some ? on 44 mag, brass and gun getting really dirty after a few rounds

[mstake]

I have a taurus rb  in 44 mag and i am reloading 240 xtp with 24 grains of h110. The problem is when i shoot it become really filthy in very few rounds. the brass come out almost black not mention the pistol really filthy. Is it posible that i am not crimping the round tight enough to get the pressure up in the cases to expand?.

[myronman3]

are you using magnum primers?

[Boxhead]

First, I assume that you are using magnum primers as that is what is required when using H110. Second, I turn down the expander balls on all of my handgun dies, depending upon caliber, to .004" - .006" less than bullet diameter to ensure a firm bullet pull and lastly I do roll a very heavy crimp. These three things combined with properly sized cylinder throats (.0005" - .0010" over groove diameter) and bullets deliver all that I have needed. I generally clean my brass only after a number of firings.

[Mikey]

mstake:  Check your primers - that powder charge requires magnum primers;  check your crimp - that powder and WW296 (same powders) require a heavy crimp for complete detonation. 

Also, check your cylinder to barrel gap - should be between .003 and .006 (at least that's on S&W's) and, if you can, mic your chamber mouths - you may have some, umm, generous tolerances. 

If all is in order and even with proper primers and crimp you are still shooting dirty, consider changing powders to something faster burning.  HTH.  Mikey.

[Catfish]

As stated mag. primer help and should be used, but don`t worry about the suet, it wipes off easily and doe not effect accuracy.

[Lloyd Smale]

shoot a handgun with any load and it will get dirty. Some loads more then others but if you put 50 rounds of about any load through your gun its going to be dirty. I dont worry anymore about what powders or bullets make a gun dirty. I worry about what shoots good and if it bothers me i clean it.

[swampthing]

Are any of the bullets pulling out under recoil? shoot 5 rounds and check the 6th to see if it has pulled out past the crimp groove. I seat and crimp in 2 steps. I would crimp until the case mouth is pressed well into the cannelure if they showed sighns of pulling, or use a Redding Profile Crimp Die.
               If the above does not apply....  You are not using enough powder. H110 must not be reduced below 3% of MAX! Hogdon says this for a reason. Hornady lists 24.8g max for their single action. Considering your double action should have a larger cylinder gap, and, the fact your using a light charge, it sounds like you are not getting enough pressure from that charge to seal the chamber.     
Or basically you are not getting enough pressure to expand the case, which is nothing but a gasket, and that's why your getting blow by.
Try increasing powder charges, {in accordance with safe reloading practices}, .2g's at a time until you reach the proper charge for your combination, it should solve that problem. Stop increasing the powder charge when you see that you are not getting the same average velocity increase per .2g of powder increase, {that is the "efficiency window" any more and you just increase pressure!},  or when you see that accuracy is starting to open up. I like AA#9, it is more forgiving.
Magnum primers are a must. Are the cylinders oversize? Any more than a few thousandths over what a resized case is and they could be considered on the "loose" side.
Good luck and be safe.