View Full Version : Cast vs FMJ loads
Lead Freak
03-07-2012, 10:59 AM
Most of the powder manufactures have very little data available for cast loads unless they are for factory cast boolits. I'm sure their risk management people had quite a bit of input into this. Is there a safe formula to use when working up a load for a cast boolit using jacketed data?
You need a couple editions of Lyman's Cast Bullet Handbooks or their Reloading Handbooks.
runfiverun
03-07-2012, 02:23 PM
ther ain't no difference in the loads.
septin the cast is lower pressure,given the same bearing length.
454PB
03-07-2012, 02:39 PM
ther ain't no difference in the loads.
septin the cast is lower pressure,given the same bearing length.
Agreed.....IF case volume is the same. Seating depth/case volume has a bearing on pressure.
Rangefinder
03-07-2012, 02:40 PM
Know your alloy and load for pressure consistent with its toughness. Then work velocities from there according to safety signs.
fredj338
03-07-2012, 04:37 PM
Safe formula is starting jacketed w/ equiv. lead bullets.
stubshaft
03-07-2012, 08:30 PM
You generally can't get in trouble with starting condom loads, then work up from there.
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