Originally Posted by BrentM
I recently installed a 26" barrel on one of my 204s and have some questions. This barrel does not allow me to shoot as high of pressure ie powder charge as my stock 22" rifle. As a result the velocity is also not as high.
For example I can load 24.7 grains of h4198 in my 22 and get 3780.
With the 26 I max out at 23.5 and 3700.
Accuracy is fine with my hand loads. Shooting around .25 or less moa.
+2 on the headspace thing. Sounds right to me.
Hmmm... less powder, almost as fast. Same 1/4 moa accuracy.
A couple of thoughts if I may. Maybe it's the powder? Maybe 24 grains is not enough powder to use 26 inches of barrel?
Could the old tube be one of those fabled fast barrels?
Hodgdon starting load is 25.5, H335, 3665 fps. If you can't get this much powder in, how deep is your bullet seated? Have you tried a drop tube?
Last thing, tell me about your chronometer.