10mm reloading dilemma

[realmswalker]

OK, I'll make this short.

I have 500 nickle once fired cases all ready to load. so I pull out my handy dandy reloading books. My speer NO13, old as dirt, and my Lyman 49th, fairly new.

I have some 180 grain HAP bullets which are jacketed HP, so I look at speer for the 2 powders I have, Unique and Blue dot.

Speer says Blue Dot 10.0 to 11.0 and Unique 7.2 to 8.0

Lyman says Blue Dot 8.1 to 10.3 and Unique 5.8 to 6.7

this is a pretty significant difference. Advice please?

Also if it matters I will be shooting these out of a Glock model 40 exclusively.

I will also be measuring every single power load on a digital scale, I'm anal like that.

Thank you.

[cvigue]

Unique will be light loads but will burn pretty clean, and IME Blue Dot in 10mm was a soot machine. I'd try some Accurate #9 maybe.

[realmswalker]

Thank you CV, but the dirtiness or lightness of the loads is not my concern here its the extreme spread between the two books. One books Max isn't even one books minimum.

Just looking for someone who may have some good loads for this bullet out of this gun with these components.

[cvigue]

I used to use 10.6 or so of BD with XTP 180s, but a lot of it has to do with the OAL of the bullet itself, and they all vary a bit. Start low and look for OP as you work up, if you can't find data specifically for your bullets. Case volume can vary some too but I never worried about it in 10mm, YMMV.

[maxx03]

Lyman load data has always been on the conservative side. Unique will work for light plinking loads, while BD will work for full power 10mm loads.
Personally I use Longshot for all my 10mm loads.
I would start with speer manual loads and work up.

[realmswalker]

Thank you CV.

But which Data should I start low with, the Speer Manual or the Lyman? The difference is pretty significant.

[cvigue]

Thank you CV.

But which Data should I start low with, the Speer Manual or the Lyman? The difference is pretty significant.

If you can't find data for your specific projectile, I'd start at the lowest number and work up.

[delta 1/7]

Lyman is a great place to start you can work your way up, Im sure if you check Alliants website the specs they give will be different too.

[stilly]

Lyman load data has always been on the conservative side. Unique will work for light plinking loads, while BD will work for full power 10mm loads.
Personally I use Longshot for all my 10mm loads.
I would start with speer manual loads and work up.

Preach it brotha!

THAT is all I EVER intend to use in 10mm... You can get some nuclear loads with it... When they hit, apparitions fly out and then get sucked back into the lead itself stealing souls on their way back and then everything goes back to normal...

Crazy.

[ptmn]

When the data is so drastically different, as in the starting charge weight on one is higher than the max load on another, you need to look at the specifics on the data.

There are a lot of loaders that believe that a 180 gr bullet is a 180gr bullet when it comes to charge weights. That is simply not true. Bullets such as the XTP have a large hollow cavity, so the bullet is longer, which means it seats deeper than a 180gr FMJ, hence there is a lot of times a difference in charge weights.

In your case, look at ALL the data in both the Lyman and the Speer manual. Take a look at the specific bullet, the brand and type of primer and the case. Speer and Lyman will have developed their loads most likely with different cases, primers and bullets.

Once you have looked at the specific data in each, compare that data to what cases, bullets and primers that you have. If I were you, and I'm not, so take it with a grain of salt, I would figure out which of the specific components that I have and if most of my components match up with Lyman, go with the Lyman data. If most of my components match of with Speer, go with the Speer data.

I have never used Unique in 10mm before, but there is plenty of data out there for it from reputable sources. I have used Blue Dot with 10mm and I have to say that it worked very well for me in my guns. I love Blue Dot in both 10mm and 9mm, even though many say that it is not suitable for 9mm.

I will definitely agree with other posters in this thread too in that Long Shot and AA9 are better in 10mm. I have loaded 10mm with both of those powders with even better results than Blue Dot. But Blue Dot is what you have and I can confirm that in my guns and my loads, Blue Dot worked very well in 10mm.

Good luck with your load development and be safe.

[DougMurray]

While it may be implied here, I don't see anyone recommending using a chrono to verify your loads. 10mm is a pretty powerful round that I am very cautious on loading. I use AA#7 and managed to push a Zero 165 gn JHP to over 1300 fps (620 ft lbs energy), which threw brass into the next state. But I worked up to that using a chrono so I knew when I was approaching the power that I selected as my objective.

If you aren't using a chrono, stay on the conservative side. Things can get nasty in a hurry.

[cvigue]

While it may be implied here, I don't see anyone recommending using a chrono to verify your loads. 10mm is a pretty powerful round that I am very cautious on loading. I use AA#7 and managed to push a Zero 165 gn JHP to over 1300 fps (620 ft lbs energy), which threw brass into the next state. But I worked up to that using a chrono so I knew when I was approaching the power that I selected as my objective.

If you aren't using a chrono, stay on the conservative side. Things can get nasty in a hurry.

The original Norma loads were within spec and were pushing a 170 @1300 and a 165 @1400, but it's not common to find full house loads in mainstream 10mm any more.

Their 200gr was running 1200fps.

I suspect a lot of 10mm (including my Glock 20) are not really set up with springs to require full house loads.

[Rotting]

In both sets of data, the COAL is the same?*

[robert101]

To my knowledge HAP is a Hornady bullet and is listed in their 7th Edition manual as 180 grain, Blue Dot 7.5 to 10.7 grains, and Unique is 5.8 to 7.1 grains. Since the bullet is specifically listed by Hornady, I would suggest that you abide by their min and max loads. Hornady lumps in the 180 grain XTP, FMJ, and HAP bullets into the same load data category.

[slayer61]

I'm liking Longshot in my 10mm as well. It's the 10mm powder I have been looking for all along.