Why 300 BLK? This is why.

[voip-1]

What would the holdover be for 110 grain 300 BLK super-sonic lobbed at a target 300 yards away?

[dellet]

What would the holdover be for 110 grain 300 BLK super-sonic lobbed at a target 300 yards away?

What zero, what barrel, what platform and what bullet?
I have some loads that will have a 3 MOA drop with a 200 yard zero from a 16 inch barrel. With a 100 yard zero it drops closer to 7 MOA.

Another that is more like 4 and 9 MOA from the same barrel.

I would not consider those "being lobbed in"

Edited drop numbers from inches to MOA Thanks to jwb47 for correcting me without busting my butt

[voip-1]

What would the holdover be for 110 grain 300 BLK super-sonic lobbed at a target 300 yards away?

What zero, what barrel, what platform and what bullet?
I have some loads that will have a 3 inch drop with a 200 yard zero from a 16 inch barrel. With a 100 yard zero it drops closer to 7 inches.

Another that is more like 4 and 9 inches from the same barrel.

I would not consider those "being lobbed in"

Sorry, I should have been more specific. pistol length system with short 8-9" barrel. Really just a curiosity thing. My understanding is that 300 yards/meters is kind of the outside effective range with the round in shorter barreled rifles... not that I plan on shooting much stuff with it at that range anyway.

[jwb47]

What would the holdover be for 110 grain 300 BLK super-sonic lobbed at a target 300 yards away?

What zero, what barrel, what platform and what bullet?
I have some loads that will have a 3 inch drop with a 200 yard zero from a 16 inch barrel. With a 100 yard zero it drops closer to 7 inches.

Another that is more like 4 and 9 inches from the same barrel.

I would not consider those "being lobbed in"

are you shooting a 300 blackout ? If so I would like to know what load you are using . gas gun or bolt gun ?

[dellet]

What would the holdover be for 110 grain 300 BLK super-sonic lobbed at a target 300 yards away?

What zero, what barrel, what platform and what bullet?
I have some loads that will have a 3 inch drop with a 200 yard zero from a 16 inch barrel. With a 100 yard zero it drops closer to 7 inches.

Another that is more like 4 and 9 inches from the same barrel.

I would not consider those "being lobbed in"

Sorry, I should have been more specific. pistol length system with short 8-9" barrel. Really just a curiosity thing. My understanding is that 300 yards/meters is kind of the outside effective range with the round in shorter barreled rifles... not that I plan on shooting much stuff with it at that range anyway.

I have not ran these loads through a chrono with an 8 inch barrel. By dropping the velocity 50 fps per inch of barrel, I would expect a drop of round 4.5 MOA at 300 yards with a 200 yard zero, high at 100 yards from a 9 inch barrel.
100 yard zero 7.5 MOA drop at 300 yards.

This was based on a 110 Vmax and 110 Varmageddon in an AR to allow for magazine length, the same was achieved with a Barnes in a bolt action.

Edit for same inch vs MOA mistake

[nolwark76]

From a 9" barreled 300 BLK rifle, at 300 yards the 110 bullet will have a MV of around 2200 fps which will only drop 28.3 inches or 2.6 mils and have 511 ft/lbs of energy. A 10.5" barreled 5.56 with 55 grain ammo will be going 1574 fps which is below it's minimum expansion velocity and have only 302 ft/lbs energy.

Your understanding is off. In a .223/5.56 rifle, yes it would be outside the effective range although I still wouldn't want to be shot with a bullet from a .223 at any distance. It's going to be going half the speed of smell but even at a 1000y it's still going to leave a nasty welt!

300 BLK only loses about 200 fps from a 16" to a 9" barrel. Significantly more efficient than a .223 because the 300 BLK is burning pistol powder which is faster burning and is burned up completely by the end of the 9" barrel and therefore doesn't have the report, flame, or fps loss like a .223 SBR would. Also the larger surface area of .308 vs .224 on the base of the bullet to get it moving. It's like a mechanical advantage.

The 110 black tip will expand down to 1300 fps (from a quick search- someone correct me if I'm wrong) which from a 9" barrel would be about 350 yards. If you handloaded it a little hot you might get out to 400 and still get expansion. Beyond that it will act like any other FMJ and just tumble or deform a bit. If, and I can't think of a reason I would need to as a civilian, I needed to shoot something past 350 yards, I would still rather have a 9" 300 BLK vs a 16" or shorter 5.56 with 55 grain ammo because at that distance they will both be tumbling bullets right? Right. The 55 grain vs 110 grain is just a smaller bullet and while not ideal, I'm guessing the 110 Barnes will cause more damage tumbling than a 55 grain whatever.

[nolwark76]

Maybe I misunderstood. 50 fps velocity drop per inch of barrel? Even from an 8" barrel that's not right. In a 9" barrel it's about 28fps but it's not linear per 300BLK (RSilvers). I'd have to dig up the post and I just don't feel like it. It's not 28 fps per inch, there is a curve. Ask him if you don't believe me.

[jwb47]

nowlark those numbers pretty well jive with what I have determined . the v-max , varmageddon and barnes all have a b.c. in the 290 range .
shooting across a chrony at 2350 fps with a 100 yd zero your looking at right at 7 inch drop at 200 yds and around 24,5 inches at 300 yds I have verified this with a pair of tennis shoes and a folding ruler . I should say I shot these out of a 16 inch rifle.

[dellet]

What would the holdover be for 110 grain 300 BLK super-sonic lobbed at a target 300 yards away?

What zero, what barrel, what platform and what bullet?
I have some loads that will have a 3 inch drop with a 200 yard zero from a 16 inch barrel. With a 100 yard zero it drops closer to 7 inches.

Another that is more like 4 and 9 inches from the same barrel.

I would not consider those "being lobbed in"

are you shooting a 300 blackout ? If so I would like to know what load you are using . gas gun or bolt gun ?

I will not share the load as it will get someone in serious trouble if great care is not taken. I will share the process, you can decide if it is safe to try.

To start with brass is trimmed to 1.366.

As stated in the other reply same results both gas and bolt 300 Blackout. I started with a bolt action to allow for maximum COL. and to find where pressure signs started, working up from 18.5 grains of H110. The bolt action is more forgiving as chambering force could be controlled. When I found a load that I felt was maxed out, I backed off half a grain. The seating depth of the bullet was .090.

For function in the AR I loaded dummy rounds and loaded them at various places in a magazine loaded with other live safe load rounds. When I had a missfire I knew the dummy round was in the chamber. It was removed and measured. This allowed me to find a level of crimp that would prevent bullet movement under rapid fire. I then dropped back the load and worked up using the crimp.

Where I am now is a 110 grain bullet, exceeding 2600 fps in a 16 inch barrel, that will hold a fist sized group of 20 rounds, at 100 yards using an ACOG, firing as fast as I can get the dot back on target using a bipod.

[dellet]

Maybe I misunderstood. 50 fps velocity drop per inch of barrel? Even from an 8" barrel that's not right. In a 9" barrel it's about 28fps but it's not linear per 300BLK (RSilvers). I'd have to dig up the post and I just don't feel like it. It's not 28 fps per inch, there is a curve. Ask him if you don't believe me.

I used 50 fps as a way to not over estimate in a calculator. I used 2300 fps. Using a 110 grain bullet at 2300 gave the numbers posted.