Most temp insensitive 223 throwable powder?

[timelinex]

So what is the most temp insensitive 223/5.56 powder that still meters well? Here in phx winters get down to 40s and summers go to 115.. Varget has worked very well in my 308, but I trickle that . I am attempting to load for my ar using something that meters well , so I can just use something like a chargemaster. Not worth trickling for it.

Fron research I know aa2520 an ram shot tac meters very well but is very temp sensitive. Varget and re15 meters poorly but are more temp insensitive.

Is there something in between?

 

[dmpowder]

Re: Most temp insensitive 223 throwable powder?

8208XBR or Benchmark!

 

[poke5353]

Re: Most temp insensitive 223 throwable powder?

Alliant ar-comp as well. It is still extruded powder but it is smaller kernels which drop better on my progressive press.

 

[timelinex]

Re: Most temp insensitive 223 throwable powder?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dmpowder</div><div class="ubbcode-body">8208XBR or Benchmark! </div></div>
What makes both these powders considered for 'benchrest' (as per their descriptions). The reason I ask is because this is going in a DD 16" ar15.

Seems like 8208XBR is the answer I was looking for. Doing more research on it, it is temp insensitive, meters well and provides accurate loads for many. Thank you!

SH never dissapoints!

 

[AtOne]

Re: Most temp insensitive 223 throwable powder?

Here's another good read on Tac and other options reguarding temperature sensitivity if you haven't seen it.

 

[RyeDaddy]

Re: Most temp insensitive 223 throwable powder?

Another vote for the wonderful IMR 8208 XBR.

 

[jephs422]

Re: Most temp insensitive 223 throwable powder?

I throw h335 out of my chargemaster and it works great. However I do find myself fiddling with an overthrow every 25 or 30. Im ok with that though.

 

[Trapshooter12]

Re: Most temp insensitive 223 throwable powder?

My 223 is a Bolt rifle and I tried several different powders. I settled on Benchmark behind a 55 grn Blitzking. I liked H335 in the winter time but as soon as it warmed up my groups spread out. I found Benchmark stayed true no matter what the temp is.

 

[Jim Buck]

Re: Most temp insensitive 223 throwable powder?

I think Tac meters well, was not aware it was temp sensitive.

 

[1911fan]

Re: Most temp insensitive 223 throwable powder?

Accurate 2460. Meters like water, works well in all my ARs and bolt guns. I use it for sage rats and rockchucks n the spring and summer, coyotes in the winter, and have never had a problem.


1911fan

 

[aviumvenator]

Re: Most temp insensitive 223 throwable powder?

I am currently using ARComp. It is a shorter stick than Varget. In my polished Dillon powder measure on a 650 it throws a .3 range.

There is a temp. review of ARComp on here somewhere.

 

[Temp9]

Re: Most temp insensitive 223 throwable powder?

AR-Comp. Excellent temperature stability and meters well enough. Good accuracy, too.

 

[pdice]

Re: Most temp insensitive 223 throwable powder?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RyeDaddy</div><div class="ubbcode-body">Another vote for the wonderful IMR 8208 XBR. </div></div>

I thought it was great for a temperature insensitive powder, but not so much as an easy throwable powder. I much prefer ramshot TAC for that.