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Sierra load data 223 77 grain

Dec 18, 2014 · The 155 has only 1 BC point advantage over the current 155. The 175 comes back to life and Sierra says a 13 twist is ok. The .223 77 grain could be a game changer. Now with a BC is as high as the 80 grain bullets from Sierra and Berger. The 69 has the BC of the old 77 and go at least 200 fps faster with less recoil and barrel time and wear..

The 7.62x39 data is only available from Sierra - Nosler doesn't publish anything And for those who don't know, load data supplied by different bullet manufacturers cannot be interchanged because, among other things, the bullets are shaped differently with different bearing surfaces, copper alloy mixes etc. all of which go to different friction .... Aug 31, 2020 · All loaded with Sierra 77 SMK's Equipment: Upper: White Oak Armament Lower: Noveske Gen 3 Trigger: Geissele SSA Barrel: Krieger 20" 1-7:7 Optics: Leupold 4x33 - White Oak Armament Custom Chronograph: MagnetoSpeed Lite Rest: Caldwell The Rock Conditions: Temperature: 74° F Elevation: 50ft Wind: 5mph Wind Direction: NNW -> SSE Powder: Varied ....

There’s manufacturer data everywhere and about 1000 powders that will work for .223. Varget is very good and the sierra manual has 23.9grs listed as max. 24grs of varget and a 77gr SMK loaded at mag length is a common "sweetheart" load. Most guys fall between 24-24.6grs but obviously do your load work up.

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Sep 11, 2019 · The PMC X-TAC Match ammunition is a combination of PMC’s X-TAC high-performance line with the high-end bullets from Sierra Bullets. Sierra’s 77-grain Match Kings bullets have set numerous records worldwide and are generally an excellent choice for a precision rifle. For instance, I use Sierra’s 69-grain bullet with great results in my ....

Aug 31, 2020 · All loaded with Sierra 77 SMK's Equipment: Upper: White Oak Armament Lower: Noveske Gen 3 Trigger: Geissele SSA Barrel: Krieger 20" 1-7:7 Optics: Leupold 4x33 - White Oak Armament Custom Chronograph: MagnetoSpeed Lite Rest: Caldwell The Rock Conditions: Temperature: 74° F Elevation: 50ft Wind: 5mph Wind Direction: NNW -> SSE Powder: Varied ....

As popular as the 223 AI is, load data for heavier projectiles is still less available than you would think. In this post we are going to take a look at the 223 ACK IMP with four different bullets, the 69 grain Sierra MatchKing (SMK), 69 grain Tipped MatchKing (TMK), 77 grain TMK and 80 grain SMK..

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