Phillip Sharpe wrote in his 1937 book "Complete Guide to Handloading" (Page 96) that he was successfully shooting the Lyman 311413 169gr "Squib" bullet in his 30-06 Springfield out to 2200fps with 1-1.25MOA accuracy off a rest in 10-shot groups using standard gas checks and his personal lube recipe. He further compounded this claim with his work with Hercules gunpowder's ballistics office where they got 2600fps with that same bullet/gas check and lube combo with no leading but didn't report the final powder load (He was using an now obsolete and out of production Hercules Sharpshooter brand gunpowder with psi values on the loads going from 33K to 55K)
Sharpe's personal bullet lube for high velocity work? Colloidal graphite in distilled water painted onto the bullet with a camel's hair brush and allowed to dry. Pre-PC but a unique way to prevent leading in his rifles.
his book is available at this link: http://cnqzu.com/library/Anarchy%20F...rpe%201937.pdf
Now enough of the background on an out of date reference book in a PC sub-forum thread. But this will be the basis of my planned experiments this year with the 311413 "Squib" bullets with a gas check and PC coatings. I hope to replicate those same group sizes and hopefully use this bullet design in a 200-300 yard Highpower rifle match with an AR10 chambered in 308 Win.
I will try to update this thread with commentary and pictures throughout the spring and summer with initial load testing at 100 yards and then the actual range performance at one of the rifle matches this spring.
Bruce