Developing a more stout 10mm load for my 1006 and 610. Which should I start with?

[JKN]

I am a longtime Bullseye shooter and plinker so my load development skills are more towards the accurate and/or cheap side of things so I have minimal experience at the "Do not exceed" end of the load charts . That said, for occasional use I want to work up a safe but nearer the limit 10mm load for use in both my 1006 and 610. Is one of them known to be the more limiting of the two or do I need to include both of them as I carefully walk up the ladder? Not trying to optimize things just find a load that is safe for both but at the hotter end of the spectrum than my standard .40 minor PF loads that are so slow I can almost watch them go down range.

Thanks,

John

 

[Sevens]

Well... my thoughts are that if you want to make more power or "high end" loads in 10mm, move toward a slower burning powder. If you are comparing these to minor Pf .40cal loads, those loads are likely using Bullseye or Accurate#5 or something faster. If you want to make top-end 10mm, use Accurate #9 or 2400 or Blue Dot. I also think Longshot is a good choice. 800-X can be a velocity king but may be the worst metering powder EVER.

As for which platform is better, I would lean toward the 610. A revolver can at least give one (more reliable) pressure clue, sticky extraction. A semi-auto doesn't give many clear clues and ejection distance and attempting to read primers aren't clear clues in my opinion.

I've found that solid published data sources, especially when cross referenced for some consistency have been absolutely safe in the three decades that I've been trusting them to be safe.

Maximum published loads are not risky or unsafe, in my experience and in my opinion. They do need to be respected, and worked up toward as a goal.

If you choose to go beyond them, then things can get hinky.

 

[BLUEDOT37]

You won't be able to see them going down range

I had the auto's before the revolver so that's the direction it went for me.

Any sane & rational "maximum" loads will shoot fine in either. Start slow & work-up carefully.

In the 10mm Auto cartridge, while I've found slow powders like 2400 will group very well it's just a tad too slow for top performance in it. Tried AA#9 but it's about the same, & no "flash" either.

My top loads, in any of my 10s, (1076, 1006, 1013 or 610) for power & accuracy use Power Pistol & Blue Dot powders, 9.5/10.0grs & 11.5/12.0grs. respectively.

Wanting more though, I recent reamed my 610-3 chambers to 10mm MAG, which holds 33.1% more powder than the 10mm Auto does. Bumps you up to basically 41 MAG power.

That's one giant step for 10mm's !

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I can't control how you reload your handloads.
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[colt_saa]

If you are looking for a single loading for both firearms, then you have to develop for the auto loader. The revolver won't care how high or low performance it is, the revolver always cycles. Auto loaders are finicky

When hand loading high performance ammunition for the 10MM family of cartridges, I lean toward Power Pistol. BE-86 is a close second with the heavy projectiles.

I have also opened up my 310/610 revolvers for the 10MM Magnum cartridge. It is nice to have choices

If working up a 10MM Magnum load, I am still an H110 fan. 200 grain XTPs at ~1600FPS from the 6 1/2" 610, but this is MAX. The groups are actually tighter with the projectile moving a tad slower

 

[cadmike]

If you are looking for a single loading for both firearms, then you have to develop for the auto loader.

This is correct. Anything that works well in the auto should work in the revolver, but not vice versa, necessarily.

 

[JKN]

Thanks to all for the advice. I just got hold of some Blue Dot and will give it a go in the near future.

 

[RDub]

Hello
If you're interested in max loads check this out;

G20-SF; 180gr Where I'm at so far.. 2012 - Reloading 10mm ammo - 10mm-firearms.com

I gave the major powders a workout with a Glock 20-SF. This might give you a place to start working up loads..

 

[JKN]

RDub, thanks for the link. Lots of good info there. Must have taken forever to get all that data.

John

 

[RDub]

Welcome..
The shooting is not bad.. It's the case miking that is tedious..

 

[oysterer]

I keep mentioning this: If accuracy is still interesting, not just pure power: HS-6.

I use cci 350 primers and between 7.8 to 8.6 gr. of HS-6 in
44 spl, 41 spl and 10 mm. No unburnt powder and the power is there.

I get no similar accuracy out of any other powder primer combination in those caliber. It is a true medium burner and a mid power load and may be able to walk it up aways more if the book says so...