So I have been reading here for a while now and finally joined up because of the valuable resource this site is. I am looking for an answer to a problem I ran into while developing a load for my 257 wby mag using a berger 115 and ran into a stumbling block. Rifle: Remington 700 cdl sf 26" Nosler brass Berger 115 vld So after reading the article on obtaining accuracy with berger by finding the correct OAL; starting at .010 from rifling and moving back .010 until the sweet spot is found. (Quick interpretation) Here is my issue: after finding the OAL needed to touch rifling using the Sinclair method I measured 3.65". If you are not familiar with Sinclair method it uses a tool to measure the distance from the rear of an action insert to the back of a bullet that has gently been pushed to touch rifling with a rod. Then after removing the bullet insert a once fired case into chamber and measure from rear of the action insert to head of the case, with these two measurements the difference between them plus the length of the bullet is OAL. So here are measurements Difference between case and rear of bullet: 2.449 Bullet length: 1.201 Total: 3.65" But with overall brass length of 2.55 and bullet length of 1.201 this is a maximum of 3.75" when added together, so my problem is only .100" of bullet is seated into neck of case when touching the rifling, and the berger has a .130" boat tail so my maximum length to have bearing surface contacting the neck of the case is 3.62" or .003" from the rifling. How far into the neck do I need to seat the actual bearing surface of the bullet? Obviously I cannot start at .010" from rifling so where should I start? I have been reloading for some time and never had any issue like this. I know the weatherby's are long throated but this is just crazy. I triple checked all measurements to be sure I was not off. I tried to use the bolt closure to seat a bullet at the rifling (my old method of finding rifling) but never got one long enough to have it seated deep enough to stay in the neck. Sorry for the lengthy post but any opinion on this would be greatly appreciated.