Magpro Powder

[Ltbullken]

Not me !! My pet load is 59.5 Grns of H 4831SC /130 Grn Ballistic tip. Works too well for many years .

Yep, same, H4831sc is my go to for a few loads. I use RL23 with a 140 NAB with great results, as well. And found IMR4831 and IMR4350 works well too with different bullets! I've got some Magpro so I'm curious to see how it works for others.

 

[ewnanney]

Used it extensively in 300 WSM, great accuracy, velocity and easy to find. Do your load development at or near High temps you will be shooting it at. It is temp sensitive so dont let your ammo sit in hot car, you may get some heavy bolt lifts

 

[Powell]

6.5WSM and 144gr Berger doing 3200fps
Had a double on pigs at 952yrds with that combo. Also, I've tested it at a 40° change and zero difference in speed, so I dont know how sensitive it is?

Any load data on that 6.5 WSM? Recently picked one of those up!

 

[308win]

Any load data on that 6.5 WSM? Recently picked one of those up!

PM me

 

[w6kennels]

I have used Magpro for years in a 7mmWSM, with excellent accuracy at maximum velocity. In the summer, I have backed the loads off some, but in the fall and winter never have had to worry about temp effects. I easily get 0.75 MOA with velocities around 3200fps with 160gr Nosler Partitions.

 

[65WSM]

I recently loaded for a fellow range club member, MagPro for his two .270 Win 24" barrels. He wanted 150 gr Ballistic Tips loaded for a lifetime tag hunt because he read an article by a hunter he reveres. We settled on an amount of MagPro that produced a velocity of 3025. He practiced this load up to 535 yards. We used Rem 9 1/2 Magnum primers. He gave me a couple of back strap pieces and some burger. The antelope head is being mounted. He was happy with the terminal performance of the Nosler bullet. He hit only one lung, because of the angle of incidence, but the expansion was impressive and the antelope bleed out in a few bounds.

I have loaded MagPro for my three .270 WSM Browning rifles. I find superior velocity with 150 gr bullets.

 

[SCVOJTA]

Beginning stages of load development in a 300WM with 185 Juggs looked really promising. However now saving the 185's for my F-Class 308 and will next try 208's and 215's in the 300 w-magnum. Will post initial results soon.
Hopes are HIGH !!

 

[Oldtime Shooter13]

When I had a 280, I tried Magpro with a 140TSX and got excellent accuracy and MV's. The load was top end at or near max, and I used a Rem 9 1/2 Magnum primer (due to powder charge and it being a ball powder) with no pressure signs. It was purely a hunting load and used in cooler fall weather, so I didn't fuss too much over temp sensitivity. Wish I kept that gun actually!!

I know how you feel about letting go of a good 280 Remington. I purchased a Remington 700 Mountain Rifle when the model was first introduced ( early mid 80's). Wish I still had that rifle, but I had a small gun shop at the time and somebody wanted it more than I wanted to keep it!

 

[Wilderness Blacktail]

i haven't tried any yet, buy hoping to get good results in many cartridges (7saum, 6.5prc, 243win, 264wm, 300wm & maybe 270win). if it's sensitive then it's not much of a problem for me as 80%+ of my shooting is between 60 and 100*. other than that those cartridges won't be used in lesser temps.

Got a good 243 load with 100gr speer v
boattails. Accurate and 3150 in this 22" barrel.

 

[Two Trax]

Recently loaded for a friend's 300 RUM, 180 Nosler Accubond. Very easy to find a load for. Used Federal 215 primers. Not a max load @ 3130 but doubt anything he shoots with it will complain.

 

[SSG Graybush]

Isn't Magpro 1.01 fps per degree, as far as temp stability. Thats not great. I always heard it was fast but was temp sensitive, so I never tried it. One here says it is, one says no, what is it?

 

[ARlife4me]

Isn't Magpro 1.01 fps per degree, as far as temp stability. Thats not great. I always heard it was fast but was temp sensitive, so I never tried it. One here says it is, one says no, what is it?

BTW, 95% OF MY LOAD DEVELOPMENTS ARE IN THE 85-95* RANGE.

sorry about the caps, cause the cats won't stay off the keyboard.

 

[Pozino33]

Recently tried some Magpro in my 7mm Rem Mag Winchester Model 70 and also in a 6.5 PRC Bergara. Yes it is temperature sensitive. But... Good results particularly with the 175 grain bullets from the 7mm Rem Mag and the 6.5 PRC loads. Who else is using Magpro and is it working out for you?

I've been forced to switch to MagPro for my 300WinMag. I used to use Reloader 26 and it was a stand alone in all categories. Once I ran out of the 3lbs I bought, could never find it again post 2020. (If I could find it, it was going for a 300% markup.) Anywho, after some research, I learned that the burn time for MagPro is very close to the Reloader 26 burn rate. So I gave it a shot. In my gun, I worked up a MagPro load and eventually got very close to the RL26 formula I used for years. The results were very, very similar between the 2 powders. All in all, I'm very happy with the MagPro performance. I think I lost 50' per second avg with very little variation shot to shot. Haven't shot the MagPro over 500yds yet but I need to. The bullet drop between the 2 powders was a half moa difference. I'm ok with this. The 300wm loaded to 77gns of MagPro, Lapua brass, Winchester WLRM primer, 178gn Hornady ELD-X @ 3,050. I am very happy with the MagPro. It has exceeded my expectations with being so comparable to RL26.

 

[338 dude]

Beginning stages of load development in a 300WM with 185 Juggs looked really promising. However now saving the 185's for my F-Class 308 and will next try 208's and 215's in the 300 w-magnum. Will post initial results soon.
Hopes are HIGH !!