Few questions on QuickLoad

[[email protected]]

1.) For finding case capacity in 300 WM or 300 WSM, the instructions say grains of water in fired- unsized case (just leave it the same on new brass?), still the case?

2.) Should i try and figure out cross sectional bore area?

3.) For imputing case capacity overflow, should I ask my gunsmith for the reamer measurements?

4.) Best techniques to use it to find OBT

Thanks!

 

[[email protected]]

also for OBT do is the measurement with or without muzzle brake?

 

[bigedp51]

I have Quickload and without a chronograph you have nothing more than a computer generated guesstimate. With a chronograph you are to change the burn rate of the powder until your Quickload velocity matches your chronograph. After you get the velocities to match you have no way to ensure the chamber pressure reading in Quickload are accurate.

Now think of all the different makes of firearms and all the variables. Example my factory Savage .223 has a longer throat than my AR 15 rifles do. Now show me how change Quickload throat lengths.

Bottom line, Quickload is good for ball park guesses but for accurate data you need a chronograph and a strain gauge pressure unit to get your chamber pressure. And if you had these two items Quick load would be worthless.

Now get your case capacities, case length, OAL and enter loading data from reloading manuals and see how far off Quickload can be. I don't mean to be a wet blanket but if the loading data in all the loading manuals isn't the same what makes you think Quickload will be better.

I borrowed someones Quickload disk and have it on my computer, and I can tell you I wouldn't spend the money for computer generated guesstimates.

Sorry I might have cut the lemon slices too big to go with the Tequila I'm drinking. (sucking lemon humor)

 

[Aflac]

also for OBT do is the measurement with or without muzzle brake?

I sent an email to Chris long asking him this.he gave a very long in depth awesome answer, but the short version is it's the measurement of the barrel itself. Not any muzzel devices since they are separate pieces of metal the shockwave bounces at the edge and does not propagate through the muzzle device.

Also did you read his white paper on how to tune quick load? It's linked on this page Optimal Barrel Time Concept

For case capacity is just as simple as weighing a fired case empty (with primer) then slowly adding water until it is completely full and weighing it again. The difference is your case capacity. I do it about five times and average.

 

[Aflac]

Once I make all the adjustments and chrono some test loads to adjust burn rate I find my quick load numbers often end up within about half a present of what i predicted.

 

[Mad_Charlie]

I have Quickload and without a chronograph you have nothing more than a computer generated guesstimate. With a chronograph you are to change the burn rate of the powder until your Quickload velocity matches your chronograph. After you get the velocities to match you have no way to ensure the chamber pressure reading in Quickload are accurate.

Now think of all the different makes of firearms and all the variables. Example my factory Savage .223 has a longer throat than my AR 15 rifles do. Now show me how change Quickload throat lengths.

Bottom line, Quickload is good for ball park guesses but for accurate data you need a chronograph and a strain gauge pressure unit to get your chamber pressure. And if you had these two items Quick load would be worthless.

Now get your case capacities, case length, OAL and enter loading data from reloading manuals and see how far off Quickload can be. I don't mean to be a wet blanket but if the loading data in all the loading manuals isn't the same what makes you think Quickload will be better.

I borrowed someones Quickload disk and have it on my computer, and I can tell you I wouldn't spend the money for computer generated guesstimates.

Sorry I might have cut the lemon slices too big to go with the Tequila I'm drinking. (sucking lemon humor)

No, I'd say the slices are about right, I have Quickload, and I think that it is a cool toy, but I sure wouldn't use it for a manual, even QL says don't use it for a manual.

I has no provision for primers or other variations like throat length or leade angle etc. Chamber size is sort of covered by measuring capacity of the fired case in that chamber, but there is springback and powder residue to be considered.

Right now I think it's smarter than I am. I know that I haven't had the time to really learn the software and I don't really know how to do bore cross sectional area in a rifled bore yet. It is fun to play with but I don't depend on it.

Advanced users can edit all sorts of inputs but I sure as hell don't know what to change. I don't fully trust chronographs either, unless backed by drop tables.

I mostly just load for accuracy and watch for overpressure.

 

[jfseaman]

I guess I'm an 'advanced' user. For me QL is a great tool.

Smart reloading dictates using multiple data sources. I add QL to paper data and other data.

Those that say it's a waste are trying to make the world into an image of them selves. Very boring if we where all the same.

If I put the data in correct, QL predictions are dead on.

If you do your part, your tools will work properly.

 

[ShtrRdy]

For case capacity measurement, you need to measure the weight of added water to a FIRED case. Use a few cases and repeat the measurement. Different brands of cases, and even different lots, have different capacity.

Something else I've found to be important is to measure the length of the bullet you're using. I think quickload uses the cartridge overall length, and then the bullet length, to come up with the volume of the case - which effects pressure.

 

[DaleJ]

Will Quickload let user enter bullet weights that don't exist commercially? I'm referring to 257 cal 135-155 gr bullets. The old Powley powder computer tops out at IMR 4831. How much computer expertise is required to get the most out of the program?

 

[ShtrRdy]

Will Quickload let user enter bullet weights that don't exist commercially? I'm referring to 257 cal 135-155 gr bullets. The old Powley powder computer tops out at IMR 4831. How much computer expertise is required to get the most out of the program?

Yes, you can enter the bullet weight.

As for computer expertise, it's a matter of changing a number in a box on the screen. Then you have to click on another button to have it recomputed.

 

[Kirkd]

I sent an email to Chris long asking him this.he gave a very long in depth awesome answer, but the short version is it's the measurement of the barrel itself. Not any muzzel devices since they are separate pieces of metal the shockwave bounces at the edge and does not propagate through the muzzle device.

Also did you read his white paper on how to tune quick load? It's linked on this page Optimal Barrel Time Concept

For case capacity is just as simple as weighing a fired case empty (with primer) then slowly adding water until it is completely full and weighing it again. The difference is your case capacity. I do it about five times and average.

Thanks for the link. It answered some questions for me. I just bought quickload and finding information is had to come buy.