625 S/W Auto Rim

[coat]

How Hard do i have to have the lead mix. Everything I try i get way to much leading. I have sized .452 and .451 I have read that my boollits needs to be HARD. Can somebody HELP.

[Murphy]

Have you tried checking your cylinder throats?

Take one of your sized .451 boolits and drop it in the cylinder. Then take a pen/pencil and it should slip thru with little to no pressure. If it won't slip thru without a good deal of force? Your cylinder throats may need to be opened.

And, typically S&W revolvers built to handle the .45 ACP/AR cartridge have shallow rifling. This 'may' be something you need to take a look at as well. The harder boolit will act more like a J word and the lands will grasp it better. The lead boolit's may be skipping down the barrel instead of engaging the rifling.

You didn't mention what mix of alloy you are using. If you're using wheel weights, try water quencing them. This will give them a hardness far beyond what's needed, but might be the only solution.

Murphy

[stobey]

I load a 22-4 S&W with auto rims and have no problem with leading. I am shooting:
- 250 gr bullet sized at. 454
- 6 gr unique
- Wheel weights

Leading is usually not associated with alloy hardness. Especially at handgun velocities.
Leading is usually due to undersized bullets or lube (or lack thereof)

Steve

Sent from my SCH-I800 using Tapatalk 2

[HATCH]

I shoot straight ww lead thru both my 625s 45 acp
Never had a leading issue.


sent from my mobile

[stubshaft]

Another thing you may want to check is if the throat of the barrel is smaller than the barrel itself. It wouldn't be the first time I've seen it on a Smith, usually find it on Rugers.

[Artful]

How Hard do i have to have the lead mix. Everything I try i get way to much leading. I have sized .452 and .451 I have read that my boollits needs to be HARD. Can somebody HELP.

Have you tried water dropping them?

[Kraschenbirn]

You didn't mention what weight/design boolit you're using or how hard you're pushing it. I once had a Smith 25-2 (1955 Target Model) that was a tackdriver with jacketed stuff but leaded badly and would barely keep six shots on the paper at 25 yards when loaded with 185 or 200-gr cast SWCs...no matter what alloy or hardness. Had the cylinder throats honed so that all measured .452"-4525" and switched to a 225-gr. TC boolit (more bearing area) cast from straight WWs and sized to .452. The leading issue immediately went away and, after a bit of load (re)development CB accuracy became as good or better as with factory match ammo. Gun was my 'pet' for bowling pins and steel plates shoots for several years and I often regret trading it away.

Bill

[coat]

I Have Try Lee's 200gr RNPF, also lee's 200gr SWC With the BB cut off. It's ever like 250 SWC. I Thank My mix was my Lyman #2 I have pick up some harder Bullets from my LGS that is hard then lyman #2 it say on the box 18. Also most of the leading is a forsing cone I have .452 and 451. 452 will not slip thru But 451 will with a little pressure. Try 231,wst Unique never try w-w before I will try sofer next time i cast.

[runfiverun]

i use ar/acp cases in my 4" 625.
and load 200 swc's,225 rnfp's,230 rn.
all cast from ww's and some soft and possibly some tin.
sized to 452.
you might want to look at what your loading dies might be doing to your boolits.
iv'e loaded them over tightgroup,clay's,231,700-x, and unique so far.
and have had no issues except cleaning powder residue off the cylinders.
the 625 is the house gun and i make the wife and kids shoot it every three months [minimum]

like char-gar pointed out measure some stuff on the gun,and then look at each step in your loading process, see if it is damaging your fitted [to the gun] boolits.

[bobthenailer]

I use water dropped WW from the mould sized @.452 in mine & my BIL 625s with no problems as well as in our other 45 acp pistols with no problem !

[BLTsandwedge]

Coat, is the leading in the barrel or cylinder throats? I pin-guaged my 625 and each came out .453". Before learning that, I was getting plenty- gobs of lead in the throats with 452389s, 360s and 630s, sized at .452 and at a BhN range of 14 to 15. Velocities from Clays, 231 and AA#5 were and are between 750 and 850fps. Oddly the accuracy was still outstanding despite the amount of lead that I collected in the throats. The solution in my situation was to simply step up to .454". It may be a good idea to make sure you've got a lube suited for your applications. I've a suspicion that diameter is the issue rather than alloy hardness.

[coat]

BLTsandwedge: I'am getting it at Barrel throat. About the first 1/2 inch. Also the forcing cone .451" will slip thur with a little pressure the .452 will not slip thur at all

[runfiverun]

are coming out of the cases at 452?
using a 452 boolit and then squeezing it to 450 in the loading process defeats the whole sizing thing.

if not it could be skidding like murphy suggested in the first post.
or your lube is failing you.

[MtGun44]

Bigger and softer.

Bill