Gordon's reloading tool

Archeryrob · Feb 10, 2021

Anyone used this? Looks interesting but I wanted to see if anyone has used it. It is free open source.
https://grtools.de/doku.php

I was looking for something to play with to learn more on the computer and see practical applications. I am on a Linux distribution so most others programs have not worked for me and I don't like working with Wine.

I figure I spend the next couple of night or so learning on the YT channel
https://www.youtube.com/channel/UCEdG4IMYRhSA4Tc09hUKN_A

Archeryrob · Feb 10, 2021

Just playing around using 9mm with the 356-124-TC cast bullet and N320 powder.

1015 fps I finally ordered some Clays and can't mess with 45 colt until I cast some bullets not that I finally have primers AND powder.

Melnic · Feb 10, 2021

So, this is a free version of software like Quickload?
thx for posting. I may give a try and just compare some of my reloads

Archeryrob · Feb 10, 2021

All free and even work on Linux, after installing dependencies, if anyone needs it.

I'm still learning and no clear idea WTF i'm looking at exactly yet.

I figure i'll learn something, or at least keep all my fingers making sure things are not hot.

Melnic · Feb 10, 2021

What have you read with what others have been saying about this?
Just to play with it, I put in some numbers for 2 7.62x54r loads
2 metalic loads I put in showed muzzle velocy in GRT close but 100fps faster than what I measured.
I fudges in a PC cast load and it was 75fps higher.

Not bad though for a gross guesstimate

Archeryrob · Feb 10, 2021

I was playing with 30.06 and got a lot out of bounds not calculating. It also did not have IMR 4198 that I saw in it.

I really liked it but haven't spent enough time learning it yet.

Melnic · Feb 10, 2021

Archeryrob said:
I was playing with 30.06 and got a lot out of bounds not calculating. It also did not have IMR 4198 that I saw in it.

I really liked it but haven't spent enough time learning it yet.

did you measure the case water capacity?
I got 69.6gr for my fired case.

ToolAA · Feb 10, 2021

I might check this out and compare it to Quickload.

Archeryrob · Feb 10, 2021

Melnic said:
did you measure the case water capacity?
I got 69.6gr for my fired case.

Haha, NO. Have not have enough just to experiment with it yet.

Melnic · Feb 10, 2021

ToolAA said:
I might check this out and compare it to Quickload.

Is there a way to look at the powder, cartridge and bullet database before buying it Quickload?

GRT I quickly noticed did not seem to have Trailboss
Not sure how to deal with cast bullets either EDIT: I see some Lee molds there

EDIT: put in my reduced load with my Lee bullet on the Mosin Carbine and it came up pretty close (80fps low)

E.Shell · Feb 10, 2021

After seeing two nearly identical* rifles chambered to the same throat/headspace/caliber with the same reamer by the same gunsmith deliver over 100 fps difference in velocity with the same load on the same day, I'd say that getting within 100 fps on a prediction is pretty good.

*The ONLY difference was barrel manufacturer.

Melnic · Feb 10, 2021

E.Shell said:
After seeing two nearly identical* rifles chambered to the same throat/headspace/caliber with the same reamer by the same gunsmith deliver over 100 fps difference in velocity with the same load on the same day, I'd say that getting within 100 fps on a prediction is pretty good.

*The ONLY difference was barrel manufacturer.

Great Wisdom Mr Shell. thanks
Its interesting in the GRT that if you change the groove diameter, the numbers don't change. Bumping around bullet diameter, it does change. Somewhere in there must be a fudge factor for "pitted frosty Mosin Bore"

ToolAA · Feb 10, 2021

Melnic said:
Is there a way to look at the powder, cartridge and bullet database before buying it Quickload?

GRT I quickly noticed did not seem to have Trailboss
Not sure how to deal with cast bullets either EDIT: I see some Lee molds there

EDIT: put in my reduced load with my Lee bullet on the Mosin Carbine and it came up pretty close (80fps low)

I just copied the Power and Cartridge DB as text files and placed them in a shared google drive folder for you to check out HERE. Note the projectiles are in separate files in their own folder. The files have a *.bul file extension but they are just simple text files.

Check them out. Also if you every want me to run a load for you just PM me.

Archeryrob · Feb 11, 2021

It is missing come things that are pretty common for powders. Trailboss and clays from Hodgden. Both I had considered for 45 colt an i will be using clays. Both could be used is shooting lower recoil ammo and obviously something you might wish to experiment with. I guess I am going to ahave to see if they have a forum for this stuff and questions.

I set a load for 45 colt and a Lee 200 grain 452 bullet. I can use Cays so I toss in Unique at 6 grains and 5g. I have a Erro of an Input value" but no signs of what it is. If I change bullet diameters to .5 I get three errors 2 for bullet size and barrel groves not matching, but no clue where the third one is sitting.

I can't see where the error is or how to find it.

Melnic · Feb 11, 2021

I selected the compact mode and not expert mode.
I put in 45 colt, lee 200gr .452 RF bullet and 5 gr unique and get results
it shows 978fps then other notes such as
low burn rate
inconsistent combustion
load rate 25.7%
Burnt propellant 75.8%
A triangle /!\ appears near the step size amount for the ladder. I change it to 0.5 and it goes away
you can set the ladder steps to 1 (disabled) also

I bump it up to 8 grains (a load recently recommended to me) and it comes to
100% burnt
1266fps

Archeryrob · Feb 11, 2021

Expert just shows a cartridge picture and measurements. I got an error I can't figure out on 45 colt and 30.06. No visual keys to why I am getting it.

They got a discord group and to get data on Clays or Trailboss someone needs to chrono them and I do not wish to buy one.

In order to create a new powder file in GRT you will need to run a 2x2x2x5 powder development run. That is 2 calibers, with 2 bullets weights each caliber, with 2 powder charge weights each bullet weight (max and start), five shots. That is 20 shots each caliber. Shoot these loads over a good chronograph like a MagnetoSpeed or LabRadar. The chronographs like a ProChrono are not consistentMake sure you include your Load Data Source.Make sure you include your Load Data Source.Make sure you include your Load Data Source. enough for this use. Then you use GRT to make a .grtload file for each caliber (2 files), so 4 files. Name the files properly so it is easy to tell the caliber, bullet, and powder from the file name. It is most important that you measure the fired case interior volume in grains of water (brimfull level (ever so slightly convex) and enter that into the .grtload file. You also have to measure the length of your lot of bullets, and enter that as well, and the cartridge OAL. If the bullet chosen makes the OAL vary a bit, use the average length.

Melnic · Feb 11, 2021

ToolAA said:
I just copied the Power and Cartridge DB as text files and placed them in a shared google drive folder for you to check out HERE. Note the projectiles are in separate files in their own folder. The files have a *.bul file extension but they are just simple text files.

Check them out. Also if you every want me to run a load for you just PM me.

Does it have the Lee Molds also?
I'm interested in 41 swiss which it has with Trail Boss and the Lee C430-310-RF mold

the price of quickload is not that much and not sure whey I have not purchased it already.

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