My 45Colt BH results...... 56K may need to get a san'ich.

[j20owner]

Yeah, I'm not 100% happy, but it might partly be me and it might partly be slightly small throats.

454424 sized .4525" lubed with Lars BAC over 20.5gr 2400 @ 25yds from sandbags:
http://xaclan.com/Heinrich/heinrich/Casting/454190%20and%20452424/Targets/10-24-09%2045colt%20454424%2020.5%20grain%202400.JPG

That's a 5 shot group because that's all I had loaded at 20.5. The top 3 were the first 3, the two with arrows were the last 2 after I realized it was printing 4" high at 25yds.

454190 sized .4525: lubed with Lars BAC over 7.0 Titegroup @25yds from sandbags:
http://xaclan.com/Heinrich/heinrich/Casting/454190%20and%20452424/Targets/10-24-09%2045colt%20454190%207.0%20grains%20Titegroup.JP G
The above load avgs around 930fps out of the 5.5" barrel my BH wears.

And to make my day, my Rem700 in .308Win came through with j-words, 168HPBT Ultramax Reman loads.
http://xaclan.com/Heinrich/heinrich/Casting/454190%20and%20452424/Targets/10-24-09%20Rem700%20308Win%20168gr%20HPBT%20Ultramax.bmp

Yes, I know the 308 target is way off to the left. I blame the crosswind and not caring as long as they were all together. Oh, and the .308 was shot at 100yds, not 25.[smilie=l:

[Potsy]

FWIW,
My deer load in my Bisley is a 454424 sized to .452, Lee NRA lube, and 21 grn. 2400, Starline Brass, CCI 300 primer.
It did tighten up a little when I heat treated the bullets. When I'm practiced up I can keep all 6 in 3-4" @ 25 yards. I'm no expert pistolero.
Throats plug out at .4515, a little small, but I've not bothered to ream them as it doesn't lead and it will still outshoot me.

[Hardcast416taylor]

Not trying to sound like a "Wise Acre" but now you can understand why a doctor refers to his office as a "PRACTICE". Keep trying different loads and sizings, you will find something your particular gun will like. What someone may suggest as a load that works in their gun, may not hit the broad side of a barn - while inside - in yours!Robert

[crabo]

I've been working with the MiHec H&G 503. Here's a link that shows what a difference some powders and different loads will do. It sometimes takes quite a bit of testing to find the groups can shrink when you give the powder a lot of testing.

http://castboolits.gunloads.com/showthread.php?t=64379

[targetshootr]

Proper throats will make a big difference and it doesn't cost much to have them opened if they are indeed too small.

[44man]

That group is common with small throats, fix the gun.