T/C Load Data for "Contender Pistol Only"

[Bruce Frank]

Hmm, I am new to this web site and seem to have posted my question where I didn't intend it to be. And I can't find it now to remove it. So forgive me for "double posting."

Has anyone worked up a load in a ten to 14" barrel with a 180 gr bullet using 296 or 110 powder?

[DM1906]

Hmm, I am new to this web site and seem to have posted my question where I didn't intend it to be. And I can't find it now to remove it. So forgive me for "double posting."

Has anyone worked up a load in a ten to 14" barrel with a 180 gr bullet using 296 or 110 powder?

Yes. W296/H110 is much too slow, and the 10mm case capacity isn't enough, with any weight bullet. Case capacity is the limiting factor, not the pistol or barrel length. Even with a 9" barrel, a maximum compressed load wouldn't cross 1000 FPS with 180 gr. cast, plated or jacketed bullets. A 6.5" barrel didn't make 900 FPS. I like the powder for a lot of cartridges, but it is just not for the 10mm.

[Bruce Frank]

Thanks! I really like the way that 296 feeds and I have settled on Power Pistol right now as it also feeds accurately. But I was hoping. 296 is my powder of choice for 357 mag,44 mag and 357 maximum, and I have a lot of it!

I have seen some data with 296 out of 6" barrels and it is clear that the powder isn't efficient in such a short barrel. Pressure is way down around 22,000. I was hoping that a longer barrel would get things up to speed and allow the powder to burn more completely. A 6" barrel has a phenomenal muzzle flash.  Appears that it just doesn't have enough capacity in the case to do the job.

[DM1906]

Thanks! I really like the way that 296 feeds and I have settled on Power Pistol right now as it also feeds accurately. But I was hoping. 296 is my powder of choice for 357 mag,44 mag and 357 maximum, and I have a lot of it!

Me too. I like 296 for a lot of my magnum, and even some rifle loads, but it just won't work for 10mm.

[The_Shadow]

Yep, agreed the 296/H110 take too much space and are too slow for the 10 and also for the 9x25Dillon.  AA#9 was about as dense a charge to yield some high numbers.  Trying to find a balance of powder charge to performance yield has been very interesting with the 10mm.  I am liking what I see with BE-86 in some loadings...

[sstewart]

296/H110 is the std. for 300blk these days. (Supersonic or sub sonic) I agree that 10mm case is too small to work


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