Case In Point: Unique.
Unique has existed 120 years, absolutely NOTHING about it is "the same"
Alliant still has, in it's possession, THE FIRST BATCH, stored, that they test EVERY CURRENT BATCH AGAINST, and the "modern" Unique is as much the same as it ever was.
Bullseye, another Case In Point, it is 122 years old, a Laffin & Rand Co. powder created in 1898.
Red Dot was created in 1932 along with 2400.
Herco, somewhere in the 1930's.
1965 brought us Green Dot and Reloader-7.
Blue Dot dates to 1972.
How about Dupont IMR powders?
3031 dates to 1934.
4064, 4198, 4227, and 4320 were created in 1935.
4350 came to be in 1934.
4831 was released to the public in 1973, BUT, was the powder used in 20mm Oerlikon cannon shells in WW2, Bruce Hodgdon was selling it (Gi surplus/pulldown) as H4831 as of about 1949.
4895 came to be in 1962.
Then there's the Olin/Winchester spherical powders that came to the public in the 1950's, but they were making WC846/BallC during WW2.
- 231 reformulated 230 with 22.5 percent nitroglycerine and no deterrent coating so grain size and shape could be changed to minimize bridging in loading machines.]
- 296 reformulated 295P introduced in 1973
- 571 magnum shotgun propellant introduced in 1973.
- 748BR Ball Rifle propellant introduced in 1968 and replaced by 748 in 1973.
- 760BR Ball Rifle propellant (similar to H414) introduced in 1968 and replaced by 760 in 1973.
- 780BR Ball Rifle propellant introduced in 1968 and discontinued in 1972.
- 785 (similar to H450)[SUP][11][/SUP] introduced in 1973 for the .243 Winchester.
When Bruce Hodgdon ran out of GI Surplus powders to sell (that DID take a while), he started having the original makers make some for him to sell,
- BL-C (Lot 2) was newly manufactured by Olin in 1961 with 10 percent nitroglycerin, 10 percent diphenylamine stabilizer, and 5.75 percent dibutyl phthalate deterrent, but without the flash suppressant used in the surplus military propellant
- H110 was surplus .30 carbine powder introduced in 1962 for loading the .30 carbine and magnum revolver cartridges. It IS re-labeled W296.
- H335 was surplus Olin WC844 for full-charge loads in the .223 Remington and .308 Winchester.
- H380 was Olin WC852 for full-charge loads in the .30-06 Springfield
- H414 was introduced in 1967 for full-charge loads in the .270 Winchester and .30-06 Springfield. This IS W760.
- H450 was for large capacity and magnum rifle cartridges.
- H870 was surplus M61 Vulcan propellant introduced in 1959 for loading very large capacity magnum cartridges with bore diameter of 0.3 inches (7.6 mm) or less
- HS5 was introduced in 1963 for shotgun field loads.
- HS6 was introduced in 1963 for heavy shotgun loads. This IS W540.
- HS7 was introduced in 1973 for magnum shotgun loads. This IS W571.
- Trap 100 was introduced in 1973 for shotgun target loads. This is the discontinued W452.
- HP38 was introduced in 1975 for target loads in handguns., this IS W231.
Canister Powder makers provide to us handloaders VERY MUCH "the same" gunpowders, decade after decade, no matter where and with what, the powders get made.
NONE of them are "the same" as they were when they were invented, due SOLELY to environmental and financial reasons of the processes, but every one of them works the same as they ever did.