Could someone with Quickload please calculate some pressures for me. Would love to know the velocities too, actually since my Chrony died. I have worked up a couple of loads in my 50 Beowulf and would like to know what kinda pressure I am generating.

Load 1

case volume - 69.7 gr of water
case length 1.65"
COL of 2.1"
334 gr FMJ Rainer bullet
CCI200 primer & CCI350
Powder charge is 50.2gr of IMR 4227

Load 2

case volume - 69.7 gr of water
case length 1.65"
COL of 2.1"
334 gr FMJ Rainer bullet
CCI200 primer & CCI350
Powder charge is 48 grains of W296

I have fired both of these in my gun without any significant pressure signs.

Thanks for the help.

Kent

[ 10-13-2003, 20:36: Message edited by: Kent in IA ]

Isn't there anyone with Quick load?

Ok, ok, I own a copy of it.

I don't know what the bullet length is, but assuming a seating depth of 0.3" and using the start pressure (engraving force) QL suggests using for jacketed pistol bullets, the 4227 load is predicted to be 50 ksi with the charge being rather compressed. The 296 is predicted to be 39 ksi. Both are predicted to be near 2000 fps from a 12" barrel; I don't know what length you are using.

That said, I NEVER use QL in the way you describe. I've never found a powder in it's database for which such-and-such a charge matches published results. The program is simply not accurate enough to do so. The manual with which it comes list a zillion caveats regarding all the crude simplifications it uses to model interior ballistics.

I have found it rather good at predicting what sort of fps you might get given case size, barrel length, bullet weight, and pressure limits. It also gets you close as to powder speed and charge weight, but exact results -- such as you are asking for -- are not possible.

Karl