Discussion in 'Handloading and Reloading' started by xsoldier1911, Jun 28, 2011.
So far, I haven't heard any reports for my applications.
One problem trying a new powder is that it will take awhile for Alliant to give load guidelines for different applications. That is the case for the .45 Colt applications. Alliant doesn't realize that a lot of people shoot some really hot loads in their .45 Colts, so they don't get in a hurry to test those combinations.
If I was going to experiment with Ruger level loads in a .45 Colt using the 300MP, I would use the published data for .44 Mag as a starting point. In my past observations, putting the same amount of powder into a .45 Colt case using the same bullet weight as listed for .44 mag gave fairly similar results. Naturally you would reduce the starting weight a bit for safety but it would get you in the ballpark.
I had some great results using H-110 in super hot .45 Colt loads. When I first got my BFR in .454 Casull, I didn't have any .454 ammo and no .454 brass. But I did have a bunch of .45 Colt brass. I started out using Ruger only loads and they were fun. Eventually, I was shooting loads discussed by Linebaugh. Those were some high pressure loads no doubt. That is where H-110 really shines. It burnt very cleanly and consistently. According to Linebaugh, my loads were probably in the 45,000 psi range. Eventually, when I acquired .454 brass, I quit putting the hot loads into .45 Colt cases. It was kind of a pain to keep them separated from the normal pressure .45 Colt rounds for the regular revolvers I have.
It would be hard to go wrong using H-110 for hot loads in my opinion. Besides, for some reason, all the Alliant powders are higher priced than Hodgdon powders around here. In fact, around here you can buy W-296 is usually a dollar cheaper than the same stuff in a H-110 can. Go figure. And the W-296 can has a prettier label.
Actually what your asking for is a load that isn't approved or tested by SAMMI. Powders like H110/296 and from what I gather, 300MP are not powders that can be fiddled with outside of, especially below published data. They are intended for full house magnum loads and nothing else. Unlike mid range powders and fast burning powders H110/296 can't be manipulated below listed minimum charges shown. I would like to reiterate that, you can't down load with H110 or 296 because they will act unpredictably. I'm not experienced regarding lead bullets being used with these powders, but I would venture to guess that because those powders produce absolute magnum velocity, severe leading will be a primary issue.
I've been seeing some excellent reviews with 300MP I can tell ya that much, but I haven't had the opportunity to try it yet.
Of course I realize you would have to "burn through" a lot of powder to see any effect on your Blackhawk.
I also use CCI 300 primers and Starline brass out of a 7 1/2-inch Ruger. Now I just need to get ahold of the October issue of Handloader so I can get the charge weights.
If you have a bunch of CCI 300 primers, buy a pound of H110 and give it a go. I don't think you're going to get squibs unless you go below the min recommended load for H110 and the bullet you are using. DO NOT go below the min. That probably causes more squib loads than primers do.
I use WLP primers now.
I think in the 45 Colt at least, H110/296 is still king.
I use those two exclusively for my magnum wheel guns.
I have the October 2011 issue and there are no .45 Colt loads listed, only .327, .357, .41, and .44 Magnums and .454 Casull.
Pearce has some more .45 Colt/300-MP loads published in Handloader 277 (April 2012).
Still no explanation of his hatchet job on previous incarnation of Marlin and unwarranted gushing praise on later day Marlin... you know, the later one that had to shutdown production due to QC issues
Evidently his Editor is still waiting for him to reply to snail mail as he claimed writer to have no email/texting capability... yeah right. (this is conjecture on my part, part of me thinks its been swept under office rug already, never to be seen again)
Rifle/Handloader ain't what they used to be...
Luck w/ loads!
I don't have a chronograph, but the loads were accurate and clean. Shot much better than H110 or Lil Gun loads with the same bullet weights.
If you give it a try, please let us know how it performed for you. I've been thinnking about grabbing some myself to try in the .357's and 44 mag..
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