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If your mould is a flat base bullet then gas checks cant be used, otherwise they are fitted before lube and sizing.

Also the fact that the twist rate was 1:72 and the projectile was only 1.5 times bore diameter, basically a oblong round ball with a hollow nose and base. But if you did hit something woomph!!!

Good luck at 1000 with a snider, I could watch that all day. This is the creedmore position mentioned before which was popular for long range. With a short barrel you may want to ensure your knee is...

I think that smokeless stuff is just a passing fad.

Shot my trapdoor on the trentham range back in the 80s at 800 yards the guys in the butts heard fall of shot but no idea where. Supposedly if you saw the smoke you had enough time to start running...

I have both lyman steel and lee aluminum ones. The lees are much easier to use and forgiving. Steel takes time to get to temperature and consistently cast with.