hey guys, i have a 257 weatherby in a remington 700 action that i just got back from the gunsmith. the barrel is a broughton 26" barrel. My scope finally came in and so i went to the range today to put break in the barrel and to sight the scope in. i had 3 factory weathery rounds and they chambered and shot fine. but when i went to my handloads the bolt would go all the way forward but i wasnt able to close it. the brass was from my vanguard before i sold it and had the gunsmith build my new rifle. i am using froster seater and sizer dies set up per their directions. does it seem like i dont have the dies set up right? im kinda at a lost as to why my handloads wouldnt chamber. is there something that i can change so i can still use the brass or am i going to have to buy new brass? If yall can help me out i would really appreciate it. thanks for your time.