UPDATE: Browning A-Bolt 243 WSSM--What a disappointment
The local Browning-certified gunsmith told me that this gun will onlyfeed cartridges from its magazine into the chamber that have aCOL equal to or less than the factory ammo's COL (about 2.220"), and that the ballistic tip bullets (very pointy) are about the only ones that will feed from the mag into the chamber without jamming against the front edge of the chamber entrance.
So...I shortened my ballistic tip reloads by 0.060" and they feed just fine. Further measuring shows that HPBT bullets (almost pointy) need to be shortened another 0.015".
The bottom line here is that, ifyou wish to usereloads with a COL long enough to have the bullet close to the lands, then you have to use the rifle in single-shot mode (no feeding from the magazine). The magazine is very cheap and falls apart in your hands sometimes, so this is no loss.
This gun is still disappointing.
John