It looks to have been answered multiple times now by a few different people. You need to turn the die down so more of the case goes into the die. If you had a headspace gauge and calipers it would clearly confirm what your chamber is already telling you.
Brass has to flow somewhere when sized. You squeeze the sides of the case down the brass flows forward increasing the length of the case and thus not fitting. Having the case go in further not just till it hits the shoulder but untill you push the shoulder back to 0.001 headspace past its yield point your fired case are and the bolt will close with no resistance. The case has gotten longer so you are having to move the shoulder back more in response just to get it back to the headspace of a fired case.
Basic reloading manuals and kits give you at best the ability to make ammo of factory spec of min SAAMI with their instructions and minimal tools. But fact of the matter is calipers and headspace gauges are mandatory if you want ammo that custom fits your chamber and longer case life. It allows for accurate record keeping as well so you can reproduce the results later.
The comments about the lube are helpful and should be taken but are not the root of the issue, IMO. They will however help make the sizing work as it should.
For a long time I use to make my case lube using 50/50 stp oil treatment/hoppes 9 took the thinnest of films and was plenty. Little on a sponge in a big zip-lock or do it manually rolling one at a time. Just use the Hrdy spray or the pad lubes from the major suppliers.
Brass has to flow somewhere when sized. You squeeze the sides of the case down the brass flows forward increasing the length of the case and thus not fitting. Having the case go in further not just till it hits the shoulder but untill you push the shoulder back to 0.001 headspace past its yield point your fired case are and the bolt will close with no resistance. The case has gotten longer so you are having to move the shoulder back more in response just to get it back to the headspace of a fired case.
Basic reloading manuals and kits give you at best the ability to make ammo of factory spec of min SAAMI with their instructions and minimal tools. But fact of the matter is calipers and headspace gauges are mandatory if you want ammo that custom fits your chamber and longer case life. It allows for accurate record keeping as well so you can reproduce the results later.
The comments about the lube are helpful and should be taken but are not the root of the issue, IMO. They will however help make the sizing work as it should.
For a long time I use to make my case lube using 50/50 stp oil treatment/hoppes 9 took the thinnest of films and was plenty. Little on a sponge in a big zip-lock or do it manually rolling one at a time. Just use the Hrdy spray or the pad lubes from the major suppliers.