5.56 chamber shows more velocity than wylde chamber
I have been testing a mk262 clone for weeks and here are some interesting results from the two guns I used to test velocity.
16" barrel, 5.56 NATO chamber, 5R rifling, melonite treated.
16" barrel, .223 wylde chamber, 3R rifling, melonite treated.
The velocity on the 5.56 was about 100fps faster than the .223 wylde;consistently higher.
Average velocity of the 5.56 chamber was 2665fps with a high of 2680 and a low of 2650.
The .223 wylde experienced much lower velocities.
Average was 2550fps with a high of 2570 and a low of 2530.
All of the ammo was loaded the same.