Cast Lead Thread ?

Got the SPANZ brass in 577-450 and 577S plus the rifles.
I used a 45 cal Tony Hawkin's bullit, paper patched. It shot superbly.
Unfortunately I never owned the mould but have recently picked up one on Tardme. It is however a different weight to my original. Have yet to try.

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Originally Posted by Tokoroa Cast Projectiles

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.

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. 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?

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Originally Posted by Jhon

. 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?

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for reduced loads personally, I use a powder that is way slower than one typically used for caliber
for example, I have a Remington rolling block in 6.5x55 it's only rated to about 40K psi when new (sammi 6.5x55 is 55k) so no factory ammo for this puppy and it's old and I will keep it well under that no point in pushing your luck

i use adi 2225 normally for magnums and certainly to show for your standard 6.5x55 load
at 45gn with a 140gn bullet, this gives me 90% case fill for good ignition
but keeps pressures down to 27,000psi

it's a good way of doing it because there is simply no way you can fit enough powder in the case to get into trouble with pressures

both I and @akaroa1 have developed loads this way and prefer it to the small charge of pistol/shotgun powder method

although that being said we aren't trying to go subsonic
the 6.5 load above is around 2450fps extremely slow for a 6.5 but certainly not subsonic

Yeah I'm using H1000 in the 7x57R and 30-40 US no5 rolling blocks because I can run a 100% full case of relatively slow powder
I get modest velocity with low pressures in what are strong safe vintage rifles.
But they are genuinely rare and there is no need to push them for Lazer flat trajectories when the sights are not capable of hitting a deer beyond 100m

Optimum load with slow powders is 90% - 100% you can get away with less using the fast powders like Red Dot and 700X AS30
2206H/H4895 is good for mid range loads with cast loads in the 1600fps to 1900fps my .308 and .303 like 26.0 - 28.0 grains
2207 is good for the 45/70 in Marlins