Discussion in 'Handloading and Reloading' started by coondogger, May 2, 2021.
In a rifle its speed a lot of the time. I hit the 2200fps barrier waaaaay before pressure become even a consideration.
On the gas check question. If bullet weights are same, seating depths the same.....it should present no problem.
On the .458 cast bullet question. I assume that you mean, a cast substituted for a jacketed bullet. Obviously, you would have to work up a load for the cast. Also, the bore diameter may play into this a bit. Generally.....cast bullets tend to shoot more accurately if they are somewhere between 0.001” to 0.003” larger in diameter than the firearm bore. “Slugging” the firearm bore will give you an indication of about where you would want to be with a cast bullet. I also said “generally”......this is not to say that a cast bullet of same size as the bore will not shoot accurately. However, leading and accuracy may be issues.
Also, it most situations you should not interchange cast and jacketed bullets, without a thorough bore cleaning. Again as generality......cast bullets do not shoot well through a bore with jacketed bullet fouling remaining! If you have a very smooth, slick bore, this may not be a huge issue. A somewhat rough bore has more copper fouling which has a detrimental effect on cast bullet accuracy!
Obviously the statements above are my opinions and should be valued as such. memtb
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