Have a new 7mm RUM barrel with tight neck and minimum headspace chamber.
First time to the range to break the barrel in everything went well. Cartridges chambered easy, bolt was easy to lift.
Sized the cases with the Redding Body die with the die set all the way down to contact the shell holder. Checked length of the cases, all ok. Neck sized the cases with a Redding Type S Bushing die.
Loaded them with a couple of grains less than max loads, bullets just into the lands. Weighed all charges. Loaded 162 AMAX and 168 Berger VLDs.
All cartridges chambered easy, bolt closed with no resistance on all cartridges.
Things became strange when I fired them.
Some worked as expected, no problems, bolt opened just fine. Some the bolt would lift ok, but would stop just before the top where the bolt cams open. Some were hard to lift and hard to cam open.
All primers looked fine, nothing got flattened. Cases looked ok, nothing out of the norm. The cases have been fired several times.
This is the first time I have ever had a bolt stop at the top and had to be pushed hard/tapped the last bit of rotation.
Any ideas as to whats up?
Doug
First time to the range to break the barrel in everything went well. Cartridges chambered easy, bolt was easy to lift.
Sized the cases with the Redding Body die with the die set all the way down to contact the shell holder. Checked length of the cases, all ok. Neck sized the cases with a Redding Type S Bushing die.
Loaded them with a couple of grains less than max loads, bullets just into the lands. Weighed all charges. Loaded 162 AMAX and 168 Berger VLDs.
All cartridges chambered easy, bolt closed with no resistance on all cartridges.
Things became strange when I fired them.
Some worked as expected, no problems, bolt opened just fine. Some the bolt would lift ok, but would stop just before the top where the bolt cams open. Some were hard to lift and hard to cam open.
All primers looked fine, nothing got flattened. Cases looked ok, nothing out of the norm. The cases have been fired several times.
This is the first time I have ever had a bolt stop at the top and had to be pushed hard/tapped the last bit of rotation.
Any ideas as to whats up?
Doug