Just a few suggestions for you
Make sure you're not over crimping, just use enough bell/flare to set the bullet in straight, all you need to do is remove the bell/flare, very little crimp is needed on straight wall brass. Plunk test your rounds in the barrel of your gun, most barrel chambers are larger than gages.
I was having some issues as you are , it could be a nick close to the rim preventing the round to go all the way in the gage. I eventually purchased an U die (undersized .001) from Lee which sizes the shell further down. Seemed to help. Check your sizing die, screw it down to the shell plate then back off slightly so you can size the case as far down as possible.
Also check the bullets size .355/.356
Good luck, take your time, do one step at a time, you'll figure it out. It can be aggravating sometimes, but hang in there.
