Will someone run three 243 loads for me?

All loads will be 243 brass using 41 gr. of IMR 4320 powder and 85 gr. Speer (1213) btsp bullet. The only variation is the water capacity of the three loads-different cases - is 53.2, 53.5, and 53.8. Finished round has a col of 2.65.

What I am looking for is the difference in velocity caused by the different case volume .

Thanks
Eyehawk

it will be nuthin or zero.
0.6grs of powder will hardly change the velocity.
that much case capacity won't either, run the champher tool over the case mouth again on the heavy ones if it really bothers you.

if 24" barrel then:

53.2 - 3213 fps - 60017 PSI
53.5 - 3205 fps - 59331 PSI
53.8 - 3197 fps - 58662 PSI

Jiri

Thanks
Eyehawk