forestswin
Member
Did another round of 10 rounds - 10 different loads only this time with CCI standard small pistol primers.
I shot 5 rounds at a time into a target. Group size in chart and targets are just for the "best" 5. I did not post targets for 2nd five nor the group size - but they were not much different than what I'm showing here. Primers were down before all shots up to 13.6.
for those interested I did a previous test using CCI 550 magnum primers
link here:
http://smith-wessonforum.com/reloading/329743-chrono-data-target-groups.html
As I'm new to using a chronograph, any opinions, observations, interpretations, suggestions, criticisms are all welcome.
I will note that when shooting these loads - not through a chronograph - the groups are a little tighter - pretty much all are less than 1 1/2" and several are < 1"
So the chrono is somewhat still a distraction.
I'd like to narrow down the load range - but I notice the standard deviations and extreme spread are steadily decreasing as the load increases but the group size is increasing. With the knowledge that the higher charge loads will group better with the chrono put away - not sure which load to pick?
I can only conclude so far that any load - 11.4gr to 14.2gr is fine
I will take this one additional step - up to 15.0 grains in the near future
I shot 5 rounds at a time into a target. Group size in chart and targets are just for the "best" 5. I did not post targets for 2nd five nor the group size - but they were not much different than what I'm showing here. Primers were down before all shots up to 13.6.
for those interested I did a previous test using CCI 550 magnum primers
link here:
http://smith-wessonforum.com/reloading/329743-chrono-data-target-groups.html
As I'm new to using a chronograph, any opinions, observations, interpretations, suggestions, criticisms are all welcome.
I will note that when shooting these loads - not through a chronograph - the groups are a little tighter - pretty much all are less than 1 1/2" and several are < 1"
So the chrono is somewhat still a distraction.
I'd like to narrow down the load range - but I notice the standard deviations and extreme spread are steadily decreasing as the load increases but the group size is increasing. With the knowledge that the higher charge loads will group better with the chrono put away - not sure which load to pick?
I can only conclude so far that any load - 11.4gr to 14.2gr is fine
I will take this one additional step - up to 15.0 grains in the near future
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- there is no wind - the range is surrounded by dense trees on 3 sides and a building to the rear - I read that as all me
