40 s&w

[Joshua t may]

Hello need some Input. I just started to load 40 s&w im using 175 gn cast lead .401 Lee mold . Having problems with the rounds not fitting in the chamber. They go In about halfway . Checked brass for bulging in my case gauge there fit perfectly. OAL is in spec . Seems like there jamming at the nose of the round. And iam not crimping. Any input will be appreciated thanks

 

[Blue68f100]

At the very least you have to remove any flaring you did to seat the bullet. Taper crimp


Mark up the brass and bullet with a maker and see where it rubs off when you try to chamber it.

 

[Walkalong]

Checked brass for bulging in my case gauge there fit perfectly. OAL is in spec

Hmm, fit the gauge, but not the barrel, OAL may be in SAMMI spec, but too long for your barrel chamber/throat/leade.

Try "The Plunk Test" with your rounds.
.

 

[sparkyv]

This or a cartridge gauge:

Try "The Plunk Test" with your rounds.

 

[Walkalong]

Checked brass for bulging in my case gauge there fit perfectly.

Says it fits the gauge.

 

[Joshua t may]

At the very least you have to remove any flaring you did to seat the bullet. Taper crimp


Mark up the brass and bullet with a maker and see where it rubs off when you try to chamber it.

yes

Hmm, fit the gauge, but not the barrel, OAL may be in SAMMI spec, but too long for your barrel chamber/throat/leade.

Try "The Plunk Test" with your rounds.
.

Says it fits the gauge.

Yes the brass fits the gauge and barrel, but after I load the the bullet it doesn't fit

 

[Joshua t may]

yes


Yes the brass fits the gauge and barrel, but after I load the the bullet it doesn't fit

Lymen and Lee book call for 1.135 AOL I dropped the AOL to 1.110 and seems to fit better but still not right

 

[BC17A]

Lymen and Lee book call for 1.135 AOL I dropped the AOL to 1.110 and seems to fit better but still not right

Are you loading the 175SWC or the 175TC? I cast the 175TC and seat them to 1.100".

 

[sequins]

I think no crimp at all may be the issue. I can't chamber semiautomatic rounds I don't crimp either, or have to help the slide force the round to chamber and go into complete battery.

When you say it goes "halfway" shat do you mean exactly? Do loaded rounds pass the gauge? And do loaded rounds pass the plunk test or fail to even enter the barrel?

 

[Patocazador]

The ogive of your bullet may not taper enough for your chamber. Try a different bullet.

 

[gunlaw]

Not sure what bullet shape you are using but sounds like a swc. They can be a problem in some pistols.
If these are swc try seating the bullet so the front driving band is flush with the case mouth. I like swc for revolvers but avoid them for semi autos.

 

[Walkalong]

but after I load the the bullet it doesn't fit

Did you try the plunk test?

https://www.thehighroad.org/index.p...rel-find-a-max-o-a-l-with-your-bullet.506678/
.

 

[Walkalong]

And iam not crimping.

You need enough to remove the belling/flre you used to help seat the bullet. Just straighten it out, maybe a hair more (.001)

 

[Bristol Mt.Man]

Hi. I load 175 gr. LSWC from my Lee and Lyman 401. molds. In my two Sigs I never have a problem, they digest anything and everything I feed them. On the other hand, I own two Kahrs. A PM 40 and a KH 40 and they do not like lead bullets. I have more or less given up on cast bullets and run only jacketed bullets in them.

 

[GooseGestapo]

Several things jump out at me.
You need to size the bullets if for no other reason than uniformity. I use a Lee .401” push through sizer.
Secondly, you need to crimp, to eliminate the flare from expanding the case neck to allow seating of the bullet without shaving the bullet. You are flaring, aren’t you? !!!

The SWC bullet needs to be seated slightly deeper due to possible impingement on the throat of the chamber.

A “gauge” is not YOUR BARREL. Many barrels are cut undersized (and oversized, ie: Glocks), so you may need to do something different.

I recently replaced my 24yr old Glock barrel in my M22 with a CHEAP Bear Creek Arsenal barrel.
I’M ASTONISHED at the improvement in accuracy! I’m getting sub 2” groups at 25yds where I previously got 5-6” groups with factory barrel. (Match grade jacketed ammo...).
New barrel cost me $43.00 delivered. Drop in fit, though it’s nice and snug...

 

[Joshua t may]

Several things jump out at me.
You need to size the bullets if for no other reason than uniformity. I use a Lee .401” push through sizer.
Secondly, you need to crimp, to eliminate the flare from expanding the case neck to allow seating of the bullet without shaving the bullet. You are flaring, aren’t you? !!!

The SWC bullet needs to be seated slightly deeper due to possible impingement on the throat of the chamber.

A “gauge” is not YOUR BARREL. Many barrels are cut undersized (and oversized, ie: Glocks), so you may need to do something different.

I recently replaced my 24yr old Glock barrel in my M22 with a CHEAP Bear Creek Arsenal barrel.
I’M ASTONISHED at the improvement in accuracy! I’m getting sub 2” groups at 25yds where I previously got 5-6” groups with factory barrel. (Match grade jacketed ammo...).
New barrel cost me $43.00 delivered. Drop in fit, though it’s nice and snug...

Thanks, I do size with the Lee .401 and I tryed seating to 1.105 and still won't set in enough and I'm checking with my barrel. I'm going to order a Crim die and see what happens. Was going to do so anyway . Thanks

 

[Joshua t may]

You need enough to remove the belling/flre you used to help seat the bullet. Just straighten it out, maybe a hair more (.001)
View attachment 923051

Cool will try thanks

 

[FROGO207]

My rule of thumb is to have a thumbnails width of lead above the case neck with a LSWC bullet used in a semiauto. An old timer told me this decades ago and it has proved to be true pretty much universally. Then once things fit and feed I'll work up my load. Final step is to play with OAL a wee bit to fine tune accuracy.

 

[GW Staar]

I recently replaced my 24yr old Glock barrel in my M22 with a CHEAP Bear Creek Arsenal barrel.
I’M ASTONISHED at the improvement in accuracy! I’m getting sub 2” groups at 25yds where I previously got 5-6” groups with factory barrel. (Match grade jacketed ammo...).
New barrel cost me $43.00 delivered. Drop in fit, though it’s nice and snug...

Example of Glock Perfection? Was it always that accurate or just worn out with lots of practice? $43 is more than reasonable!

 

[sparkyv]

I understood the case gauged. I suggested a cartridge gauge. Something could go amiss during the loading process.

Says it fits the gauge.