Quote: It matters not what powder you use in them. If they are sound use low pressure loads. Black or nitro low pressure makes no difference. Do not confuse low base shells with low pressure. Not all of them are.
Agree.
Plenty of people here use Low pressure Nitro in BP guns.
Someone did once try to explain that the pressure curve / spike was less for low pressure nitro than BP but would need to have it confirmed by someone in the know.