Anybody do anything with the Speer .458" 350 Hotcor?
I picked up a couple of boxes and a Lee .451" sizing die. I lubed them with Imperial Sizing Die Wax and stuffed them through the die. They sprang back to .452" on the other side, and are .990" long.
I loaded one dummy round just to look at.
My magazine will accept it loaded out to 2.290"
My rifle is the Ruger AR with 18" bbl and 16" twist.
It is boxed up right now for a trip back to Ruger. I think that the chamber is too tight. Hornady Black 250FTX will not pass the plunk text and gets stuck about 3/8" out. This is with a squeaky clean chamber and barrel.
I've been doing some reading on using heavy bullets in the 450, it seems that most everybody suggests AA1680.
I have Quickload to give me some ideas as to start and max loads.
Quickload suggests that
35gns should give 1681fps @ 33kpsi at 85% load density
37gn should give 1795fps @ 40kpsi at 92% load density
I was just wondering if anyone had used this bullet with any success.