Hey all, I shoot a Tikka T3 chambered in 300 WSM. I don’t shoot it often but this year I went on an elk hunt. During the summer I practiced with an old box of Noslers. Gun was good but I was short on ammo. A friend found a box in Montana and bought it for me. Although the box is different, the ammo is the same 300 WSM AccuBond 180 gr. while hunting I had troubles push the bolt handle down to seat the bullet. In fact, I had to hit it 4-5 times hard after shooting my cow. I thought something must be wrong with the gun. When I returned home I went to my local gun shop. They said the gun is fine, but the brass neck is different on the two rounds (Old versus new ammo…I had 2 old bullets left). Has anyone else had this experience? I cannot use the remaining 19 bullets and will probably need to change ammo brands. Plus the Nosler brand is impossible to find in this caliber.