At the range this morning I shot a 3 shot group at 300yards that was 1-3/4 inches (outside to outside). That's a pretty big difference from starting to max. 4064 HXP brass CCI 200 primer 3.31" COAL I have hopped this up to 47.5 grains for a long (800 yards) range match I participated in this summer which also worked well. I also want to try an M118LR clone, that stuff is pretty nasty supposedly, its been changed up a few times, mostly the powder, first it was 4064, then 4895, then RE15, now its 4064 again i believe because it is less sensitive to temp change than RE15. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! ⦠Coincidentally, the last group I fired, comprising 43.5 grains of IMR 4064 behind 168-grain Sierra HPBT bullets loaded in Lapua brass, functioned perfectly and put four of five shots into one hole. My testing did confirm that 42.7gr was indeed an OCW charge. After firing nearly 1,000 rounds of factory ammo and handloads, Iâve learned a lot. I've done some more load testing with the 168gr TMK, 42.7gr IMR 4064. Try 41.5 to 42.5 grains maximum of IMR-4064 when loading the Winchester commercial brass. A good rule of thumb is Varget is as slow a powder as you want to use and even Varget is questionable. A load used in NM competition for decades in M1a's is a 168 SMK 41.5 grains IMR 4895 LC cases, CCI #34, OAL LT 2.800". That's ok, the starting load data I quoted was from the 2015 Hodgdon Annual Manual, I found my 2016 Annual Manual and it lists the same data. I would start at 40.5 grains and work up to 41.5. I then played with seating depth and found the right combo for my gun (OAL 2.870"). I am having trouble getting powders like Varget. Your velocities will be limited by your gas system, don't load hot. Buy, Sell, and Trade your Firearms and Gear. I figure I will start with three loads 43.5 gr. NOTE: While the below listed loading tables clearly show a wide range of powders for M1A / M14 load date due to the operation and speed of the rifle action some powders work much better than others. 168 grain SMK BTHP 46.7 gr. 175g SMK seated to 2.831 Im going to try this with Varget also since i have some. You can probably use the same powder charges with RE-15 and possibly go another .5 ⦠and max out at 45.6 gr . My other problem is the primers-in the last 4-5 months I have only found CCI 200, CCI 250, and Win LR primers. 25 Posts . Truth be known 48.0 IMR-4064 +/- has been the long held NM accuracy loading for 168/173 bullets at 3.30 COAL for almost a eon, so your recommendation of 47.5 under a 168 isn't out of line not knowing your COAL. You have to live within the limitations of the gas system. I have some of each. Try 40.0 to 41.0 grains maximum of IMR-4064 when loading the Lake City brass. Just got a can of IMR 4064 to try out w/ my .308 (Savage 10FP LE2, 1 in 10" twist) The IMR website lists: Starting at 41.5 gr. Genltefolks, Lately, I have been playing around with trying to find a new load for my .308 Savage, 24 inch barrel. The all around best powders are IMR 4895, Hodgdon H4895 and Accurate 2495. I want to put together a load using a 168gr A-max bullet and IMR 4064. 45.6 sounds pretty hot! Bullet: Sierra 175gr BTHP MatchKing (SMK) Brass: Lapua, new, full length sized Powder: IMR 4064 Primers: CCI 200 COAL: 2.235 (at the ogive, with comparator) I loaded sighters at 39.7, 40.5, and 41.3 grains. Discussion Starter ⢠#1 ⢠Jun 29, 2010. I did manage to get some IMR 4064,4320, and I already had some H-335. I have been using 168 SMK's, 45.5 Varget, Winny brass and CCI 200 LR primers, seated at COAL 2.870 and have been happy.