Cast Lead Thread ?

[Jhon]

I use the 50% as a safety measure with small cases and fast powder, I have had light charges barely get the projectile out of the barrel, the last one was a 7mm08 with a cast bullet developing a subsonic load I had a nice group at 50m
the next load was 2 tenths of a grain lower the first shot bounced off the ground halfway to the target, I was using Trail Boss and started with Hogdgons recommended 70% full case and worked backwards, after experimenting quite a bit
50% is safe in .308 size cases, Red dot and 700X are almost as bulky as Trail Boss and make a good substitute, Yes the slower powders can be dangerous if loaded below the recommended minimum start load, though the "Secondary Explosive Event"
as it is called has never been replicated in a lab, but it is still considered real and does happen, the Hogdgon website has reduced loads listed for most popular calibres check them out it is very interesting, If looking for lighter recoil use the fastest powder
listed for the bullet you are shooting as long as the velocity is high enough to expand the bullet or use a lighter bullet.

. The famous 13gn red dot in a 30 cal case "The Load" is no where near 50%. - fast.powder. use 6gn Noble Shotgun 78 in 308. Close equivalent to Red Dot and AS30N. No filler, no issues. Same with 303B. You run into trouble with fast unpredictable pressure spikes above 13gn. Like when your chrono which has been recording 1650fps suddenly shows 2400! And it takes a mallet to lift the bolt. Yikes!. Shot my last fallow with 308, cast 200gn, 6gn Nobel 78. Subsonic.

Your normal rifle powders you mention 50% - I thought optimum was 80% above. Except for a few with published load data for reduced loads..what your referring to yes?