Home Forums Hunting & Shooting AR and Tactical Rifles .300 HAM'R?

David, what barrel length are you running?
I've got a 1000 TNTs, and I'm debating picking up a hamr barrel.
Either that, or SBRing my AR10 and going 12.5.

Right now the AR10 SBR is winning, since I'v got a couple thousand pieces of 308 brass and over 30 pounds of H335, but on the other hand I've got a couple "pistol" lowers ready to roll, so the lack of paperwork/engraving is making this hard.

Purpose is deer/hog/bad guy capable rig around 20" with a long suppressor.

18"

I shot that group three times, because I kept thinking "nah..."

1,000 TNTs!!!!! crap i'm soooo jealous. i'm not close to empty yet, but i've already started letting the far ones go.

Ah, 18" -thanks.
Wilson combat barrels flat shoot!
Hope they run another big winter holiday sale this year.

I bought the TNTs back when speer was running the rebate. Paid less than 15 cents per. Wish I woulda bought 5k.

Fortunately we don't have the hog problem yet in TN, but I do get a bit jealous watching you guys eradicate them.

Are any of y'all running HAM'Rs in sbr / pistols?
I wonder how the velocity stacks up against a 12.5" Grendel.

Also wonder if it's terminally better than a 77 TMK in the 11-12" range.

not sure if this helps, but here ya go. info from bill wilson...

We have only built pistols with 11.3" bbls and mine gives 2320fps with the 130gr HotCore and still shoots sub-inch, it's my "car gun" for traveling.

We did a velocity test with the same bbl gradually cutting it from 20" down to 12.5"

BARREL LENGTH EFFECT ON VELOCITY
300 HAMR

125 SIERRA SBT PH 20" bbl 2534 FPS
125 SIERRA SBT PH 18" bbl 2498 FPS (-36)
125 SIERRA SBT PH 16.25" bbl 2486 FPS (-12)
125 SIERRA SBT PH 14.5" bbl 2441 FPS (-45)
125 SIERRA SBT PH 12.5" bbl 2367 FPS (-74)
TOTAL VELOCITY LOSS FROM 20 TO 12.5 167 FPS

130 SPEER FNHC 20" bbl 2485 FPS
130 SPEER FNHC 18" bbl 2460 FPS (-25)
130 SPEER FNHC 16.25" bbl 2438 FPS (-22)
130 SPEER FNHC 14.5" bbl 2412 FPS (-26)
130 SPEER FNHC 12.5" bbl 2346 FPS (-66)
TOTAL VELOCITY LOSS FROM 20 TO 12.5 139 FPS

150 SPEER FNHC 20" bbl 2202 FPS
150 SPEER FNHC 18" bbl 2194 FPS (-8)
150 SPEER FNHC 16.25" bbl 2171 FPS (-23)
150 SPEER FNHC 14.5" bbl 2146 FPS (-24)
150 SPEER FNHC 12.5" bbl 2105 FPS (-41)
TOTAL VELOCITY LOSS FROM 20 TO 12.5 97 FPS

ALL TESTING WAS DONE WITH THE SAME BARREL PROGRESSIVELY SHORTENED FOR NO BARREL TO BARREL VARIATION AND ALL AMMO FOR EACH LOAD FROM THE SAME LOT. ALSO ALL SHOOTING WAS DONE DURING A 5 HOUR PERIOD ON THE SAME DAY USING A LABRADAR TO MINIMIZE THE EFFECT OF ATMOSPHERIC CONDITIONS. ALL CHRONOGRAPH STRINGS WERE 10 SHOTS WITH THE HIGH AND LOW SHOT REMOVED FOR AN AVERAGE OF THE REMAINING 8 SHOTS.

AS YOU CAN SEE AS THE BULLET WEIGHT WENT UP BARREL LENGTH HAD LESS EFFECT ON VELOCITY. AVERAGING THE 16.25 TO 20 NUMBERS IT WORKS OUT TO 10.5 FPS PER INCH.

not sure how they addressed the gas tube length as the barrell was progressively shortened.

anyway, i'll also contribute this...

Did anyone hunt deer of elk with their HAMR this season?

How'd that work out?

I think once you cut the 308 down to 12.5", you're getting to near HAMR velocities anyway, and the HAMR is more efficient at that barrel length?

Not sure what velocity a 12.5" 308 gets, but @djones' post above shows the comparable HAMR velocities.

WC is showing 11.3" 300 HAMR barrels in stock.

I might have to get on the HAMR truck gun train.

that reminds me... time for another vid

Midsouth Shooters Supply has the 125gr TNTs in stock, if anyone is looking:
https://www.midsouthshooterssupply....ter-125-grain-hollow-point-tnt-500-count

Anyone know if Midsouth has a MIL discount?

I would bet they do

Everyone worth a fugk has a military discount in a military town.

funny how this thread keeps popping up. it must be for the vids

not sure if i have enuf kill shots for another music vid yet, but here are a cpl hunts in the meantime. the one with the crosshairs tilted are from chasing hogs across a field and hanging out the window... and i kept bumping the gun into the side mirror.

did someone say hamr? i cudda sworn i heard someone say hamr.

Dude......

DJONES

That is a fantastic video. Great shooting!!

My kill ratio on running hogs is about 1/100 LMAO

DJones,

Time for an update and more videos?

Djones can absolutely shoot. I am very impressed.