A
Anonymous
Guest
The basic premise is this: all the velocity you can get, but keeping the sabot from excessive damage all the while. Velocity has nothing to do with pressure, generally. Nor does recoil. A high recoil load does not mean higher pressure-- it can be dramatically less.
A high velocity load does not mean high pressure, either. The faster of two loads, same bullet, can certainly be a lower pressure load based on propellant characteristics.
How much pressure? This is a generalization, and actual bore smoothness, rate of twist, and a host of variables are at play-- not the least of which is heat.
It just makes good sense (to me) to stay below the "generalization" of the all-condition maximum peak pressure accuracy reliability threshold as basic load theory for sabots. That figure, a generalization, is 35,000 PSI hot / cold rain or shine. (MMP)
Not a huge impairment. Take a look at the hottest saboted shotshell slug loads, with rock hard sabots. They do all their work at sub-12,000 PSI. We can focus on a reliable optimum of about 300% of that. :idea:
A high velocity load does not mean high pressure, either. The faster of two loads, same bullet, can certainly be a lower pressure load based on propellant characteristics.
How much pressure? This is a generalization, and actual bore smoothness, rate of twist, and a host of variables are at play-- not the least of which is heat.
It just makes good sense (to me) to stay below the "generalization" of the all-condition maximum peak pressure accuracy reliability threshold as basic load theory for sabots. That figure, a generalization, is 35,000 PSI hot / cold rain or shine. (MMP)
Not a huge impairment. Take a look at the hottest saboted shotshell slug loads, with rock hard sabots. They do all their work at sub-12,000 PSI. We can focus on a reliable optimum of about 300% of that. :idea:
