I load 308 match ammo by weighting each charge of Varget (or N140) with a RCBS ChargeMaster. This a bit slow, but the ammo has been excellent.
I recently acquired 3 jugs of Winchester StaBall Match in the hopes that I could develop a ball powder load that I could make with the Dillon. Ball powder tends to throw excellent charges.
My first test with StaBall was in 308 with 175 gr bullets. Averaged around .6 of a minute. Excellent! That is how I will make my own 308 ammo in the future.
I also make ammo for my son. He needs 308 ammo loaded with 155 gr bullets. I estimated that the Staball was a tad slower than N140, so would need about a grain more powder.
The first group was with the usual N140 load. Did ok, although my rifle does not like this bullet.
The I tried 47.2 gr of StaBall. A bit slower and a terrible group.
So I tried more powder, to get the velocity closer to the N140 load. Still terrible. But notice the ES and SC is very good.
I started to think something must have gone wrong with the rifle or scope, so shot another N140 group. Good group.
I then tried a similar test with a 6.5x55 loaded with 129 gr bullets. Terrible groups, but a previous test with 140 gr bullets was excellent. It seem this powder needs heavier bullets....
I was getting the chrony data via bluetooth from a chrony about 20 feet in front of the bench. A buddy just got a Garmin, so he put it on the bench and we compared. The Garmin was a consistent 50fps faster. I assume that is the difference between muzzle velocity and down range velocity.
I recently acquired 3 jugs of Winchester StaBall Match in the hopes that I could develop a ball powder load that I could make with the Dillon. Ball powder tends to throw excellent charges.
My first test with StaBall was in 308 with 175 gr bullets. Averaged around .6 of a minute. Excellent! That is how I will make my own 308 ammo in the future.
I also make ammo for my son. He needs 308 ammo loaded with 155 gr bullets. I estimated that the Staball was a tad slower than N140, so would need about a grain more powder.
The first group was with the usual N140 load. Did ok, although my rifle does not like this bullet.

The I tried 47.2 gr of StaBall. A bit slower and a terrible group.

So I tried more powder, to get the velocity closer to the N140 load. Still terrible. But notice the ES and SC is very good.

I started to think something must have gone wrong with the rifle or scope, so shot another N140 group. Good group.

I then tried a similar test with a 6.5x55 loaded with 129 gr bullets. Terrible groups, but a previous test with 140 gr bullets was excellent. It seem this powder needs heavier bullets....
I was getting the chrony data via bluetooth from a chrony about 20 feet in front of the bench. A buddy just got a Garmin, so he put it on the bench and we compared. The Garmin was a consistent 50fps faster. I assume that is the difference between muzzle velocity and down range velocity.
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