworley1]

Check the online data again. I just looked and there was a lot of cast data over a range of bullet weights.

[Hi-Speed]

Check the online data again. I just looked and there was a lot of cast data over a range of bullet weights.

…but using a 10 inch test barrel doesn’t tell you much for real world velocities. I’m looking for actual chronographed velocities and general experiences with 572 or 244 before deciding to take the leap to buy the powder.

[techie]

.38 Special, 150 grain Matt's BNWC, CCI 500, OAL 1.393

10 round samples through 6" K-14.

244 grains 3.0
fps 624
sd 40
es 108

244 grains 3.2
fps 685
sd 29
es 86

244 grains 3.4
fps 721
sd 23
es 80

244 grains 3.6
fps 760
sd 17
es 46

244 grains 4.0
fps 843
sd 20
es 55

Watch the OAL, seating deeper will increase pressure and velocity (https://castboolits.gunloads.com/showthread.php?444300-38-WC-OAL-test-with-244) (more 244 results).

[Hi-Speed]

Thank you techie and all