Thread: Gordons reloading tool

Originally Posted by johnd

He might mean when you make your own table based on readings then submit it to GRT they look at it and alter redefine the parameters ...that seems to happen when they do an update.
I provided them with some more info on the 308 HBC optimus 155 grn and they updated it.
That took less than a week, I dont know if QL would make changes based on Joe Blogs info.

@johnd
Submitting a load is a good idea I did 2 today using ADI 2208. The more us Kiwi's and Ozy's submit the better the calibration.
But no you can tweak the load using the OBT Tab after have input your measured velocity as shown in the video.

Originally Posted by johnd

He might mean when you make your own table based on readings then submit it to GRT they look at it and alter redefine the parameters ...that seems to happen when they do an update.
I provided them with some more info on the 308 HBC optimus 155 grn and they updated it.
That took less than a week, I dont know if QL would make changes based on Joe Blogs info.

QuickLoad don't even respond to emails seeking support as I found out.

Originally Posted by winaa

@Tentman
About a 1/3 of the way through the video above, you put your measured velocity in the measurement's tab and then go to OBT and hit calculate it bring up the tweaked K and Ba to enter in the main window.
You may need to watch the video a couple of time's the SA accent is pretty strong

Thanks for that @winaa
I have been playing with GRT, and some of my loads initially had pressure warnings but velocity was higher than measured. I had run the OBT function and entered measured velocity (which then showed lower pressure), but I didn't know what if any values I could or should change in the original file to make things work.
On a related note, changing from AR2208 to Varget did bring velocity closer to measured.

@winaa I did a download and got the latest version today, then played with my seating depth, I do like how responsive the data is. The warnings are a lot better than past models, where a whole batch of charges would show as "overpressure" now only those that are actually "hot" will show up.
I have found the OBT function pretty good ... but then I have only used it in .308 where I find almost any powder gives good accuracy ( god bless the 308 )

Thanks, I gained a lot for that vid.

But now - Can anyone explain why all of FClass John, Eric Cortina and Bolt Action Reloading have noted small drops in MV as they seat projectiles deeper (i.e. more jump) whereas GRT and Q/L predict the velocity increases when seating depth is reduced?? Thanks

Only the difference in real world testing as opposed to theory perhaps?

Have downloaded the video to watch when I have more time. Thanks