First Test: Sierra .30-Cal 195gr Tipped Match King (TMK)
Our friend Bill at Rifleshooter.com got his hands on some of Sierra’s brand new .30-Cal match bullets, the 195-grain Tipped Match Kings (TMKs). These feature an impressive 0.610 G1 BC above 2000 fps. We predict these new bullets will be popular with F-TR shooters shooting the .308 Winchester cartridge.
To see how the new 195gr TMKs perform, Bill loaded up some .308 Win ammo with IMR 4064, ranging from 40.5 grains up to 42.5 grains. That gave him a velocity range of 2438 FPS at the lowest charge weight, up to 2552 FPS at 42.5 grains. This was with a relatively short, 22-inch barrel. Best five-shot accuracy (and second lowest SD) was at 41.0 grains even, producing a 0.498 MOA five-shot group at 2480 fps (6.1 SD). CLICK HERE for full accuracy results.
>> READ Sierra 195gr TMK Test Report on Rifleshooter.com.
I headed to the range on a brisk November day. Targets were 2″ orange dots at 100 yards. All shooting was done prone from a bipod with a rear bag. The Nightforce 3.5-15X scope was set at 15X. All ballistic information was recorded with a MagnetoSpeed barrel-mounted chronograph. Temperature was 54° F. Standard deviation for the loads ranged from 5.3 to 20.5 FPS. Average standard deviation was 12.5 FPS. Five-shot group sizes ranged from .521″ (.498 MOA, ) to 1.057″ (1.010 MOA). Average group size for all ten loads was .692″ (.661 MOA).
New 195gr TMK offers Impressive Long-Range Ballistics
Bill was also interested in how the ballistics of the new 195gr TMKs compared to other .30-cal projectiles. Even with a moderate, 2539 fps velocity, the new 195gr TMK showed less wind drift than other Sierras, thanks to its high 0.610 G1 BC. It also had a flatter trajectory beyond 600 yards than the 175gr and 190gr Sierra MatchKings. (The faster-flying 175gr TMK had slightly less drop at all yardages.)
Bill explains: “For comparison purposes, I selected the 42.0 grain load, with a muzzle velocity of 2,539 feet/second and an SD of 6.9. This load is compared to loads for the 190 SMK, 175 SMK, 175 TMK, and 168 Federal Gold Medal ammunition in the test rifle. In other words, these aren’t maximum loads, but loads that I have developed and would feel comfortable shooting a match with in the rifle shown (you may note the 190 SMK is fairly slow, but this is what the rifle liked). Also note that this rifle has a relatively short 22″ barrel compared to those you might find on a purpose built f-class rifle.”
Bill provides a full write-up on the Rifleshooter.com website complete with target photos and load details. If you are interested in these new 195-grainers, you should read the full report.
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