I use both.  Sometimes they agree with each other, sometimes they don’t.  Sometimes they agree with published data, sometimes they don’t.  They are a powerful tool when used properly, but sometimes give you nonsensical load data.  Just apply some common sense 

I use GRT and agree with Dellet, there's still not a lot of data for old cartridges at GRT. But I can find cartridges there with similar case capacity and enter data to make my own results and that works well. I've never bought Quickload, so haven't used it.
GRT takes time to figure out how to enter all the specifics it asks for, but after that it has worked well for me, and the price is right. Free.

THANKS to all for the input..!

I'm going to start another thread (because I believe it is warranted) about a YOU Tube Channel which I believe
many will find informative which relates directly to
the specifics of reloading.

It's called "Little Crow Gunworks."
(You need to Login or Register to view media files and links)

Tim, the channel producer, has a lot of great information on everything reloading from demystifying which groups of powders relate to categories of cartridges, to how the burn rates relate to load density's etc.... Great stuff.

His delivery is a bit on the monotone side but the content, I believe is worth reviewing and book marking for future reference.

BTW, he uses Gordon's Reloading Tool exclusively.

RJ

RJ-35-40 wrote on Sep 9^th, 2025 at 2:05pm: