While smokeless powders designed for use in small arms ammunition are exempt from ATF regulation under 18 U.S.C. Chapter 40 and the regulations in 27 CFR Part 555, it is advisable to keep primers and powder stored separately, and properly.
Also, powder should never be enclosed in anything that would stand up to pressure. Powder by itself just burns, but enclosed in a gun safe for example - as we all should know - will cause a lot more damage to health and property if it catches fire or too much heat.
I also suggest pulling up state and local regulations.
This accounts for Florida, but is advisable nonetheless:
69A-2.009 Storage; Smokeless Propellant.
(1) All smokeless propellants shall be stored in ICC-approved shipping containers.
(2) Smokeless propellants intended for personal use in quantities not to exceed 20 pounds may be stored in residences; quantities over 20 pounds but not to exceed 100 pounds shall be stored in a wooden box or cabinet having walls of at least 1 inch nominal thickness.
(3) Not more than 20 pounds of smokeless propellants, in containers of 1-pound maximum capacity, shall be displayed in commercial establishments. Commercial stocks of smokeless propellants over 20 pounds and not more than 100 pounds shall be stored in approved wooden boxes having walls of at least 1 inch nominal thickness. Not more than 100 pounds shall be permitted in any one box.
(4) Commercial stocks in quantities not to exceed 750 pounds shall be stored in storage cabinets having wooden walls of at least 1 inch nominal thickness. Not more than 400 pounds shall be permitted in any one cabinet.
(5) Quantities of smokeless propellants in excess of 750 pounds shall be stored in magazines constructed in accordance with Rule 69A-2.007, F.A.C., and located in accordance with Rule 69A-2.006, F.A.C.
Rulemaking Authority 552.13 FS. Law Implemented 552.13 FS. History–New 6-25-66, Repromulgated 12-24-74, Formerly 4A-2.09, 4A-2.009.
Instead of buying an old fridge or using a gun safe, I strongly suggest building wooden cabinets instead. That is easy to do and cheap.
Also, powder should never be enclosed in anything that would stand up to pressure. Powder by itself just burns, but enclosed in a gun safe for example - as we all should know - will cause a lot more damage to health and property if it catches fire or too much heat.
I also suggest pulling up state and local regulations.
This accounts for Florida, but is advisable nonetheless:
69A-2.009 Storage; Smokeless Propellant.
(1) All smokeless propellants shall be stored in ICC-approved shipping containers.
(2) Smokeless propellants intended for personal use in quantities not to exceed 20 pounds may be stored in residences; quantities over 20 pounds but not to exceed 100 pounds shall be stored in a wooden box or cabinet having walls of at least 1 inch nominal thickness.
(3) Not more than 20 pounds of smokeless propellants, in containers of 1-pound maximum capacity, shall be displayed in commercial establishments. Commercial stocks of smokeless propellants over 20 pounds and not more than 100 pounds shall be stored in approved wooden boxes having walls of at least 1 inch nominal thickness. Not more than 100 pounds shall be permitted in any one box.
(4) Commercial stocks in quantities not to exceed 750 pounds shall be stored in storage cabinets having wooden walls of at least 1 inch nominal thickness. Not more than 400 pounds shall be permitted in any one cabinet.
(5) Quantities of smokeless propellants in excess of 750 pounds shall be stored in magazines constructed in accordance with Rule 69A-2.007, F.A.C., and located in accordance with Rule 69A-2.006, F.A.C.
Rulemaking Authority 552.13 FS. Law Implemented 552.13 FS. History–New 6-25-66, Repromulgated 12-24-74, Formerly 4A-2.09, 4A-2.009.
Instead of buying an old fridge or using a gun safe, I strongly suggest building wooden cabinets instead. That is easy to do and cheap.