MG 147 CMJ w/ Solo 1000

[G-ManBart]

I finally got around to ordering some MG 147gr CMJ's to load for my M&P Pro and they showed up on Monday (ordered late on Thurs!). The load was 3.85gr of Solo 1000 at 1.125" OAL, Win SP primer, and Starline once-fired 9mm cases. Conditions were 18*F, gusty with mostly overcast....needless to say I didn't waste time at that temp!

The average was 909fps, 133PF, with an ES of 45.18 and an SD of 14.24fps.

I'll point out that I loaded these on a turret press and used an old Lee powder measure just clamped to the bench for charging them. That measure setup isn't going to give very consistent throws so I was happy with the SD. I'm going to set up my Redding measure (it's still in a box from the move) and load up some more to test and see if the SD drops, but it's still not a bad number. I don't have a press set up exclusively for 9mm right now, so loading this way is fine for development work.

Next I'm going to load some of the PD 147s and I also have Zero 147 CMJ and 135 FMJs on the way as well....more projects for over the winter.

[8ring]

G-Man.

Thanks for the load information.

Were your loads near "room temperature" when you tested them or had they cooled down while you set up your chrono?

I'm interested to see if Solo 1000 is temp sensitive.

Chris

[G-ManBart]

G-Man.

Thanks for the load information.

Were your loads near "room temperature" when you tested them or had they cooled down while you set up your chrono?

I'm interested to see if Solo 1000 is temp sensitive.

Chris

They were probably somewhere in between, but on the cold side. They'd been in my car for at least an hour or two before I grabbed them, went inside, loaded the mags, set up the chrono and ran out to shoot them. So, they may have heated up from ambient to something like 25-30*, but I'd bet not more than that.

Solo 1000 is definitely reverse temperature sensitive, which is part of why I wanted to test them in seriously cold conditions. I hope to run a few more test similar to this as the weather changes, and hopefully, develp some sort of rough guide for how much velocity I'll lose as the temps go up. R,

Edit to add: Just to be a little more specific, I was at the range instructing, so my car was parked for quite some time (that hour or two) by the time I pulled the ammo and chrono out. The ammo was only inside the building for maybe 5 min before I went out to shoot them over the chrono. I can't imagine that would have let them heat up too much. Next time I'll make sure they're at ambient temp for a while before I shoot them, just to be certain.

Edited December 12, 2009 by G-ManBart

[MemphisMechanic]

From here:

http://www.brianenos.com/forums/index.php?...amp;qpid=966545

It was 86-89 degrees here today. I left a mag full of 5 rounds on my dash with the windows up so that it was over 95 degrees, and packed a lunch in a cooler with a LOT of ice in it. Double-bagged a mag with 10 more rounds, and it went into the cooler at the bottom of the ice. Loaded and fired both as soon as possible upon removal.

Glock 34, stock barrel, 50kish rounds through it.

147 Black Bullets moly

1.130" OAL

3.32gr Solo1000

Wolf SP primers

Hot loads, left on a 95 degree dashboard

861

856

874

858

855

-----------

860.8 fps Average Velocity

126.53 PF

Cold loads, double-bagged in cooler w/ ice

860

881

894

878

900

885

897

871

886

-----------

883.5 fps Average Velocity

129.9 PF

I had already decided to bump my load to a bit over 3.45 to stay a bit higher off the power floor, but 126.5 definitely convinced me. I'm going to be shooting a lot of IDPA matches in 90+ degree heat this year.

(I come with numbers in the hundreths - like 3.32gr or 3.45gr - because I drop 10 cases worth of powder onto the scale, and take an average. 33.22 was the actual weights of ten cases worth of powder).

Either that, or store my mags in the cooler when I'm getting near the chrono stage.

[MemphisMechanic]

Oh, and this is one of my favorite things about Solo. It's hot around here a lot more of the year than it's freezing cold, plus, that's match season. With Solo, if you make PF comfortably on a really hot day, you don't have to worry about the cold ones. It speeds up.

[Sarge]

When you get to the PD 147's I'd be curious to see what you come up with. I got 136pf out of my PRO with 3.6 solo1000 at OAL of 1.11 @70 degrees.

PS Gman, much over 1.11 catches the rifling in my gun. 1.12 was too long for me. I learned that the hard way. Just FYI.

[G-ManBart]

When you get to the PD 147's I'd be curious to see what you come up with. I got 136pf out of my PRO with 3.6 solo1000 at OAL of 1.11 @70 degrees.

PS Gman, much over 1.11 catches the rifling in my gun. 1.12 was too long for me. I learned that the hard way. Just FYI.

I'm going to load some of the PDs right away, but it might take a while before I can chrono them. I'll double check on the OAL, but the MG's at 1.125" seemed to drop right in my gun (stole that OAL from Dan Burwell). I'll make sure the PD's aren't different from the MG's in that regard. R,

[G-ManBart]

From here:

http://www.brianenos.com/forums/index.php?...amp;qpid=966545

Yeah, I read that thread and it definitely helped. Since Glock barrels tend to run faster I thought it would be a good idea to do an M&P thread since lots of folks are using them now. I've been happy to get within two or 3 PF of what AA&A expects from their ammo in a G34, so I know mine is a touch slower, but not ridiculously so. R,

[Sarge]

When you get to the PD 147's I'd be curious to see what you come up with. I got 136pf out of my PRO with 3.6 solo1000 at OAL of 1.11 @70 degrees.

PS Gman, much over 1.11 catches the rifling in my gun. 1.12 was too long for me. I learned that the hard way. Just FYI.

I'm going to load some of the PDs right away, but it might take a while before I can chrono them. I'll double check on the OAL, but the MG's at 1.125" seemed to drop right in my gun (stole that OAL from Dan Burwell). I'll make sure the PD's aren't different from the MG's in that regard. R,

The PD 147 FP's failed me where the MG 147 CMJ's were fine so there is just enough difference to cause headaches.