I've read the linked article re: QuickLoad and understand the comments on the weighting factor.
Yesterday, I went to the range and tried a whole slew of different bullets, and powders, simply to check the accuray of the program. I got it just last week.
The temp was between 18F and 24F over the course of the session, and I took that into account when loading the data into the program as an "after-action" report. With Hodgdon Extreme powders, of course, I didn't factor the temp.
I was shooting mostly .270 Win, and with some tweaking of the weighting factor, I can get pretty close to the actual chronoed velocities....but here's my question. I'm having to tweak it, in most cases, a lot.
In fact, one load of RL-22 at 57.5 grains with 150 grain AFrames clocks 10 fps faster than what the program predicts even with the weighting factor set to zero, and the firing temperature correctly inputted. This seems a pretty drastic tweak, considering what I read in the article. Is this unusual?
I've checked H2O capacities and keyed all the dimensions of my cartridges correctly.
This brings up another question...once you've found the weighting factor that works for a particular powder, that only needs to be changed,or, may need to be) when you test a different lot. Is that correct?
And to ask one more question......I'm beginning to think that the weighting factor is specific to a specific lot of powder, not a particular rifle. Is that a correct assumption?
Thanks
Mike
Yesterday, I went to the range and tried a whole slew of different bullets, and powders, simply to check the accuray of the program. I got it just last week.
The temp was between 18F and 24F over the course of the session, and I took that into account when loading the data into the program as an "after-action" report. With Hodgdon Extreme powders, of course, I didn't factor the temp.
I was shooting mostly .270 Win, and with some tweaking of the weighting factor, I can get pretty close to the actual chronoed velocities....but here's my question. I'm having to tweak it, in most cases, a lot.
In fact, one load of RL-22 at 57.5 grains with 150 grain AFrames clocks 10 fps faster than what the program predicts even with the weighting factor set to zero, and the firing temperature correctly inputted. This seems a pretty drastic tweak, considering what I read in the article. Is this unusual?
I've checked H2O capacities and keyed all the dimensions of my cartridges correctly.
This brings up another question...once you've found the weighting factor that works for a particular powder, that only needs to be changed,or, may need to be) when you test a different lot. Is that correct?
And to ask one more question......I'm beginning to think that the weighting factor is specific to a specific lot of powder, not a particular rifle. Is that a correct assumption?
Thanks
Mike