Powder Cross Reference

[Nam62]

Thanks for putting up the chart I tried several methods but had no Luck.

[John Boy]

https://www.lhs-germany.de/en/servic...ng-rate-chart/

[Rapier]

I will offer a suggestion, a procedure I follow, I use equivalent surplus powders to fire form brass and break in barrels, to save on burning my best powders and bullets. Say B is = to X, I use starting load for X less 2 grains for the start for B, plus a lighter, pulled bullet. Then work up as I go forward. With the current component market, having a cheaper alternative works well for me.

I am actually an old member returned after a long absence, bought a farm, built a barn, shop and new house, ponds, etc., so have been engaged in other things for my family.

[kfd518]

I know the original post in this thread states identical powders but unless I am dense there are some glaring discrepancies.
Rp15=RL22
RP15=N203b
N203b= RL15
MRP=rl22
Am I wrong or just dense?
The way I read it
RP11=N203b not RP15
Not trying to be difficult but the numbers seem not to match up when you read fully through the OP listing.

[Photog]

As Alliant American Select is not included in QuickLoad software, I found that Accurate Solo 1250 in quickload gives me the EXACT (+/- 10fps) velocity that AmSel gives me in real life (per my chronograph) and thats both pistols and carbines in 38spl. While its not the same powder, the results are the same.

[Jim22]

I find all this fascinating. I will copy the Op's list but I'll have to say all this notion of 'Same As' doesn't eliminate the need to start low and work up. I well remember a time - years ago - when I got a lot of 2400 that was way too hot. Loads I had been using before that were fine turned out to be too hot. There were sticking cases, flattened primers where there were none of those with an earlier lot of the same powder. Either the lot was off spec or the container was mis-labeled. I wrote to a prominent gun writer at the time about this. He wrote back saying it could happen but he didn't want to pursue it. This was about 40 years ago.

Jim

[poppy42]

Hp38 and win231 or the exact same powder, the come from the exact same vat. The only difference is the label on the jug and are 100% interchangeable. This is a quote from Hodgen as told to me buy a senior technician from Hodgdon.

[Bobaloo22]

Does anyone know if the Accurate TCM could be used safely for 9mm Luger 124 grn loads? Also what powder if any is it close to. Thanks

[Rockindaddy]

Wiljen: That is a nice cross reference chart you put up for some powders. I have been wondering about M1 30 caliber carbine powder. Bought 80 lbs of WW680 surplus ball powder a few years back for $3/ pound. I use 12.5 grs of it in my 22 Hornet. It produces dime size groups out of my Ruger No.1 Varmint rifle. It also works with 300 gr cast bullets @ 17.5grs in my 44 Mag. I will probably never use it up at this rate. The Speer Reloading book lists other applications for this WW680 propellant. But the McPhearson Metallic Cartridge book lists A1680 powder loads. Is WW680 and A1680 the same powder? Maybe there is a knowledgeable propellant expert somewhere that might know!

[MT Gianni]

I understand the 1680 and 680 have interchangeable start data but no idea if they are the same powder. I understand that Ramshot Silhuette is the same powder that was Winchester Action Pistol.

[hemmjo]

I am getting back into reloading after a near 50 year absence. Family and work got in the way. I used to load .221 Rem Fireball for my XP-100 bolt action pistol, and .22-250 for my rifle. Since I quit reloading, I got an 8mm Mauser from my grandpa. Now I am retired I have time to start again. I actually got a mold and have plans to start casting boolits for the Mauser. But, I don't have a place set up yet to do casting, so I bought a box already cast and lubed.

I have almost a full can of IMR3031, but it is 50 years old. Do you think it is safe to use? About a year ago I shot a groundhog with one of the cartridges I loaded 50 years ago, it worked fine. The ground hog sure did not notice any difference!!

I was also looking in my old 1970 edition of Handloaders Disest. I found that IMR 4198 had some loads for all 3 of my cartridges, so I got a pound of of that and some Trailboss.

My problem is, I have been reading, and find some places that say that Hodgdon H4198 is different than IMR4198. They go on to say that the "new" IMR4198 is different than the "old" IMR4198. Since my data is 54 years old, does it hold true for the new IMR4198 powder?

I looked at the Hodgdon web site and found this burn rate chart where #1 is the fastest and #176 is the slowest. IMR4198 is #79, H4198 is #80 so they have to be pretty close. The chart is here https://hodgdonpowderco.com/wp-conte...rt-WEBSITE.pdf

The chart I have in my old book is for Maximum loads. If I back off 10% or maybe 15% am I safe to proceed. I do not want to back off too much and leave a bullet in the barrel, that is not good either.

I welcome your thoughts.