[Papucho]

Yesterday I went to crono my first bullets from Lyman Mold 452630 200 gr. siezed at .451. It is a TC boolit, to fire in my Glock 30 with LW barrel. The bullet was seated at COL 1.235" and was averaging 840 fps. In ne shot in every magazine I shot, third or fourth bullet I was getting FTE (failure to extract), sometimes with a stovepipe and in others, the brass just stayed in the chamber, the gun didn´t cycle. What can I be doing wrong?
Please help me.

[rcmodel]

What powder & how much of it?

If the gun won't cycle or eject, I have to suspect a light charge.
But your crony results say it isn't so.

(Unless you are measuring the muzzle blast?)

Screens too close?

Then again, the Glock 30 is a mini-45, with all the attendant problems mini-45's can have.
Have you tried any 200 grain factory loads, and did it work with them?

rcmodel

[45ACPUSER]

you consider shortening the COAL?

[Papucho]

Believe it or not it is 5.0 gr. of International Clays. Due to the shortage of powder in my country, we´ve found out that it can be used reliably in handguns. Under 230 gr. FMJ we can use it from 4.8 to 5.6 gr. 5.2 gr. and 1.250 COL it shoots at 760 fps (my mayor). Very clean powder, in that sense, cleaner than Tightgroup or WW 231, the other two pistol powders available here.(was the only powder I could find when I ran out of WW231. Bus as a matter of fact, I´ll also will keep on using it, not exclusively, but I will use it.

[Papucho]

Yes. Thats the first consideration I´m having. The most I can shorten COL is about 0.15/0.20", and adjust powder measure. Do you think this might work?

[rcmodel]

I'd suggest you ditch the International Clays and try either Tightgroup or WW 231.

IC is probably not going to burn worth a hoot in your very short barrel and may give very inconstant pressure from shot to shot.

I have never used it, because I have never heard anything good about it in handgun loads.

I don't think Hodgdon even list loads for it in handguns.

rcmodel

[Steve C]

third or fourth bullet I was getting FTE (failure to extract), sometimes with a stovepipe and in others, the brass just stayed in the chamber, the gun didn´t cycle.

My guess would be a dirty chamber or very rough chamber. Most likely the case is seizing tight in the chamber on the ones where the brass stays in the chamber. This is most likely if the manual extraction is difficult. The stove pipe's are usually from slow slide speed that is likely caused by the round not easily pulling free of the chamber.

Clean the gun, esp the chamber. Use a good bore solvent and make sure everything is clean. Take it to the range and try again.

[NCsmitty]

Can you manually cycle the brass out after the FTE? How is the recoil level compared to a factory load? Do other shooters that you know have good luck with International Clays powder in the same type loads? It's slower in burnrate than titegroup but faster than WW231. It should work. Steve C may be right with the dirty chamber. Is the extractor in good shape?

NCsmitty

[Papucho]

Yes I can manually cycle the gun, in factI thought everything was going to be ok. I cycled 2 magazines without a problem.
Many of us here have used International, with good results (when it is the only thing we can grab).
The extractor is just fine (no problems with other handloads) and I cleaned the barrel just before shooting.
What I can see is that yes it is not a TC boolit. It is a semi wadcutter and when the gun is cycling to its rearward position, the spent brass somehow strikes the base of the semi wadcutter boolit that is on the magazine, thus jamming or not completing it´s backward movement.

[Sunray]

"...It is a semi wadcutter..." That'd do it. Lots of flat spots to hang things up. Try extending the feed ramp about half way up the sides of the chamber.
Hogdon gives 3.6 to 4.3 of Clays for a 200 grain LSWC with an OAL of 1.225".
Mind you, rumour has it that Glocks don't like cast bullets.

[rcmodel]

Well, O.K. then!
That explains it.

You said TC bullet in the OP, and it never crossed my mind that a wadcutter shoulder was knocking the case off the extractor hook!

That right there is your problem!

rcmodel