BNAllen
Member
I am hand-loading a 55 gr. Sierra BlitzKing for my AR 15. I have sized the case and the load according to my Sierra manual. The manual has a COAL of 2.250" and I have seated bullet a tad deeper to COAL of 2.200" (I did this as 55 gr. Remington FMJ factory loads ran great ... this is their COAL). My problem, the hand-load is picked up from the magazine but the bolt lacks closing by about an 1/8 of an inch. I am unable to assist the round (into battery) and the charging handle requires considerable effort to extract the case. I see no visible signs of problems on the case or the bullet. All I can determine is the action prefers the full metal jacket load versus the plastic tipped BlitKing. Anyone have experience with this issue? Thanks!