A
Anonymous
Guest
Theoretically, how would the pressure/velocity data be acquired?
Theoretically, in the case of pre-existing Savage loads, the velocity would be confirmed on my chronographs. The peak pressures would be from empirical data from Savage, Western Powders, Barnes, etc. Theoretically.
Theoretically, for new loads, original load design would be constructed by using conservative charges formed from interior ballistics software which has current verified burning rate (vivacity) values from closed bomb testing, resulting in coefficients of burning, pro/degressivity ratios, ratio of specific heats, applied to the caseless cartridge dimensions I have defined using Savage 10ML-II bore dimensions. Bullet travel is a matter of measuring the top of the bullet in my gun to the muzzle. After this, my work is verified by senior ballisticians.
"Theoretically," this is the most precise interior ballistics calculculation presently possible. However, it is still a calculated value and must be married to actual chronograph readings to have merit. So, they are. Calculated velocity values and realized values have been within 4%; some within 20 fps MV. Theoretically.
No ballistics work is exact, but we are within 5% of the critical values. My goals are conservative in terms of peak pressure and velocity, so a 29,000 PSI peak pressure burn model verified by chronograph may have an actual peak of 29725 PSI-- or, 28275 PSI.
Theoretically, it is not difficult. All loads used are 100% case capacity loads, and in the case of my caseless cartridge-- there is no projectile seating depth, as it sits on top of the powder charge. I have no constrictions of a bottle-neck to address.
I've had the benefit of Hartmut Broemel, Johan Loubser, Ken Oehler, Del Ramsey, Savage Arms engineers, and others to train me-- and the resources of Western Powders to confirm my results.
Theoretically.
Theoretically, in the case of pre-existing Savage loads, the velocity would be confirmed on my chronographs. The peak pressures would be from empirical data from Savage, Western Powders, Barnes, etc. Theoretically.
Theoretically, for new loads, original load design would be constructed by using conservative charges formed from interior ballistics software which has current verified burning rate (vivacity) values from closed bomb testing, resulting in coefficients of burning, pro/degressivity ratios, ratio of specific heats, applied to the caseless cartridge dimensions I have defined using Savage 10ML-II bore dimensions. Bullet travel is a matter of measuring the top of the bullet in my gun to the muzzle. After this, my work is verified by senior ballisticians.
"Theoretically," this is the most precise interior ballistics calculculation presently possible. However, it is still a calculated value and must be married to actual chronograph readings to have merit. So, they are. Calculated velocity values and realized values have been within 4%; some within 20 fps MV. Theoretically.
No ballistics work is exact, but we are within 5% of the critical values. My goals are conservative in terms of peak pressure and velocity, so a 29,000 PSI peak pressure burn model verified by chronograph may have an actual peak of 29725 PSI-- or, 28275 PSI.
Theoretically, it is not difficult. All loads used are 100% case capacity loads, and in the case of my caseless cartridge-- there is no projectile seating depth, as it sits on top of the powder charge. I have no constrictions of a bottle-neck to address.
I've had the benefit of Hartmut Broemel, Johan Loubser, Ken Oehler, Del Ramsey, Savage Arms engineers, and others to train me-- and the resources of Western Powders to confirm my results.
Theoretically.
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