I was able to get my hands on some Alliant Power Pro 300 MP (+1 to Advanced Weapon Systems of BR). There is some load data on the Alliant website and I've searched through this forum and other online sources. There is some load data for the .44 mag pistol with 300 MP in the Hornady manual. Does anyone have some loading info sources (specifically velocity numbers) on using this powder out of a rifle (22" barrel)? I have an idea of what loads I'm going to make up for my next trial, but the data is all for 7-1/2" barrels. (Yea, I know that I need to get a chrono to be sure). Tks in advance.
Alliant Power Pro 300 MP with .44 Mag
- Thread starter Geauxfish
- Start date
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Finally had a chance to test out some 44 mag reloads using the Alliant 300 MP. I loaded up three different loads between 23 and 25 grains under a 240gr XTP. Velocity, per the book, should be between 1400 and 1600 fps for these loads.
I'm very pleased with the middle load grouping. I'm going to load up another 50 or so rounds and dial in the scope before hunting season.
I'm very pleased with the middle load grouping. I'm going to load up another 50 or so rounds and dial in the scope before hunting season.
Danny Abear
Well-Known Member
2400 or 296/H110 is hard to beat in A 44, BUT i'VE BEEN WANTING TO RTY SOME 300mP IN MINE AND ALSO FOR 410. You do realize that only 10 grains of Unique under a 240 gr keith style/swc will kill anything you will run across in this neck of the woods?
I do load the 10 gr Unique with 240 gr keith for my revolver. I was looking for something with a little more "umph" to shoot through the rifle during primative arms season. I like the results at 100 yrds, just need to dial in the scope.
http://ballisticsbytheinch.com/44mag.html
I like to go here for a basic comparison from pistol to rifle length bbls. It wont have your exact load but if the velocities and bulket weight are similar then you an expect similar results in your long bbl. This is far from exact but its all academic til you pull the trigger.
I like to go here for a basic comparison from pistol to rifle length bbls. It wont have your exact load but if the velocities and bulket weight are similar then you an expect similar results in your long bbl. This is far from exact but its all academic til you pull the trigger.
Thanks for the website. That corresponds to what I was told by Hornady...for pistol calibers in a pistol, it's about 30 fps/in of barrel. I assumed that the full benefit wouldn't be there for pistol calibers in rifles since the speed of powder burn comes in to play. I was assuming about 300 fps gain from a 7-1/2" to 18" barrel.
Data below is what I got from Ben @ Alliant for cast bullets...
44 Rem Mag
250 gr Cast Lead
300MP powder start 23 grs max 24 grs
300 gr Cast Lead
300MP powder start 18.5 grs max 19.5 grs
357 mag
180 gr Cast Lead
300MP powder start 12 grs max 14 grs
A firm crimp on the bullet is recommend.
I've shot 23 grains of 300 MP with a 250 gr. Beartooth cast so far..pretty stout in my 10" Contender.
I have not run any through my chrony yet...but plan to using 300 MP, H110, and W296 to compare velocities...
Bulldog...
44 Rem Mag
250 gr Cast Lead
300MP powder start 23 grs max 24 grs
300 gr Cast Lead
300MP powder start 18.5 grs max 19.5 grs
357 mag
180 gr Cast Lead
300MP powder start 12 grs max 14 grs
A firm crimp on the bullet is recommend.
I've shot 23 grains of 300 MP with a 250 gr. Beartooth cast so far..pretty stout in my 10" Contender.
I have not run any through my chrony yet...but plan to using 300 MP, H110, and W296 to compare velocities...
Bulldog...
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I was surprised how flat shooting the .454 was in a rifle. 3-400 fps makes a notable difference from one gun to the other. I went from a 6" to a 16" bbl and shot over a deer at ~100 yards holding an inch or 2 over the line of the back. Up to that range point of aim and point of impact were the same.
Please post the results. I'm very interested in how the 300MP compares to the other two (arent' they essentially the same?). I was looking for H110 since I saw so many positives with it in the 44 mag. For now though, the 300MP i have will hold me over for a while.
Danny Abear
Well-Known Member
H110 and Win 296 is the exact same, it's my understanding that 300MP creates the same velocity with less pressure than H110/296
I'm pleased with the results. There was a stiff wind in Friday from left to right. I think that the relatively slow bullet (240 gr XTP on the left) was more impacted by it than the .308 (on the right). The 44 mag was the same CVA scout shot at 100 yards. Don't think I'll be able to blame the rifle if I miss this year.
To all Interested:
H-110 1,567 fps
W-296 1,524 fps
300 MP 1,450 fps
T/C Contender, factory 10" barrel, Leupold 2x scope and mounts.
44 Mag., 250 LBT (0.432), Cast, Gas Checked Bullet (Beartooth Bullets)
23 grs. each powder (min. load of 300 MP, per Alliant email with this bullet)
Win Brass (3 times fired), Tula LP Primers
Temp: 80 Deg.
Conclusion:
I was surprised that 300 MP was that much slower. The H110 vs W296 can swap back and forth on top ends loads,
as per load data in several manuals I have...one lot can be faster than the other, so no big surprise there.
Recoil was stiff on all, but the H110 was tops in that department also...wrist is still sore.
All grouped well @ 25 yds., but I was not focused on shooting tight groups.
H110 is still top powder for speed, which I have used a lot in my 44 mag. and 357 mag.
All three powders looked the same out of the bottles, if you poured three piles on the loading bench, you could not tell them apart.
I will re-test this again, probably with a different bullet. Tula primers seemed to be Magnum (per load work I done before before),
loading manuals recommend magnum primers using H110/W296.
H-110 1,567 fps
W-296 1,524 fps
300 MP 1,450 fps
T/C Contender, factory 10" barrel, Leupold 2x scope and mounts.
44 Mag., 250 LBT (0.432), Cast, Gas Checked Bullet (Beartooth Bullets)
23 grs. each powder (min. load of 300 MP, per Alliant email with this bullet)
Win Brass (3 times fired), Tula LP Primers
Temp: 80 Deg.
Conclusion:
I was surprised that 300 MP was that much slower. The H110 vs W296 can swap back and forth on top ends loads,
as per load data in several manuals I have...one lot can be faster than the other, so no big surprise there.
Recoil was stiff on all, but the H110 was tops in that department also...wrist is still sore.
All grouped well @ 25 yds., but I was not focused on shooting tight groups.
H110 is still top powder for speed, which I have used a lot in my 44 mag. and 357 mag.
All three powders looked the same out of the bottles, if you poured three piles on the loading bench, you could not tell them apart.
I will re-test this again, probably with a different bullet. Tula primers seemed to be Magnum (per load work I done before before),
loading manuals recommend magnum primers using H110/W296.
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Thanks for the info Bulldog. I'll be very curious if you get the same results next time out. I shot a doe this weekend at just over a 100 yards. Bullet hit where i wanted but did not seem to go through (240gr XTP with 24 gr 300MP). I ended up losing the trail and the deer.
Danny Abear
Well-Known Member
If you were using a Hornady pistol bullet, it did what it is supposed to do. They are designed to expand at pistol velocities. A hard cast wide meplat lead bullet would have punched a 1/2" hole clean thru and left a good blood trail,if not breaking bone and disableing or killing the deer outright.
Bulldog - 296 and H110 is the same exact powder as per Win web site. Have been so for several years.
Bulldog - 296 and H110 is the same exact powder as per Win web site. Have been so for several years.
I understand. I know of first hand accounts of using an 240 gr XTP for hunting going through. But, I agree totally with you that the hard cast would have punched clean through. I think a combination of bullet placement and lack of energy at target contributed to losing it. Lesson learned.
I just joined the forum to reply to this post because I have been pursuing hot loads for deer with my .44mag's for years.
I have three .44Mag's; a Ruger Super Redhawk 9.5", a 1894 20" bbl .44mag SS, and a Ruger 44/77 that my daughter shoots.
300MP can be pushed to higher velocity in rifles than you can imagine...in revolvers I would stick to 296/110 as the velocity/pressure is perfect.
In reality as has been proven to date, 300MP is a tad slower than 296/110.
Work up your own load.
I can tell you that a rough observance is that 1 grain more of 300MP will get you to the same velocity in a 20" barrel rifle as 296/110.
I can tell you that I am safely (0 pressure signs from my brass and gun combination) pushing a 240grain Hornady XTP at 1,950fps with standard primers. This group shoots about 1.5" at 100 yards. (Now I also have a 3-9x VX-2 Leupold on my 1894ss, that helps too).
I believe there is room to take it to 2,000fps out of the marlin...but its quite enough as it is and the accuracy is good so I am going to choose not to go further.
At this velocity I get 2 reloads though from the brass before they go in the "target brass" bucket as they require ALOT of resizing power.
Here is some HOT data:
http://www.realguns.com/loads/44remmagrifle.htm
RockedEm
I have three .44Mag's; a Ruger Super Redhawk 9.5", a 1894 20" bbl .44mag SS, and a Ruger 44/77 that my daughter shoots.
300MP can be pushed to higher velocity in rifles than you can imagine...in revolvers I would stick to 296/110 as the velocity/pressure is perfect.
In reality as has been proven to date, 300MP is a tad slower than 296/110.
Work up your own load.
I can tell you that a rough observance is that 1 grain more of 300MP will get you to the same velocity in a 20" barrel rifle as 296/110.
I can tell you that I am safely (0 pressure signs from my brass and gun combination) pushing a 240grain Hornady XTP at 1,950fps with standard primers. This group shoots about 1.5" at 100 yards. (Now I also have a 3-9x VX-2 Leupold on my 1894ss, that helps too).
I believe there is room to take it to 2,000fps out of the marlin...but its quite enough as it is and the accuracy is good so I am going to choose not to go further.
At this velocity I get 2 reloads though from the brass before they go in the "target brass" bucket as they require ALOT of resizing power.
Here is some HOT data:
http://www.realguns.com/loads/44remmagrifle.htm
RockedEm
