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KB International
https://www.kbtacticalstar.com/index.php?route=product/product&product_id=536

Ost-Front - may or may not be in stock...

Yes, I agree the Martini-Henry - .45LC chamber adapter, like this one, is what SMLElikeyoumeanit has:

https://www.milsurps.com/showthread.php?t=29008&

I'm with you on the load... my Pietta 1858 replica with a .45 Colt conversion cylinder, Unique 6.0 grains, Win Large Pistol primer for Standard or Magnum (for the extra flame time), Missouri Bullet...

As he approached 80 my father, a large man, found that a medium-light .243 Win worked well given his declining strength/shoulder.
Noting that the .243 Win cartridge is simply the necked-down .308...

Bullseye if for pistols
IMR 4350 for me an my old 1903

And don't forget to put Locktite 271/290 on the threads! ;-)

True, Speer Number 7 page 184, .270 Win loads 170 grain jacketed round nose, using standard large rifle primers except as noted:

H570 - min 61.0 grain - 63.0 - max 65.0
4831 - min 52.0 grain -...

Here is a pretty cool article discussing recoil/velocity:
https://sciencing.com/do-calculate-recoil-velocity-6592101.html

Recall that anytime you increase the effective weight of the rifle the recoil velocity of the rifle when fired against the shooter's shoulder decreases. Obviously the barrel oscillations will change...

I've seen some Win 296/H110 turn up recently:

Win 296
https://www.gunbroker.com/item/907536466
https://www.gunbroker.com/Reloading-Supplies/search?Keywords=296&Sort=13&PageSize=24

H110...

Yes you are missing that the WC-xxx powders are made at and labeled by General Dynamics/St. Marks in Florida then pulled down for re-sale to to the general public at Lake City Ammunition Plant in...

The recent Ballistic Assistant powder burn-rate chart including General Dynamics/St Marks' manufactured powder:...

No these are not triple-base IMR 7383 spotter powder used in spotter 50s. WC-857 is the double-base pulldown main-propellant charge for the 50 cal tracer (see General Dynamics (St. Marks) link...

"Triple-base powders use a solvent-based process similar to the double-base powder process (Meyer 1987; Radford Army Ammunition Plant 1987). Nitrocellulose and nitroglycerine are premixed with...

You're welcome,
The spotter-tracer ammo in action:

https://www.youtube.com/watch?v=-Iw9wBDAN4c&t=15s
https://www.youtube.com/watch?v=xSm2Imkb9lU...

Auction prices are variable. I picked up mine for less than 2 Benjamins (16 lbs--$200/16lb = $12.50/lb)
try GunBroker auctions search for "16 LB" without the quotation marks

338 Lapua re-loaders could also consider currently available/affordable St Marks manufacture spherical WC-867 with (2) 8 lb jugs--16 lbs total--typically selling for less than 2 Benjamins over at...

Perhaps you will find this useful noting that as IMR 7383 is a high energy, highly volatile triple base propellant with military flash-suppressant characteristics we are unlikely to see it ever...

Interesting… on the other hand we all know whose weapon Josey Wales used to finally put down Redlegs Terrell in the movie 
Browsing through history:...

403-200 WFN - PC - Arsenal Molds
http://arsenalmolds.com/bullet-molds?product_id=161

LBTMolds
"10MM / 40 CALIBER AUTO PISTOL If you have a pistol that is stubborn about what feeds through it,...

Recently, I have seen 16 LB auctions on GBroker/Ammo/Ammo Reloading of Kazan, Russia manufacture powders FSP-680, FSP-747, FSP-749, FSP-759, WC-846, WC-857. The FSP-759 Smokeless Rifle Powder 8-LB...

Read the Mil-Spec (MIL-P-60356A) for CBI here, see page 3/3.1.2/3.2 for powder ingredients/proportion/flake size (click "Next" or "Back" in blue near the page top-center to advance or retreat a...

Another CBI definition:
"What Are Clean Burning Igniters (CBI)?"
"CBI is a a flaky material, and is also kept in bags, though in much smaller amounts than M6. CBI is 98% Nitrocellulose, with small...

From an old IAA/cartridge collectors/Propellant Destruction discussion:
"If they were breaking down bag charges for 155s and such, there is no telling how they stored the initiator bags, which...