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SavageF/TR308 · January 16, 2010, 01:38 PM

Just tried out a new load for my .308 yesterday... I used 45 grains of Varget behind a 168 grain sierra matchking, using a CCI 200 Large Rifle primer. The crono showed it going an average of 2835fps. Hodgdon's load data on the Varget container said 46 grains with this same bullet but a Federal 210M primer would net just over 2700fps. Does the M on the end of the federal primer stand for magnum? If so, this even further confuses me. I loaded up some 150 grain Hornady SST bullets a while back with H380(cant remember the charge, but it was almost a compressed load) and they only showed about 2700 on the crono. Maybe the Varget likes a long barrel better? My rifle has a 30 inch barrel. Just seemed wierd that by changing powders and going with a heavier bullet that they would go faster.

January 16, 2010, 01:38 PM	#1
SavageF/TR308 Junior Member Join Date: January 15, 2010 Location: Western Oklahoma Posts: 4	New Load Just tried out a new load for my .308 yesterday... I used 45 grains of Varget behind a 168 grain sierra matchking, using a CCI 200 Large Rifle primer. The crono showed it going an average of 2835fps. Hodgdon's load data on the Varget container said 46 grains with this same bullet but a Federal 210M primer would net just over 2700fps. Does the M on the end of the federal primer stand for magnum? If so, this even further confuses me. I loaded up some 150 grain Hornady SST bullets a while back with H380(cant remember the charge, but it was almost a compressed load) and they only showed about 2700 on the crono. Maybe the Varget likes a long barrel better? My rifle has a 30 inch barrel. Just seemed wierd that by changing powders and going with a heavier bullet that they would go faster.