300BlkTalk

140-150gr is best, found the cheap hornady 150SPP to be very accurate in my 10" 1:8 pistol but i don't shoot 200 with it. It's a flat base heavy jacket exposed tip one. 140ish gets most powder with wind bucking and weight to have an effect on target. 110 vmax has decent bc and it pretty accurate for...

Not a problem, powder, primers Orr ammo. Nag can bleed out from high temp over a long time, lie years.

M.S. gives 1850 avg for the GD in 18" 1:10 barrel - 19gr cfeblk. I find the GD with (evidently) softer jacket is not as accurate as the 150SPP from hornady.

Yes I verified it works, as pointed out above, for us, no practical difference. Unless you are shooting Yeti on Everest (or 50bmg @ 1 mi. or more). NASA site has been dumbed down from ~15yrs ago, mostly for kids now. Trying to push kids toward science now but schools don't teach good math or science...

If you cast with hard alloy and push them hard that mould should work. Like the 110 vmax, have to seat way out to try to fill the freebore. Lube grooves are a problem. I run a slick sided 145gr cast @2k fps OK.

Go to the real answer.
https://www.grc.nasa.gov/www/k-12/airplane/sound.html

My point to the op who thought of a BO pistol for home defense, house or apt, spend the $ on a couple inexpensive 380,9,40 high cap. pistols & hide around the house. I hear S.G. or hunting rifle all the time, use what you got is OK but there are better choices. An 8 shot 45 will do the job, if you n...

I wouldn't suggest AR pistol for home defense.
Tried reply twice, auto timeout of login is stupid, bye.

OP said ar pistol. You ever shoot 45 inside without ears? At nite? Those are subs. Shotgun in a house? Ha. Try moving around. Real heavy penetrate a lot, light are hard to cycle ar.

Shooting 145,170 & 185gr cast at fps greater than pistol, low recoil, accurate close. cfe pistol (flash suppressed) cycles the AR. Other choice would be keltek 40sw carbine. 30 rnds beats my 40sw XD.