Two bullets same load one keyholes??

[wreckinball]

I have these bullets and they have the same casings, same crimp, same loads, same powder, same three guns. The wad cutter keyholes and is inaccurate even at 3 yds. The round nose will hold 1" pattern at 10 yds in all three guns. The only difference is the wad cutter is 10gr lighter.

Anyone have any suggestions??

 

[rcmodel]

Not without knowing what you are loading them with.

Power?
Weight of charge?

Then we might get somewhere on guessing a cause.

PS: You might want to resize your picture.
It's about +1/3 too big to fit on an iPad without making the text too small to see.

rc

 

[WestKentucky]

Check diameter. You may have something easy that's screwing you up like a bullet that's too small.

 

[wreckinball]

Sorry about the picture, It is from my facebook and they wont let me edit it.

5.4gr unique, The rd nose measured at 965fps, didnt chrono the SWC, I wouldn't trust them not to hit my Chrony.

The wadcutter says it is.358" by speer. Measures .3575' on my digital Caliper, the Round nose measures .357.

I have also loaded the rd nose with 4.5 grns AA Super Handicap that measure 890fps and still fly perfect.

 

[mavracer]

wadcutters soak up a lot of case capacity and don't play well with high velocity I'd imagine 5.4gr of unique has them going a lot faster than they'd like to be.
try 3.0 of bullseye

 

[WestKentucky]

Start your load work up on that wadcutters again. Mavracer makes a good point that supports the redo of the load work up. The wadcutters jammed deeply into the case makes for 2 issues, increased neck tension and reduced case capacity. Both increase pressure. You may be too hot and getting some blowby causing the erratic pattern. If so you will see massive leading issues soon. Check cases carefully for pressure signs and try that wadcutter in another lighter load.

 

[rcmodel]

What they said.

The soft swaged wad cutter is loaded WAY too hot with that charge.

If you look in your barrel, you will find it is terribly leaded from the soft bullets stripping out of the rifling at probably 1,0000+ FPS.

Speer says the Max load is 5.1 with the wad cutter.
NOT 5.4.

They also say 4.7 is max with the 158, if it's a Speer too?

Try 4.5 with the wad cutter for an accurate load.

Rc

 

[RetiredUSNChief]

Sorry about the picture, It is from my facebook and they wont let me edit it.

If you have a PC, then you at least have Microsoft Paint. While this is a very limited photo editing program, it's perfectly suitable for resizing picturs.

Save the picture on your computer. Then open the picture using Paint.

On the "Home" tab, you'll see an option that says "Resize". Click that and scale down the picture by some percentage. Then save the picture (give it a different name unless you want it to overwrite your original).

Then edit your original posting to delete the large picture and replace it with the smaller one.


OR


Save the picture on your computer. Then, click the "Edit" button for your original posting. Click the "Go Advanced" button.

Delete your original picture from your posting.

Click the down arrow on paper clip button in the top toolbar. Browse your computer to locate and upload the picture. Then close the window and click "Change Settings".

Your picture will be posted as a thumbnail in your posting. Click on the thumbnail and it will open up to full size in a separate window.

 

[ArchAngelCD]

Like said above, both your loads are too hot especially the WC load. Back off and see the accuracy improve.

 

[wreckinball]

Ok, Thanks to everyone for the advice. I will follow it. I have at least 200 rds of them left and will load them with less powder. I am out of unique, but will use my other powders and let you know how they do. I should know something in about a week. I still have 150 loaded the original. If I can I will get them on the chrony and see what they are doing as well.

Thanks,

Dave

 

[rcmodel]

Unless you are shooting them in a .357 Magnum?

You need to pull the bullets and start over again.

What you have now is WAY OVER +p+++ Pressure.

I would advise you NOT to shoot them in any .38 Special.

But even in a .357 Mag, bore leading with the wad-cutter load will cause severe bore leading!

rc

 

[wreckinball]

Two Ruger blackhawks .357 and a Taurus 608 .357. I did check out the barrels yesterday, and there are huge amounts of lead all the way down the barrels. Looks like you guy are dead on with your answers. On my way to get some lead away!! They felt like factory loads, and I normally load a little lower than standard. If I feel like hurting I will shoot my S&W 500.

This picture is after running a boresnake through a half a dozen times!!

 

[IM391]

If it is .45 cal, buy a difference gun. Most .45s don't like wad cutters. A good gun smith can polish a ramp and alter the magazine for a pistol to accept them and shoot them accurately.

 

[rcmodel]

If you read the thread before posting, you might have noticed the tread is about 148 & 158 grain .38 revolver bullets.

The problem has been addressed.
He was loading soft swaged bullets way to hot.

It had nothing to do with .45's, or buying a different gun.

He already had the same problems in three different guns!

rc

 

[fourdollarbill]

For that much lead I would wrap some O'Cedar brand copper kitchen scrubbing mesh around a bore brush and give a bunch of swipes. I say the brand name because others are not real copper.

 

[sexybeast]

Yeah, way too much pressure for the wadcutters. They like pressures under 12kpsi in my opinion. With unique 4.4 of Unique would be fine
Pull those 150 you have left or they will lead up any 38/357 again.
What powders you you have? Wadcutters like small amounts of fast powder. The advice of 3.0 of bullseye is just right. titegroup will work too.

 

[wreckinball]

Ok Guys and Gals,

I finally got back out to the range with some new loads. I used the same powder(old unique), same bullets, same gun(blackhawk 6.5), and same shooter.

I loaded 20 with 3.3 grains and 10 with 4.0 grains. The 3.3 averaged 591 fps and the 4.0 averaged 644 fps. The pictures are of their accuracy at 10 yards. My other bullets and loads are holding a pattern about half the size, so still a little disappointed with their accuracy. As you can also see there is no leading in my barrel. It is definitely a little slow, but still fun to shoot. Next time I go out, I might take it up to 4.3 and see if they start melting there. It kind of sounded and felt like a .22 with the 3.3 grains. I did run my snake through one time just to get the powder residue out, but no new lead deposits.

Dave