I have a desk top from 2008...for QL only
QuickLOAD way off from reality. Solutions?
- Thread starter entoptics
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You can just change the bullet length to accomodate the seating depth and COAL if needed.
But our numbers are pretty close.
ShtrRdy
Well-Known Member
Would you please explain your observations and understand of those two parameters? Do you adjust powder Ba?
adam32+P
Well-Known Member
The weighting factor is about the shape/size of the cartridge. The more overbore the cartridge the less the weighting factor needs to be set. If it's at the default the results will be way off.
I haven't adjusted any of the powder defaults yet, I'm sure it would also make a difference though. It seems every variable makes a difference no matter how little it may seem.
QL gives me excellent data vs. chronograph for my .300 WM and .338 LM. The most key factors in quick load are the Case capacity in H20 weight, the barrel length from chamber to end of bbl, no to end of muzzle brake, and the burn rate and temperature on the day of shooting. The only issues I ever had of forecast vs. actuals was when shooting over 90 to 95 degrees when QL was run at 70 F.
Upping the temp in QL ups the burn rate dramatically or vice versa so it will reproduce actual environmental factors.
Leaving your ammo in the sun will impact it.
You also have true the burn rate of the powders you use in the model from lot to lot of powder.
Shoot some loads, and if they are off from forecast, adjust the burn rate until the actual velocity is matched.
Then use that new burn rate to forecast your next loads. It is smack on.
You cannot use mixed brass (volume differences Hornady may be 107 and Lapua 116 water weight) for reloading or use excessive crimping or neck tension perhaps without some deviation that will need to be history matched with custom adjustments to the model.
Upping the temp in QL ups the burn rate dramatically or vice versa so it will reproduce actual environmental factors.
Leaving your ammo in the sun will impact it.
You also have true the burn rate of the powders you use in the model from lot to lot of powder.
Shoot some loads, and if they are off from forecast, adjust the burn rate until the actual velocity is matched.
Then use that new burn rate to forecast your next loads. It is smack on.
You cannot use mixed brass (volume differences Hornady may be 107 and Lapua 116 water weight) for reloading or use excessive crimping or neck tension perhaps without some deviation that will need to be history matched with custom adjustments to the model.
WildRose
Well-Known Member
You're correct to an extent of course but so far my experience tells me it's a valuable tool especially if you're trying to load for a wildcat or orphan for which there isn't just a whole lot of published data.
I've found that if I start somewhere in the middle of the recommended loads and work up I rarely get myself into any trouble and usually save a lot of time and components vs just experimenting blindly.
I've been loading since the 70's and only once have I ever found myself making what could have been a critical error that could have seriously damaged a rifle or myself and so I'm pretty cautious wanting to make sure I've never repeated that mistake.
muzzletalk
Active Member
QL has to be trued to real-life examples. Take a safe load, shoot, Chrono it, and true QL to the results. H2O has to be true along with the Burn rate. You may also need to tweak the weight factor if the burn rate is that far off.
waveslayer
Well-Known Member
@muzzletalk is 100% correct. Justvlike anything in shooting. You must true it. BC'S , Ballistic calculators, and especially QL.
Get proper OAL, Case Capacity, Powder burn rate for the temp of that shooting day, and then you should be near good.
QL is a tool and is based on predictions. Use it accordingly. It's really helpful once you get the hang of it and want to see what new Brass versus old brass will do.
Get proper OAL, Case Capacity, Powder burn rate for the temp of that shooting day, and then you should be near good.
QL is a tool and is based on predictions. Use it accordingly. It's really helpful once you get the hang of it and want to see what new Brass versus old brass will do.
Tripodmvr7
Well-Known Member
QL needs to be calibrated to predict loads close to nodes calculated via the OBT method.
LoaderLarry
Member
I really appreciate reading the information posted by experienced shooters and reloaders.
I have learned a lot to help me in my short period of reloading.
What is difficult is not knowing what is being talked about with all the acronyms.
Is there a place that lists them and meanings so im not so lost.
Thanks.
I have learned a lot to help me in my short period of reloading.
What is difficult is not knowing what is being talked about with all the acronyms.
Is there a place that lists them and meanings so im not so lost.
Thanks.
ShtrRdy
Well-Known Member
What else do I need to tweak besides:
"I enter bullet length, COAL, case capacity, barrel length, powder charge. I then adjust Ba to get the velocity to match measured"
We all encounter that from time to time. Try the search function in the top right corner of the page. Hopefully somewhere in the search results will give you an answer.
muzzletalk
Active Member
I measure H20 in the fired case. Weight the case empty and then with water to the top of the case. Add that delta to QL where it asks for "Grains H2O". Sometimes you will find that the Ba change is really a large change. You can also compensate by adjusting the weight factor. Out of the box, QL is a useful tool but it gets a bad rap because the results don't match the expectations or results. Once you learn to true QL, it will become your favorite loading tool. it saves me a ton of time and money.
Zen Archery
Well-Known Member
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