I reloaded my second batch of 9mm i'm using 124gn cam pro bullets with 5.1gn of hs-6. the data i got out of the hornady book. i think i'm reloading them with to heavy of a crimp, they don't eject the round when i fire the pistol (glock 17). by what i mean doesn't eject the round it will not blow back after firing, i thought that the the loads must have been to low, so i pulled 50 rounds out of the batch of 800 to check the load weights and it was all correct
reloading 9mm having issues
- Thread starter Northern_guy111
- Start date
waynewjw
CGN Regular
I had a similar issue. Couldn't get the crimp just right so now when I reload I use the barrel when I'm adjusting the crimp. If the fall into the barrel and fall out, good to go. If this cartridge doesn't come out, over crimping. Use the barrel as you guage.
The Hornady manual data you used is for jacketed bullets, your Can Pro bullets are copper plated lead and why the Hodgdon's data varies. The 124 grain Hodgdon's data is for Berry's plated bullets and closer to your needs.
Second, your using a taper crimp which should only be .001 smaller in diameter than the outside of the case with the bullet seated. Meaning the taper crimp only "slightly" streamlines the case mouth and the entire area of the case surrounding the bullet "grips the bullet.
Third, HS-6 is a double base ball powder and requires a magnum primer, double base powders use more deterrent coatings and require a hotter primer to light the powder efficiently.
WARNING, if you over taper crimp a plated bullet you can break through the plating and cause leading and accuracy problems from a damage plated bullet. Even on my light and medium loads in my .44 magnum just get a very light taper crimp.
As you can see below the taper crimp just closes the mouth of the case "slightly" to prevent the case mouth from hanging up during feeding and again the crimp should only be .001 smaller than the diameter of the case.
Below is the practice load I use a taper crimp on in my .44 magnum with a five inch barrel, as you can see at the dotted purple line all the powder is burnt at 4.2 inches and a heavy roll crimp is not needed.
Below is a very good link for determining your maximum over all length for any semi-auto pistol.
Read wobbly's postings and study the drawings.
http://www.czfirearms.us/index.php?topic=34225.0
Second, your using a taper crimp which should only be .001 smaller in diameter than the outside of the case with the bullet seated. Meaning the taper crimp only "slightly" streamlines the case mouth and the entire area of the case surrounding the bullet "grips the bullet.
Third, HS-6 is a double base ball powder and requires a magnum primer, double base powders use more deterrent coatings and require a hotter primer to light the powder efficiently.
WARNING, if you over taper crimp a plated bullet you can break through the plating and cause leading and accuracy problems from a damage plated bullet. Even on my light and medium loads in my .44 magnum just get a very light taper crimp.
As you can see below the taper crimp just closes the mouth of the case "slightly" to prevent the case mouth from hanging up during feeding and again the crimp should only be .001 smaller than the diameter of the case.
Below is the practice load I use a taper crimp on in my .44 magnum with a five inch barrel, as you can see at the dotted purple line all the powder is burnt at 4.2 inches and a heavy roll crimp is not needed.
Below is a very good link for determining your maximum over all length for any semi-auto pistol.
Read wobbly's postings and study the drawings.
http://www.czfirearms.us/index.php?topic=34225.0
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Crimping is probably one of the areas new and not so new reloaders mess up the most.
Case wall tension alone should be enough to keep the bullet from setting back during feeding.
Dillon reloading dies tend to deliberately over size the case walls so that there is a slight recess below the bullet that would also resist bullet set back.
The crimp only needs to return the case mouth to flush with the bullet.
There are always slight variations in the length of fired mixed brass, and crimping relies on case length for consistency.
Over crimping can create problems for the user.
Over crimping can crack or weaken the plating on plated bullets, ruining accuracy.
It can also result in a swelling of the case behind the crimp that can cause feeding problems.
My method for determining the proper crimp is to measure the bullets, add twice the thickness of the case wall at the mouth, then deduct .0005.
.356 + 2(.012) - .0005 = 0.3795
Case wall tension alone should be enough to keep the bullet from setting back during feeding.
Dillon reloading dies tend to deliberately over size the case walls so that there is a slight recess below the bullet that would also resist bullet set back.
The crimp only needs to return the case mouth to flush with the bullet.
There are always slight variations in the length of fired mixed brass, and crimping relies on case length for consistency.
Over crimping can create problems for the user.
Over crimping can crack or weaken the plating on plated bullets, ruining accuracy.
It can also result in a swelling of the case behind the crimp that can cause feeding problems.
My method for determining the proper crimp is to measure the bullets, add twice the thickness of the case wall at the mouth, then deduct .0005.
.356 + 2(.012) - .0005 = 0.3795
- Location
- West Quebec
tagged
So I pulled most of the bullets found that I set the dies up for found Remington soft point bullets. I never thought to rest the crimp for cooper plated bullets. So it crimped to much into the bullet. I bullet about 200 and reloaded them using same data I had the first time. I reduced the crimped and worked out great
carsmovies
CGN frequent flyer
- Location
- Mississauga, Ontario
Another suggestion is not to load more than 100 rounds before you know your set up is good.
I do up about 20-50rnds if I'm trying out new loads. 100 is still way too much to pull if they don't work.
CreamySmooth
CGN frequent flyer
Yup. This is very good advice... Couldn't find much for powder (usually use 3N37) so I bought Clays. Used a midrange load thinking that would be safe and ran that progressive until I had 1000 rounds. Doesn't cycle the slid.
Haven't started pulling yet as it's just too disheartening....
CreamySmooth
CGN frequent flyer
Yup. Did it as I needed the ammo fast for a planned family shoot.... Completely against all my normal practices of testing and checking. Picked a middle of the line load, who woulda thought it wouldn't have the needed go juice. Might pull 100 tonight to start.... As I cry in my soup. Worst part is it was 4 x 250 count boxes of Nosler Competition 135 grain .40's. I hope the bullets can be reused...
Glad to have given someone a chuckle at my expense!
