06-26-2022, 10:11 PM
Ciws,
Your two chambers will be different for sure; one will be tighter than the other, and that is normal. Your Lyman rifle gauge is equivalent to a third chamber, and the sizing die is a fourth. The sizing die and Lyman gauge do not check how you load the bullet into the neck. Your cases can pass the Lyman gauge but still not chamber because of two possibilities; (1) the CZ chamber is tighter than the Lyman gauge (unlikely), or (2) you have seated those bullets too long and they are jamming into the throat on loading.
If the neck is not tight you might be able to use the compound leverage of that bolt to close and fire it. But if you close it and then try and open it without firing it will be sticky and probably leave the bullet stuck in the chamber and powder will spill out in the gun as you extract it. This sort of thing is best done at the range with the intention of firing it. pressures will be higher but it's a bolt gun. Doing this just gets rid of the cartridges and you want tot know why so it won't happen again.
Have you measured the OAL of these two cartridges against ones that will chamber?
Are you familiar with how to determine where your lands are (OAL limits) for each type of bullet?
Have you measured spent cases from the CZ to determine its headspace?
Klem
Your two chambers will be different for sure; one will be tighter than the other, and that is normal. Your Lyman rifle gauge is equivalent to a third chamber, and the sizing die is a fourth. The sizing die and Lyman gauge do not check how you load the bullet into the neck. Your cases can pass the Lyman gauge but still not chamber because of two possibilities; (1) the CZ chamber is tighter than the Lyman gauge (unlikely), or (2) you have seated those bullets too long and they are jamming into the throat on loading.
If the neck is not tight you might be able to use the compound leverage of that bolt to close and fire it. But if you close it and then try and open it without firing it will be sticky and probably leave the bullet stuck in the chamber and powder will spill out in the gun as you extract it. This sort of thing is best done at the range with the intention of firing it. pressures will be higher but it's a bolt gun. Doing this just gets rid of the cartridges and you want tot know why so it won't happen again.
Have you measured the OAL of these two cartridges against ones that will chamber?
Are you familiar with how to determine where your lands are (OAL limits) for each type of bullet?
Have you measured spent cases from the CZ to determine its headspace?
Klem