Good anology Case! That is exactly the problem with reduced loads in centrefire loading.Case said:The reason pressure can rise to dangerous levels when charges are reduced too much is analogous to someone trying to push a boulder too large for his size and strength. He huffs and puffs and busts a gut and the boulder barely budges..
Alliant has a pretty good technical support section. If you ask them the question with the actual recipes you intend to use they will give you a pretty good idea on expected results and safety concerns. They often have information that is not published as there is not a precieved demand for that information or it is potentially unsafe.5Shot said:Can the loads found in the Lyman Handbook be reduced to provide less pressure/recoil?
I was specifically looking at one of the loads using Unique, since it is running at 11K PSI and I would prefer it to be closer to 10K.
Having a heavy bullet with a heavy crimp in a metallic cartridge is not at all like an underload in a shotshell. In the former, you actually have a sort of obstruction in the bore (even though the bullet is technically not in the barrel yet). The added resistance of the heavy crimped bullet in addition to the already sizeable inertia that must be overcome to get the bullet moving makes for a dangerous situation....... although there is considerable doubt as to how much danger there would be from an underload.Case said:The reason pressure can rise to dangerous levels when charges are reduced too much is analogous to someone trying to push a boulder too large for his size and strength.
He huffs and puffs and busts a gut and the boulder barely budges.
Exactly the same effect can occur in metallic cartridges with a heavy bullet and a heavy crimp.
I'm not sure if this would occur with a slug in a shotshell, but I'd nevertheless be very cautious about reducing a published load by much.