Quickload help?

[gixer1]

Can someone run a load the QL for me please?

6.5CM, RS62, Sierra 140 SPBT CCI450 primer, 24” barrel, seated depth to OGIVE 2.207”.

I have loaded from 42gr up to 46, no pressure signs so far however these are a fair bit shorter than a previous load and have increased velocity significantly - I assume due to the deeper seating depth.

Just curious to see what it says.

RS sent me load data however it seems to start at 42gr with a max of 10% above that so 46.2gr.

Thanks in advance.

Gixer

 

[mealiejimmy]

Gary,
QL can't deal with ogive seating depth - it needs COL
Also, measure the actual capacity of your fired cases (primer not removed) - that can make a huge difference
QL uses the nominal case capacity as opposed to actual case capacity
For example, in 22-250, QL uses a nominal case capacity of 43.49 grains of water. My Lapua cases have an actual capacity of 46.1 grains of water.
That difference in capacity makes big difference to the pressure and MV calculations
QL also does not have any input for the type of primer used
I got load data from RS (they use QL) and note that there can be up to +/- 10% variation in burn rate from one lot of powder to another which can result in significant effects on pressure and MV

Cheers

Bruce

 

[borbal]

If you are going to measure the case capacity yourself (always a good idea) then you might like to try to the P-Max online internal ballistics simulator. It is free to use and usable on any device with a browser.

 

[User00040]

Just get Gordon's (RIP) Reloading Tool, you'll need to register but it's free and better than Quickload!

 

[markyw]

I think the P-Max vs GRT vs Quickload is like the discussions about reloading manuals. Just different reference points with different parameters. If you know your parameters, then refer to various sources to check safe loading. I did some comparisons on QL vs GRT at the weekend and found them to be actually pretty close. I mainly use P-Max when out and about to check things.

Regards

Mark

 

[Norfolk Deer Search]

I personally think quick load is cheating, and whatever Did all do before it was available!

What i did you pick a bullet, pick up powder roughly look on the powder speed chart for how much you want for the rough speed that you need -10% work your way up as easy as that.

 

[gixer1]

I personally think quick load is cheating, and whatever Did all do before it was available!

What i did you pick a bullet, pick up powder roughly look on the powder speed chart for how much you want for the rough speed that you need -10% work your way up as easy as that.

How does that explain the change in pressure and velocity relating to seating depth though?

Which is what I’m after…developing a load is fine but I want to know which end of the spectrum it’s on.

 

[Norfolk Deer Search]

Looking at the primer and the case neck will tell you all you need to know!

Thats what we used to do before QL existed

 

[mealiejimmy]

I personally think quick load is cheating, and whatever Did all do before it was available!

What i did you pick a bullet, pick up powder roughly look on the powder speed chart for how much you want for the rough speed that you need -10% work your way up as easy as that.

Same as Telescopic sights, night vision device and thermal imagers are cheating
Nothing wrong with something which can make life easier, safer, quicker, more reliable etc,etc
Just because you don't like it doesn't mean that others should be forced to resort to your prehistoric method

Cheers

Bruce

 

[Norfolk Deer Search]

Same as Telescopic sights, night vision device and thermal imagers are cheating
Nothing wrong with something which can make life easier, safer, quicker, more reliable etc,etc
Just because you don't like it doesn't mean that others should be forced to resort to your prehistoric method

Cheers

Bruce

Thats true I’ve got to face facts I am getting old!

 

[Bowland blades]

Quickload is actually just a guide ! Frankly I hardly ever use it now , it's often very wrong and pessimistic
Standard safe loading practices a chronograph and measuring cases will tel, you more accurately, chronograph will tel, you how fast its really going at your altitude.

 

[Kevgun]

The other thing to watch out for is Small or large Primer cases, I was developing a load for my 6.5 CM with Lapua SRP brass, and going with the max book load the brass didn't obturate properly and the FPS wasn't what I was expecting. with a quick post on a forum @Laurie answered it concisely and said I'd need to increase my powder charge by upto 1.5 grains on account of the 1.5mm flash hole of the Lapua SRP brass
He was spot on, Quickload is a useful tool to simulate powder use use for a given bullet, if it's not listed in the manual.

For instance most of the Manuals list N140 for a 22.250 with a 50 grain Vmax , but with a short 20" barrel ( fitted to most Tikka T3's ) N140 is a bit slow for NV use because of the whiteout ( not a problem with thermal ) when taking a shot, but N135 is better because all the powders burnt before it enters the moderator, hence no white out, all this was discovered by modelling the load before I even assembled it, but like Bruce says its important to enter all the info correctly, as with all things computer related, " rubbish in, rubbish out".

 

[vitalspark]

Just get Gordon's (RIP) Reloading Tool, you'll need to register but it's free and better than Quickload!

Thanks caberslash for the heads up. I've been using QL since 2014 but am too tight to fork out for an updated version. Registered for and downloaded GRT. Given it a test against my existing QL and field data and very impressed.
ATB

 

[gixer1]

Looking at the primer and the case neck will tell you all you need to know!

Thats what we used to do before QL existed

I get what you are saying Lee but No, it won’t…not in the detail I want. You can throw just about any load combination through…but I like to know what’s going through my rifles.

 

[gixer1]

The other thing to watch out for is Small or large Primer cases, I was developing a load for my 6.5 CM with Lapua SRP brass, and going with the max book load the brass didn't obturate properly and the FPS wasn't what I was expecting. with a quick post on a forum @Laurie answered it concisely and said I'd need to increase my powder charge by upto 1.5 grains on account of the 1.5mm flash hole of the Lapua SRP brass
He was spot on, Quickload is a useful tool to simulate powder use use for a given bullet, if it's not listed in the manual.

For instance most of the Manuals list N140 for a 22.250 with a 50 grain Vmax , but with a short 20" barrel ( fitted to most Tikka T3's ) N140 is a bit slow for NV use because of the whiteout ( not a problem with thermal ) when taking a shot, but N135 is better because all the powders burnt before it enters the moderator, hence no white out, all this was discovered by modelling the load before I even assembled it, but like Bruce says its important to enter all the info correctly, as with all things computer related, " rubbish in, rubbish out".

This is along the lines of why I want to check Kev, it’s SRP brass and I’ve had up to 46gr of RS62 which is making some interesting crunchy sounds at a new seating depth I am trying, and the velocity has jumped up considerably - so getting the QL input can’t hurt.

 

[vitalspark]

Can someone run a load the QL for me please?

6.5CM, RS62, Sierra 140 SPBT CCI450 primer, 24” barrel, seated depth to OGIVE 2.207”.

I have loaded from 42gr up to 46, no pressure signs so far however these are a fair bit shorter than a previous load and have increased velocity significantly - I assume due to the deeper seating depth.

Just curious to see what it says.

RS sent me load data however it seems to start at 42gr with a max of 10% above that so 46.2gr.

Thanks in advance.

Gixer

Hi Gixer.
46gr of RS62 is very close to a compressed charge @ 99.3% fill. However that assumes a COAL of 72.76mm and case volume of 52.5gr H2O. If you are seating to a shorter cartridge overall length, and/or your actual case volume is less than these standard values then you are likely compressing the powder in the case hence its a bit 'crunchy'. You really need to to measure your COAL, at your given OGIVE, and also measure your actual case volume for QL or other tools to give accurate data out.

ATB