Just a FYI. Yesterday I chrono'd my 9" (300blk) w/ 144gr FMJ Australian Outback. Muzzle velocity avg was 1830 fps. Days ago, same brand 125gr HP was 1977 fps average.
Just a FYI. Yesterday I chrono'd my 9" (300blk) w/ 144gr FMJ Australian Outback. Muzzle velocity avg was 1830 fps. Days ago, same brand 125gr HP was 1977 fps average.
I'm pushing 110's (Nosler ballistic tips, not Barnes) to 2050 fps with 18.5 grains of W296 at 2.060 COAL. 2100 fps would be doable with a charge still under max, but I liked how they shot so I didn't bother. This is with an 8.3" barrel.
The M1 carbine comparison, except with better projectiles, ballistic coefficient, and platform is a good one. If I recall correctly, I'm zeroed for 180 or 185 yards using a PBR calculation for a 5" target. Paper plate sized targets at 250 yd are easy, but it starts dropping off quite a bit after that.
I like the round for what it is, but it's definitely made me appreciate 5.56 more.
I am getting ready to zero my 9" MCX for the first time tomorrow, so I am ears wide open on a thread like this. Like Bamashooter, I also have that Aussie 300BLK ammo.
98% Sarcastic. 100% Overthinking things and making up reasons for buying a new firearm.
I generally use the 50 yard IBSZ for my AR's. I know it's primarily for 5.56 but I zeroed the 300BLK at 50yds also. I haven't looked up a graph to see what my drops would be though. Like I said earlier, 200yds is what I'm primarily concerned with knowing the drop for, as anything beyond is better served by 5.56 on up.
11C2P '83-'87
Airborne Infantry
F**k China!
My 16” barreled .300 Blk has taken Whitetail to 150 yds. with the 110 gr Barnes Black Tip.
This at a chrono’d 2370 FPS.
I look at it as a sort of .30/30 WIN. autoloader.
98% Sarcastic. 100% Overthinking things and making up reasons for buying a new firearm.
If it helps show velocity here are some of my results; actual chrono from my 8” CMMG barrel is 2105 with the Barnes factory loaded 110 Blacktip and 1914 with the Rem 130 Hog Hammer which is basically a 130gr Barnes bullet.
The same barrel with the Beck loaded 194 Lehigh ME bullet yielded 999 on one test and 962 on another day. Not sure what made the difference, the 999fps was at 43 degrees and the 962 at 53.
Cheers,
SBRSarge
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