Hi, I'm fairly new to reloading so I'm hoping to get some advice from more seasoned vets.
I recently got some cfe 223 for use in some .308 loads with some 175gr Sierra matchkings.
According to the hodgdon website starting load is 45.5 gr and max load is 47.5, so I loaded 25 rounds (5 groups of 5) starting with 5 at 45.9 gr and increasing .3 grains all the way up to 47.1
I also ran these loads through quickload with correct case measurements and capacity to help verify the loads were safe.
I got out to the range this past weekend and started with a 45.9gr round and it was WAY over pressure. The concussion and recoil was noticeably heavier and the bullet chrono'd at 2750. When I checked the brass, the primer was almost blown out of the case and the the firing pin indent was an outdent.
I always hand weigh charges and I have pulled the other 4 from that group to verify the charges were correct, and they were.
Quickload says that to push 175 smk's 2750 means I had a chamber pressure around 68,000
Did I screw up somewhere? I've never had this kind of discrepancy from published load data before.
Any help is appreciated.
I recently got some cfe 223 for use in some .308 loads with some 175gr Sierra matchkings.
According to the hodgdon website starting load is 45.5 gr and max load is 47.5, so I loaded 25 rounds (5 groups of 5) starting with 5 at 45.9 gr and increasing .3 grains all the way up to 47.1
I also ran these loads through quickload with correct case measurements and capacity to help verify the loads were safe.
I got out to the range this past weekend and started with a 45.9gr round and it was WAY over pressure. The concussion and recoil was noticeably heavier and the bullet chrono'd at 2750. When I checked the brass, the primer was almost blown out of the case and the the firing pin indent was an outdent.
I always hand weigh charges and I have pulled the other 4 from that group to verify the charges were correct, and they were.
Quickload says that to push 175 smk's 2750 means I had a chamber pressure around 68,000
Did I screw up somewhere? I've never had this kind of discrepancy from published load data before.
Any help is appreciated.