45 colt ruger load info

[Lloyd Smale]

I was under the impression from others on line that mp300 is the same as aa9 not 110

[BigMagShooter]

well, I await my response from Alliant.

thanks for the info guys.

[BCB]

I’ve used it with the RCBS 45-270-SAA. Twenty-two to 24 grains with velocities from 875 fps to 1148 fps. (Not sure where that data came from so be careful) I used CCI-300 primers. I did try CCI-350’s and the velocity went up 150 fps with the same powder change and the CC-300’s…

It works pretty well in the 357 Magnum with 358429’s…

I think H-110 is a better powder, but that’s just my opinion…

Good-luck…BCB

[MT Gianni]

I was under the impression from others on line that mp300 is the same as aa9 not 110

It is an animal all its own and behaves differently in the 357 and Max than AA9, 820, H110 and 296.

[BCB]

It is an animal all its own and behaves differently in the 357 and Max than AA9, 820, H110 and 296.

I agree with this...

QL does not list 300-MP, but I entered the same charge of AA#9 as I was shooting with 300-MP in the 45 Colt. QL gave a pressure of nearly 34000psi. I know I was not getting that type of pressure, or I don't think I was, as the cases literally dropped from the chambers in the cylinder...

Good-luck...BCB

[BigMagShooter]

ok here is my official response from Alliant..

Alliant has very little hard cast lead load data available. We normally refer to the Lyman Cast Bullet Handbook, 4th Edition for such load data. Looking to this handbook, there are two different configurations of 250 grain bullets. Neither of these list the use of Alliant Power Pro 300-MP propellant. This is considered to be magnum pistol propellant and the 45 Colt is not a magnum cartridge by its design. The Alliant propellants that Lyman lists in the above mentioned handbook are Red Dot, Green Dot and Unique.
The data in the above mentioned manual is copyrighted and you will need to either contact Lyman or purchase the manual.
Thanks,
Duane V.
Technical Services Rep
Alliant/Blazer/CCI/Speer

[C. Latch]

Well, that's useless.

[BigMagShooter]

yep, I sort of guessed it would be since they only have ONE load recipe for a heavy wt in the 45 colt.

[BigMagShooter]

[BigMagShooter]

found it, this is what I was reading that said they are all the same.

[C. Latch]

found it, this is what I was reading that said they are all the same.

I see that. I still don't believe it. That sort of claim needs to be backed up. I'd almost call it irresponsible to print stuff like that, without documentation.

[BigMagShooter]

somebody else's turn to query Alliant on this.

[Bzcraig]

I see that. I still don't believe it. That sort of claim needs to be backed up. I'd almost call it irresponsible to print stuff like that, without documentation.

I am in this camp as well. What publication/periodical is that from?

[BCB]

357 Magnum with the 358429…
16.0 grains 300-MP = 1154 fps
15.0 grains H-110 = 1247 fps

45 Colt with RCBS 45-270-SAA
23 grains 300-MP = 1138 fps
23 grains H-110 = 1218 fps

From that data I acquired from several loads of 300-MP and H-110, it would seem that the 300-MP is slower than H-110…

I also note that the H-110 charges may be AT OR NEAR MAXIMUM so I don’t post this data to be used. It was O.K. (?) in the Rugers I have—but that all I’m saying…

Good-luck...BCB

[BCB]

Don't know how this is going to work, but I'll give it a try...

[BCB]

Let's try it this way!!!...

If it won't expand, the dang article is in Handloader #264, February 2010...

Good-luck...BCB

[C. Latch]

Don't know how this is going to work, but I'll give it a try...

Worked perfectly and that's useful data to me. Might have to pick some up now.

[BigMagShooter]

oh yea, good things are showing up. I too can use some of that data.

thanks!

[scooterdavr56]

I've been using 22 grains of h110 and a 300 grain Lazer cast bullet in my Ruger 45 colt for years. I haven't killed anything with it yet, but it's more accurate than I am. Don't quote me,but as I remember, the max load for that bullet is 24 grains of h110 so for my purposes 22 grains works just fine.

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[DougGuy]

I've been using 22 grains of h110 and a 300 grain Lazer cast bullet in my Ruger 45 colt for years. I haven't killed anything with it yet, but it's more accurate than I am. Don't quote me,but as I remember, the max load for that bullet is 24 grains of h110 so for my purposes 22 grains works just fine.

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If you are going to post max load data on an open public forum, AT LEAST POST THE COA! COA is a CRITICAL dimension that with this much H110 could be disastrous if for instance the boolit has two crimp grooves, and load data is listed at the LONGER COA and someone just assumes it doesn't matter and seats the boolit in the deeper crimp groove, to give an example..