GRT - Gordon's Reloading Tool

For those who like to roll their own.

Moderators: carlson1, Charles L. Cotton

Post Reply
User avatar

Topic author
Hack Job
Member
Posts in topic: 1
Posts: 101
Joined: Sun Feb 10, 2013 9:00 pm

GRT - Gordon's Reloading Tool

#1

Post by Hack Job »

I came across a freeware reloading program - Gordon's Reloading Tool. It looks similar to QuickLoad. I thought I'd share the link and check if anyone has used it.

https://grtools.de/
https://www.patreon.com/gordonsreloading
https://www.reddit.com/r/reloading/comm ... rce=shared

Manual
https://www.docdroid.net/EgkOSZV/grt-ma ... -22-en.pdf
Last edited by Hack Job on Sat Dec 07, 2019 4:25 pm, edited 1 time in total.

K-Texas
Banned
Posts in topic: 1
Posts: 341
Joined: Wed Dec 20, 2017 2:34 pm
Location: Heart of Texas

Re: GRT - Gordon's Reloading Tool

#2

Post by K-Texas »

Very interesting and this is the first I've heard of it. I don't have Quik Load on my computer, but I've had others run my data and furnish me a copy. Really excellent tool, but not perfect. Things like time to pressure max, heat of explosion, load density, predicted pressure and velocity are just a few of the data points. If the Gordon's Reloading Tool is as good . . .

Registered. ;-)
Anything that can be corrupted by man; will be corrupted.

The Lord is my shepherd; I shall not want . . .
User avatar

Beiruty
Senior Member
Posts in topic: 6
Posts: 9655
Joined: Tue Aug 12, 2008 9:22 pm
Location: Allen, Texas

Re: GRT - Gordon's Reloading Tool

#3

Post by Beiruty »

It till needs more refinement. If the predicted MV is far away from real MV by more than 5% it is still far off. Right now, it is 10-15% off.
However, once the simulation program is refined, it would surpass QL.
Beiruty,
United we stand, dispersed we falter
2014: NRA Endowment lifetime member
User avatar

Beiruty
Senior Member
Posts in topic: 6
Posts: 9655
Joined: Tue Aug 12, 2008 9:22 pm
Location: Allen, Texas

Re: GRT - Gordon's Reloading Tool

#4

Post by Beiruty »

Motivational Photo
108gr ELD-M in 6mm Creedmoor Case.

https://photos.app.goo.gl/zbqUEWh1V2GRoAgb9
Beiruty,
United we stand, dispersed we falter
2014: NRA Endowment lifetime member

SigSour
Junior Member
Posts in topic: 4
Posts: 21
Joined: Wed Feb 14, 2018 5:55 pm

Re: GRT - Gordon's Reloading Tool

#5

Post by SigSour »

For some reason, internal ballistics programs don't seem to be as popular in the US as Germany. I use QuickLOAD and find it a very useful tool. Gordon's Reloading Tool (GRT) is in the early stages of development but I like the interface better than QL. It has a lot of promise. What they need now is more data (brass, bullet geometries and muzzle velocities. Pressure trace data if you have it) especially on US powders to refine/develop their models.

Go check out their website.
User avatar

Beiruty
Senior Member
Posts in topic: 6
Posts: 9655
Joined: Tue Aug 12, 2008 9:22 pm
Location: Allen, Texas

Re: GRT - Gordon's Reloading Tool

#6

Post by Beiruty »

SigSour wrote: Fri Nov 22, 2019 11:06 am For some reason, internal ballistics programs don't seem to be as popular in the US as Germany. I use QuickLOAD and find it a very useful tool. Gordon's Reloading Tool (GRT) is in the early stages of development but I like the interface better than QL. It has a lot of promise. What they need now is more data (brass, bullet geometries and muzzle velocities. Pressure trace data if you have it) especially on US powders to refine/develop their models.

Go check out their website.
I want the GRT to surpass the QL
I want it to be more accurate in predicting MV and Barrel time.
I want to be Beta Tester
I want to be data provider if I can (MV and load info)
Beiruty,
United we stand, dispersed we falter
2014: NRA Endowment lifetime member

SigSour
Junior Member
Posts in topic: 4
Posts: 21
Joined: Wed Feb 14, 2018 5:55 pm

Re: GRT - Gordon's Reloading Tool

#7

Post by SigSour »

An example screenshot of the main GRT screen.

Screenshot of GRT.jpg
User avatar

Beiruty
Senior Member
Posts in topic: 6
Posts: 9655
Joined: Tue Aug 12, 2008 9:22 pm
Location: Allen, Texas

Re: GRT - Gordon's Reloading Tool

#8

Post by Beiruty »

I just downloaded the latest beta. It is 10X better than the first beta. Graphics as before are very cool. More data are in and more features and it seems accurate. I run my load for 243 but with 4064 instead of the new version IMR 4166 and it very very close to the MV I was seeing. That was with no teaks at all.

This app would have a lot of use by me.
Beiruty,
United we stand, dispersed we falter
2014: NRA Endowment lifetime member

SigSour
Junior Member
Posts in topic: 4
Posts: 21
Joined: Wed Feb 14, 2018 5:55 pm

Re: GRT - Gordon's Reloading Tool

#9

Post by SigSour »

Be sure to check out the OBT tool added in this latest beta. Nice touch.

SigSour
Junior Member
Posts in topic: 4
Posts: 21
Joined: Wed Feb 14, 2018 5:55 pm

Re: GRT - Gordon's Reloading Tool

#10

Post by SigSour »

A Youtube video (in English) describing GRT.

https://www.youtube.com/watch?time_cont ... e=emb_logo
User avatar

Beiruty
Senior Member
Posts in topic: 6
Posts: 9655
Joined: Tue Aug 12, 2008 9:22 pm
Location: Allen, Texas

Re: GRT - Gordon's Reloading Tool

#11

Post by Beiruty »

If you support or have a question. Let met know.
Beiruty,
United we stand, dispersed we falter
2014: NRA Endowment lifetime member

mrvmax
Senior Member
Posts in topic: 2
Posts: 2017
Joined: Tue Oct 25, 2005 7:16 pm
Location: Friendswood

Re: GRT - Gordon's Reloading Tool

#12

Post by mrvmax »

Beiruty wrote: Fri Nov 22, 2019 3:30 pm
SigSour wrote: Fri Nov 22, 2019 11:06 am For some reason, internal ballistics programs don't seem to be as popular in the US as Germany. I use QuickLOAD and find it a very useful tool. Gordon's Reloading Tool (GRT) is in the early stages of development but I like the interface better than QL. It has a lot of promise. What they need now is more data (brass, bullet geometries and muzzle velocities. Pressure trace data if you have it) especially on US powders to refine/develop their models.

Go check out their website.
I want the GRT to surpass the QL
I want it to be more accurate in predicting MV and Barrel time.
I want to be Beta Tester
I want to be data provider if I can (MV and load info)
What’s your reasoning? Do you not like QL or do you just like a free alternative?
Last edited by mrvmax on Fri Jun 05, 2020 8:15 am, edited 1 time in total.
User avatar

Beiruty
Senior Member
Posts in topic: 6
Posts: 9655
Joined: Tue Aug 12, 2008 9:22 pm
Location: Allen, Texas

Re: GRT - Gordon's Reloading Tool

#13

Post by Beiruty »

I just signed for $1/month Patreon membership. As thank you, I got a latest nightly update with not only case diagrams but CIP/SAAMI Chambering diagrams. Plus, your calibrated powder charge/MV values can be shared (uploaded) to GR-LAB in one click.

The App is 10X more actively being developed than QL. In less than a year we got like so many cool features.
It has OBT Calculator auto-load optimizer

Shot Group Image processor
Finding best powder based on your parameters
Burn Speed Chart among all powder in the DB
Black Powder Assistant
Ladder charge Charting
Case and Childbearing dimensions
Of course, Case/Bullet/Powder DB.

What I did not like about QL, is lack of updates
Chamber Diagrams.JPG
Beiruty,
United we stand, dispersed we falter
2014: NRA Endowment lifetime member

mrvmax
Senior Member
Posts in topic: 2
Posts: 2017
Joined: Tue Oct 25, 2005 7:16 pm
Location: Friendswood

Re: GRT - Gordon's Reloading Tool

#14

Post by mrvmax »

Beiruty wrote: Fri Jun 05, 2020 7:35 am I just signed for $1/month Patreon membership. As thank you, I got a latest nightly update with not only case diagrams but CIP/SAAMI Chambering diagrams. Plus, your calibrated powder charge/MV values can be shared (uploaded) to GR-LAB in one click.

The App is 10X more actively being developed than QL. In less than a year we got like so many cool features.
It has OBT Calculator auto-load optimizer

Shot Group Image processor
Finding best powder based on your parameters
Burn Speed Chart among all powder in the DB
Black Powder Assistant
Ladder charge Charting
Case and Childbearing dimensions
Of course, Case/Bullet/Powder DB.

What I did not like about QL, is lack of updates

Chamber Diagrams.JPG
I’m loading a new caliber, 7mm-08 (I just picked up a Savage 510 Striker pistol with 5 barrels/calibers. I currently only load one of those so I’ll get a chance to give GRT some use). I entered data into QL and GRT so I can compare when I chrono it. GRT is a little different in how you enter data but I do like it, I just need to get more familiar with it. I went ahead and supported them on Patreon just to help them get it developed.

MaduroBU
Senior Member
Posts in topic: 1
Posts: 702
Joined: Sat Nov 12, 2016 9:11 am

Re: GRT - Gordon's Reloading Tool

#15

Post by MaduroBU »

Does it have IMR 800-X and/or military pull .510 bullets?
Post Reply

Return to “Reloading Forum”