Hello,
I have a question concerning COL.
I’m a raw beginner loading my first rounds (9mm) on a Lee Classic Turret Press with the Pro Auto Disk and Safety Primer Feed options.
I’m using the Lee 4 die carbide set with the FCD. I’ve set up the dies using Lee’s instructions.
I loaded 10 rounds and am seeing what to my mind seems to be quite a variation in COL.
Powder: WSF
Primer: CCI 500
Bullet: Montana Gold 124 FMJ
Brass: Once fired Federal American Eagle that was loaded with 124 FMJ.
I set the COL using a dummy round with only brass and bullet, no primer, no powder.
Target COL was 1.135
Using a Frankford Arsenal digital caliper my dummy round mikes to 1.135 about half the time and 1.1345 the other half.
I’m using the .46 Auto Disk cavity and threw about 20 test loads before things settled down to 4.9 grains.
The COL for each of the 10 rounds is as follows:
round COL
1 1.133
2 1.131
3 1.1385
4 1.1335
5 1.132
6 1.1365
7 1.1395
8 1.1375
9 1.138
10 1.136
(Note that the number of the round in the list is not intended to indicate the order in which it was loaded; I didn’t record that data.)
I tried running the rounds with the longer COL’s back through the sizing and FCD dies and the COL does not change.
Also: I checked the primers and they all appear to be flush with the base.
What do guy’s think? Are those numbers to be expected or ?
Thanks!
Don.
I have a question concerning COL.
I’m a raw beginner loading my first rounds (9mm) on a Lee Classic Turret Press with the Pro Auto Disk and Safety Primer Feed options.
I’m using the Lee 4 die carbide set with the FCD. I’ve set up the dies using Lee’s instructions.
I loaded 10 rounds and am seeing what to my mind seems to be quite a variation in COL.
Powder: WSF
Primer: CCI 500
Bullet: Montana Gold 124 FMJ
Brass: Once fired Federal American Eagle that was loaded with 124 FMJ.
I set the COL using a dummy round with only brass and bullet, no primer, no powder.
Target COL was 1.135
Using a Frankford Arsenal digital caliper my dummy round mikes to 1.135 about half the time and 1.1345 the other half.
I’m using the .46 Auto Disk cavity and threw about 20 test loads before things settled down to 4.9 grains.
The COL for each of the 10 rounds is as follows:
round COL
1 1.133
2 1.131
3 1.1385
4 1.1335
5 1.132
6 1.1365
7 1.1395
8 1.1375
9 1.138
10 1.136
(Note that the number of the round in the list is not intended to indicate the order in which it was loaded; I didn’t record that data.)
I tried running the rounds with the longer COL’s back through the sizing and FCD dies and the COL does not change.
Also: I checked the primers and they all appear to be flush with the base.
What do guy’s think? Are those numbers to be expected or ?
Thanks!
Don.