Most accurate power for .41 mag with 210 gr bullet?

[coop2564]

I've been using H110 20.5gr with a 210gr rem SP bullet using a lee factory crimp at med level.  Overall my accuracy has been OK most times I shoot about 3 to 4" groups at 50yds.  A friend gave me some 210gr fusions and I shot them sat at range and wow I could not make them hit outside 2" at 50yds. So now I'm questioning my hand load accuracy and this was the most accurate load using H110. I've also noticed when the temp changes a lot it seems to change my impact group several inches. Whats your thoughts on the overall accuracy of H110 compared to some other powders for this round, most books show H110 for best velocity wouldn't mind giving up some speed for accuracy! I do have a 2x weaver scope on the gun which is a RB 6.5" barrel. What do you recommend? Thanks

[stimpylu32]

coop

If you can lay your hands on some IMR4227 or H4227 give that a try , I use it for a mid-range load in my 41GNR and it does very well , LilGun and Titegroup are said to work well also but I have not used them in my gun .

stimpy

[Luckyducker]

I have shot the exact same load you listed with the H110 powder and Rem 210 JSP and cloverleafed 4 shot at 50Yds with my 6.5" Blackhawk shooting off a bench.  I can always shoot into 2" with this load.  My guess is either you were having a good day at the range shooting the Fusions or the recoil with the handloads is more and causing a flinch.  Have you let some other experienced handgun shooter try the handloads in your Taurus to see how they can shoot them?  I really find it hard to believe this combo won't do better than 4".

[Luckyducker]

Just had another thought on this.  Have you ever done any measuring of the throats and/or barrel on your revolver?   If the throats are tight with the .410 bullets that might explain poor accuracy with the Rems, but I have no idea what bullet is in the Fusion or what the actual diameter is.   For correct throat diameter for the bullets being used the projectile should all but fall through the chamber throats and then with a very small push exit the chamber. 

[Sweetwater]

Another 2 cents worth-
You might try those same loads without using the Lee Factory Crimp Die - I've been having some issues with mine and have almost concluded that it is better to crimp with the seating die. Appears my Lee Factory Crimp Die, by virtue of its design and purpose, could be reducing the grip of the case neck with the bullet and causing inconsistent ignition, which will result in a velocity spread that will translate into a larger group. I've run some more test loads but have not had time to 'run to the range' yet.

Regards,
Sweetwater

[warrior1]

+1 stimpylu32  on imr 4227. i love 296 under a 210 xtp, but imr 4227 definitely got my attention.
i mostly use winchester large pistol primers. dan

[gypsyman]

You might try a different primer. I've seen where that made quite a difference in accuracy. I'm assuming you are using Lg. pistol mag. primers. If your using CCI, try a Winchester or Remington mag primer.  gypsyman

[rimfire]

I will add this to the comments on the LFCD.  I had issues with bullet tension a few years ago on a 44 with this die.  I spoke to the factory and was told that if you overcrimp with the factory crimp die it actually reduces the neck tension.  I backed off to just under one turn of the adjustment after contact...my bullet pull and accururacy increased and SD dropped.  I was definitely overcrimping and causing erratic results and my bullets were creeping forward under recoil from prior rounds.

Honestly I prefer the Redding profile crimp die now for other reasons, but once I learned above the LFCD gave me great results in both the 44 and 41 for several years.

The only jacketed 200-210 grain bullet in my 41s that did not shoot extremely well with 21 grains of 296/H110 was the Speer half jacket.  That bullet was horrible [9+ inch groups at 50 yards...seriously!] in my Contender 11" 41 with this load...I think it was too fast and was skipping the rifling and not getting a good start.  This bullet is not very tough in the jacket area.

[Sweetwater]

Rimfire-
Thanks for the comeback on the LFCD.  The theory was that the LFCD would reduce the size of the bullet inside the neck, with its carbide sizer built in, and therefore reduce neck tension as well as create an undersized bullet for the required application. Will give this a shot.

Regards,
Sweetwater

[coop2564]

Thanks for all the advise.  I'll give some of it a try. I only shot 2 6 shot groups with the fusions maybe I just got lucky, once in a while I can put 6 hand loads inside 2"s but most times its closer to 4". 1st thing I'll try is not using the lee factory crimp. When I was working up the load to start with I tried rem LP, Win LP and cci mag primers. I really didn't see a difference in group with any, so I settled on the CCI mag I don't think the throat size is a problem the reason I went with the rem sp is  I  bought a box of the factory rounds and they shot the best of all rounds I had bought factory wise mostly around 2.5" I just never have been able to get my HL's  to be that consistent. Seems at least one or two fliers per six shots where most of time when I use a factory load its more consistent.

[rimfire]

Don't get me wrong...I did not say you cannot get a very good crimp with the LFCD...just that exceeding the recommended max crimp in the instructions is a very bad idea as it goes to far. 

the only reason I favor the Redding profile crimp die is that i got just as good of SD and accuracy with my handloads using that die without as much working of the case mouth.

[gl411]

I have gotten it seems better results with 296-- I use 22 g and most any 210-225 and it does well -- AA#9 has also done well -- and has 800x  my fav is AA#9 or 296 --then 800x-- I am still using the same RCBS dies-- if you want good bulet grip with over crimp and you think yo needit -- reduce your inside expander by a few thousands -- so the case grips the bullet harder