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Quickload versus Alliant Recipe

Coolhand

I have just acquired a 22/250. The Alliant 2016 Reloaders Guide suggests a recipe of 33 grains of Alliant 10X for use with a 52 grain projectile.
Quickload says " DANGEROUS DO NOT USE ! "

Who is right and who is wrong? I have plugged into QL the H2O capacity of the cases I have,which is 43 grains, QL says 43.49 and for QL to produce a " safe " load I had to increase the water capacity up to 50 grains of water, which is 4.9 grains in excess of the predicted capacity of a 22/250 AI.

So what am I missing here ?

regards
Mike.
 
Coolhand said:
I have just acquired a 22/250. The Alliant 2016 Reloaders Guide suggests a recipe of 33 grains of Alliant 10X for use with a 52 grain projectile.
Quickload says " DANGEROUS DO NOT USE ! "

Who is right and who is wrong? I have plugged into QL the H2O capacity of the cases I have,which is 43 grains, QL says 43.49 and for QL to produce a " safe " load I had to increase the water capacity up to 50 grains of water, which is 4.9 grains in excess of the predicted capacity of a 22/250 AI.

So what am I missing here ?

regards
Mike.
Click to expand...
I would check other reloading manuals .
But you should be safe with QL I would load 10% less then QL and check your pressure . Larry
 
Using your known case volume and other rifle-specific parameters in combination with the factory preset burn rate for Alliant 10X, load up a few rounds at a predicted pressure safely below MAX (at least a 2% reduced charge weight from MAX). Use those to determine actual velocity, then adjust the burn rate factor (Ba) for Alliant 10X at the appropriate ambient temperature (when you recorded velocity) until predicted velocity exactly matches measured velocity. Then you will have "calibrated" Quickload to your specific setup and the subsequent predictions should be pretty good. By starting safely below MAX predicted pressure, you should have a reasonable safe margin given that your case volume below the factory preset value and you may not know the exact burn rate for your specific Lot of Alliant 10X. Even if your test loads clock at 50-100 fps slower than anticipated, you will still be "calibrating" QL as part of the process and safety is the more important concern until you have a better idea exactly where you are on the pressure curve.
 
Measure a case fired in your rifle before sizing. Enter weight, measure and enter case length, enter COL, select the correct bullet from list, enter barrel length, enter twist rate. I'm guessing you already did all this and it could be the Allient is wrong. I have had the same thing happen to me using info from Barnes Bullets. I was lucky that I didn't destroy the rifle or hurt anyone.
 
Dropping the charge down to 32 gr. in QL drops the pressure to 60ksi and the velocity to 3725 fps, about the same as the Alliant data's 3744 fps, which suggests that RL10 might be a "touchy" powder for the 22-250 ?
.
I don't load for the 22-250, but I might try a slower powder ???
 
Look at there reloder 15 data! Everyone else has 36-35.5 gr as max and Alliants max is over 38grs. I have worked up to 38 and its way way way too hot. I have found most of there data is pretty warm in the varmint calibers.
 
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I read a thread somewhere and a guy stated the 38gr load of re15 was over 4k with a 50gr bullet but only got two loadings in lapua brass before pockets wouldnt hold a primer.
 
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The load data produced by Alliant covers the use of the components that they used. It was actually tested for pressure. Quickload is a computer program and is only a prediction.
If you are using the same components as used in the Alliant data then you can safely use that information in your load. If you are using a different bullet case or primer then drop the load 10% and start there. Work the load up watching for signs of excessive pressure.
NEVER start loading at maximum suggested loads. Always start low and work up to get your best accuracy. If you have to exceed the maximum lised load to get accuracy then change the powder to something else and work up the load again.
 
mtngun said:
Dropping the charge down to 32 gr. in QL drops the pressure to 60ksi and the velocity to 3725 fps, about the same as the Alliant data's 3744 fps, which suggests that RL10 might be a "touchy" powder for the 22-250 ?
.
I don't load for the 22-250, but I might try a slower powder ???
Click to expand...

mtngun , on the Alliant 10X Bottle it states ;

" SMOKELESS SMALL BORE RIFLE POWDER"
' GREAT IN .223 AND 22/250 WITH LIGHT BULLETS * EXCELLENT FOR BENCH REST CARTRIDGES* OPTIMUM VELOCITY IS SMALL CAL VARMINT LOADS '

regards
Mike.
 
Of course I will start at 10% less but I do wonder sometimes at published loads which as we know are nothing more than a guide or starting point, I have never used the MAX ( or close to it ) predicted by QL.

Thanks for your collective comments.

regards
Mike.
 
10X worked really good in 22-250 for me with 40g, the Alliant published max load for 10x and 40g is not out of line from my experience, but for 22-250 and 50g-55g 10x wouldn't be on the short list of powders to try, first choice for me would be IMR4895/H4895/2895, or something in the 4895 range. An old fast lot of pulldown IMR4895 was my fave for 50g-55g in 22-250.
 
My QL shows 65,800 psi with 33gr of RL-10 under the 52gr Speer HP. However....

Looking at Alliants data, they show they made 2,744 fps with their 33gr charge...

When I adjust the charge weight in QL to match Alliant's velocity (24"bbl) I end up with 32.2 gr and 61,300 psi.

Nevertheless I've seen this go both ways so many times. Always remember that Reloading Manuals are NOT reloading gospel, but more like Reloading GUIDES. Hence why we ALWAYS start low and work up WATCHING FOR PRESSURE SIGNS.

Here is another good one...
Hodgdon shows 41 gr of H-4831 Max for the 243win with 105 grainers, while one of my 243's never reached any pressure signs all the way to 45.8 gr ( 4.8 gr above Hodgdon's MAX, that's amost 12% more powder !!!) took me 3 range trips to make it up to 45.8 gr. First trip up to 41gr (my 41 gr showed 200fps slower than Hodgdon's 41gr!), second trip up to 43gr (and 43gr also showed very slow fps), so I went for one more round of testing, and never reached pressure signs and surpassed hodgdon's velocity by 75 fps, but best accuracy was at 43gr. End of story.
 
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