Search:

I reckon thats your answer tight there, case JP gauge will prove it for sure

Have you tried this yet?? The other thing is if the bullets are not seated deep enough that can cause issues too.

if it shoots factory ammo without issue then its not the gun

...................................wait!!

I would bet it the base is the issue. use a marker to colour the base right round and 1/2 inch up and try chambering should show where its sticking if its the base

I would suggest, in my humble opinion
1. most likely the base will not be sized down enough assuming you are using regular dies not "small base" ones.
2. Buy one of these JP Gase Guage If it fits...