What powder did IVI use in 7.62 ball ammo?????

Reloaders use what's called "Canister Grade" powder. It's like buying spark plugs. If your engine needs an xyz123 plug, one made today or one made 20 years ago should interchange.
The powder sold under that name will have the same burn rate and bulk density, regardless of the year of manufacture.

Ammunition companies "might" load ammo with canister grade powder, but don't need to. They just need to use a powder that meets thier needs.
 
A few years back making Mexican Match out of IVI was something a lot of shooters started doing once the DND stopped issuing ammo to the DCRA. I have had both ball powder and stick powder come out of 2 rounds from the same stripper clip on several occasions.
 
Ganderite said:
There you go. Win846 is a ball powder similar to BLC2.

The two stick powders are Canadian made powders (by Expro) that look like 4895, but a bit faster. Closer to 3031.
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Ganderite, what powder was CF 8506 used in? It is about the cleanest burning stick powder I have ever used, and seems to be a tad slower than 4320. It is easily the powder that gives the most accurate loads with high velocity in several 30-06 rifle I have loaded for.

Ted
 
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I don't know. I have 16 pounds of it and have not used because have not yet looked it up to see what speed it is. But a bit slower than 4320 would be very useful for 303 and 308 with heavy bullets.

I did some work for Expro and in the process picked up some powder samples. I seem to recall looking at a catalog once and asking them for some 8506 but never got around to trying it.

I will look in my records and report back if I find any data.
 
I have some of the EXPRO data sheets (Expro makes IMR brand powder.) They assign relative burinng rates to powders, with 4350 being 100.

Question was about 8506. It is about the same speed as 4320.

4227 180
4198 160
3031 135
4064 120
4895 115
4320 110
8506 108
4350 100
4831 94
7828 84
 
btridge said:
Does anyone know what powder IVI used in 1979 in their 7.62 ball C21A1, bullets are 147.5 gr FMJ and the powder avg is 42.7 gr.:confused:
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There are 2 types of powder out there, exact "Labeled" burn rates (IE. BLC2, IMR 3031, H380, Reloader 22, ect). Then there is the other kind which is neither here nor there, and this is the stuff that is sold to Ammunition companies, military, ect. They are told, "well, the powder is somewhere between H335 and H4895 (Or IMR 3031-IMR 4895, ect.)" Powder company then suggests what the equivalent load data should be.

There are 2 ways you can go about replicating the '79 IVI ball load. Load for pressures and velocity that come close if not match the IVI load, or to make it more difficult, go through tons of powder/load data, find a powder that given a charge of 42.7 (42-43) that will "theoretically" yield the approximate 2750fps (give or take 50fps) and ALSO matches same ball park of the given pressures.

KEEP IN MIND (BIG PLEASE HERE)

If this load is for 308 Garand, M14/M1A, AR-10, or other suck militaary type semi-auto rifles (probably throw in sporting semis too), they are ONLY designed to handle medium burn rate powders. ONLY! To slow or to fast can cause the gun to be damaged or much worse. I have seen a Chinese M-14 that a guy ran his buddy's reloads through, and as it turned out, the reloads were in fact for a bold gun, over pressured for an M-14 and he was running a slow burn rate powder.

http://www.reloadbench.com/burn.html Here is a burn rate chart, and the military Semi(Full) autos should be kept with in #94 (IMR 3031)-#120(IMR 4064). Trying to reproduce the ball load, your best bet is to check these powders to begin with.
 
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