Just got back from range with a 1929 model F--190 gr Barnes with both IMR 4064 and Varget. Also a 170 Sierra with IMR4064. Ran the 190s with 27,28,29 gr IMR 4064 and 28,29,30 gr of Varget. The Sierras with 30.5 gr IMR4064. POLLEN HERE HORRIBLE! All will fall out of chamber. 3/4" groups close in with 170s and the Varget 190's. No chrony. Sneezin so bad I left before I stretched it out. Will measure out case expansions and further evaluate. Believe my chamber a little rough. Even with the 150's from Graf & S, I have a slight amount of primer protrusion. Only With the 30 gr charge of Varget did the base become totally smooth. Edges of primer still rounded though.
