Cal-gun Fan
Member
I've been looking for definitive information on how 7.62x54r performs from various barrel lengths for a while now. Lots of people put the caliber down for being less efficient at shorter barrel lengths than a .308 is.
http://brassstacker.com/
If you look just above the picture at the center of the website, you will see an option to download Brandon Clark's new report on 54r velocity vs. barrel length. The report is very well done. Its a good read, though the most important part are the ballistics tables. For those of you pressed for time, here they are:
Barrel Length Median Velocity
_________________________________
28.75 inches: 2845.5 ft/s
26.75 inches: 2771.5 ft/s
24.75 inches: 2754 ft/s
22.75 inches: 2710 ft/s
20.75 inches: 2625.5 ft/s
18.75 inches: 2583 ft/s
16.75 inches: 2524.5 ft/s
The report also includes more information such as groupings from each barrel length.
These velocities seem comparable if not better, in some cases, than .308 velocities from corresponding barrel lengths. Perhaps the 54r is a fine choice for a shorter barrel length!
http://brassstacker.com/
If you look just above the picture at the center of the website, you will see an option to download Brandon Clark's new report on 54r velocity vs. barrel length. The report is very well done. Its a good read, though the most important part are the ballistics tables. For those of you pressed for time, here they are:
Barrel Length Median Velocity
_________________________________
28.75 inches: 2845.5 ft/s
26.75 inches: 2771.5 ft/s
24.75 inches: 2754 ft/s
22.75 inches: 2710 ft/s
20.75 inches: 2625.5 ft/s
18.75 inches: 2583 ft/s
16.75 inches: 2524.5 ft/s
The report also includes more information such as groupings from each barrel length.
These velocities seem comparable if not better, in some cases, than .308 velocities from corresponding barrel lengths. Perhaps the 54r is a fine choice for a shorter barrel length!