seating bullet too deep? 338 lapua
Hi all. I'm a handloading newbie. I reloaded for the first time ever last night.
I have a question about bullet seating and case bulge (and pressure).
I was reloading for 338 lapua magnum --- 225 gr Hornady SST bullets, Norma brass, 87,0 gr RL19. I seated the bullet ~.571 inches, all the way to the cannelure. I did not crimp the neck.
I didn't seat to this depth for any particular purpose, except that I was copying step-by-step the RCBS Precisioneered Handloading VHS tape. And the guy in the video was seating his bullets to the cannelure and crimping.
Looking at the charged rounds this morning, some of the cases look like they're bulging slightly in the neck/shoulder area. Is this dangerous? Do I need to scrap the lot and start again? If so, how do I go about that? Pull the bullets, primers, etc., out and resize again? How do I get live primers out?
Also, what are the proper guidelines for how deep to seat a bullet? This morning someone told me you seat to about the diameter (eg. seat a .338 caliber bullet .338"). Are there benefits/advantages to seating to other depths?
Sorry if these are newbie/stupid questions.
BTW... I'm shooting these in an AR-30.
Thanks in advance for your help.