Load Verification (158gr cast in 9mm)

[murf]

make a dummy round (just bullet and case). chamber the round and make sure it goes all the way in (rim hits the back of the cylinder). that round nose bullet should work fine at .361".

a 10 percent powder reduction is prudent in this case. you can always work up later.

this should cure the leading problem.

murf

 

[tyeo098]

Does not go all the way in.

It was worth a shot though. If I push it with a slight amount of force I can get it to chamber.

 

[918v]

I'm gonna down the load a bit to accommodate the increase in pressure from the larger dia bullet.

There is not going to be a noteworthy increase in pressure.

 

[murf]

does the gun shave off any lead when you push the round in the chamber? does the cylinder spin freely after you chamber the round? measure the diameter of the bullet after you push it in the cylinder. does hard chambering occur with all cylinders, or just one?

murf

 

[tyeo098]

The bullet expands the brass so much that it does not chamber. Not even a little.

Sometimes it will chamber with some force, but that depends on the size the bullet dropped at.

 

[murf]

make a dummy round with that .3595" bullet (light crimp). see if that one fits. if it does, the .359 sizer should work.

murf

 

[tyeo098]

Okay.

That works fine. I'll have to order a .359 sizer then.

One thing that bothers me is that my lee .357 sizer sizes to .358??

 

[Certaindeaf]

How was the accuracy with that .358? Tumble lube those before and then again after sizing and try them again..

 

[tyeo098]

How was the accuracy with that .358? Tumble lube those before and then again after sizing and try them again..

Accuracy was alright. Its about what factory loads gave me from my 2" snubby.

30ft, 5 shots, 4 grouped dead center at 1.25" with the 5th shot going way out in left field about 2.5" away.

Accuracy deteriorated from there, but at a much faster rate than my gun usually does from barrel heat.

Second group was 3", 3rd group was all over.

Was the leading causing this?

 

[Certaindeaf]

It may well have.. there's one way to find out.

 

[tyeo098]

More lube?

 

[Certaindeaf]

Exactly.. I think I said that like three times in this thread.. most people that tumble lube and size do it twice.. once (lightly/thin) before sizing and then again after.
I try to not size so I only have to lube once.

 

[tyeo098]

I think I said that like three times in this thread..

Said what three times?

I'll try it out and report back my findings.

 

[tyeo098]

Would gas checks help at all?

 

[Walkalong]

There is no need for gas checks in 9MM.