Please anyone with quickload

[muzz]

223 Remington
24” barrel
50 gr vmax
xterminator powder loads.
I would appreciate it thank you

 

[RiverRider]

I use X-Terminator in my M70 HV in .223, and I found 25.6 grain of X-Terminator to be very accurate. According to my records I have not chronographed it, which kinda surprises me, and QL indicates I'm giving up some velocity, but for half-MOA performance I won't complain too much. I am shooting 50-grain Ballistic Tips, but I think V-Max should shoot about the same...that's been my experience with both bullets.

Cartridge          : .223 Rem. (SAAMI)
Bullet             : .224, 50, Hornady V-MAX BT 22261
Useable Case Capaci: 26.081 grain H2O = 1.693 cm³
Cartridge O.A.L. L6: 2.260 inch = 57.40 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Ramshot X-Terminator *C



Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-09.5   93    23.90   3004    1002   39978   5982     87.0    1.103
-08.5   94    24.15   3036    1024   41278   6057     87.6    1.088
-07.6   95    24.40   3069    1045   42624   6131     88.2    1.072
-06.6   96    24.65   3101    1067   44018   6203     88.8    1.057
-05.7   97    24.90   3133    1090   45461   6274     89.4    1.042
-04.7   98    25.15   3165    1112   46955   6344     89.9    1.028 
-03.8   99    25.40   3197    1135   48504   6412     90.5    1.014 
-02.8  100    25.65   3230    1158   50108   6479     91.0    0.999 
-01.9  101    25.90   3262    1181   51771   6544     91.5    0.986 
-00.9  102    26.15   3294    1205   53495   6608     92.0    0.972 
+00.0  103    26.40   3327    1229   55283   6670     92.5    0.959 
+00.9  104    26.65   3359    1253   57137   6730     93.0    0.945 
+01.9  105    26.90   3391    1277   59062   6788     93.5    0.932 
+02.8  106    27.15   3424    1302   61060   6845     93.9    0.919 
+03.8  107    27.40   3456    1326   63134   6899     94.3    0.907 
+04.7  108    27.65   3489    1351   65289   6952     94.8    0.894

 

[desertcj]

My chronograph results with Ext and 50gr Speer TNT in a 24” barrel match that QL prediction pretty closely. I was getting slightly higher velocities per charge weight than shown but I’m using mollied bullets with a different bearing surface than a 50gr vmax and a longer OAL I’m pretty sure. Chart is pretty close regardless is all I’m saying. Plus or minus 50fps…

 

[muzz]

I’m just wondering where 26.4 grains of exterminator is at on the pressure. I know the vmax from what I have seen is different from the ballistic tip on loading

 

[RiverRider]

I ran this with the V-Max.

 

[muzz]

I ran this with the V-Max.

Ok so I’m seeing 26.4 as being safe. I know watch for pressure signs yada yada but this looks good. Right?

 

[RiverRider]

Should be fine. Just watch your velocities, and if/when you reach about 3400 fps, you're pretty close to the limit.

 

[muzz]

Thanks.

 

[muzz]

I’m not new to loading but I don’t have quick load. Just want to see where things were at. Max load from ram shot is like 24.8-25. I’m at 24.6 and only 3050 fps. That sucks

 

[RiverRider]

First, note that max loads given on the Hodgdon website max out at approximately 3350 to 3400 fps--including the 50-grain V-Max.

Be aware that brass volume can have a large influence on velocities at a given charge, as is also true with your chamber.

Another variable is the chronograph itself, and variability due to users' habits and other factors.

There are also lot-to-lot variations in the powder itself.

You could possibly be dealing with more cavernous brass, a slightly larger chamber, a slower burning lot of powder, and a chronograph that turns in lower numbers---all at the same time. Weird stuff happens.

Given all these facts, I would push beyond the published max charge as long as I could be confident that the velocity readings are correct. If you do not own pressure measurement equipment, then your best pressure estimation method is by velocity readings. Just be certain that you really do know what your velocities are, and push on up to 3350 or so if you need to go that far to find accuracy.

Screw that last 100 or 200 fps. Stop where you find accuracy. I'll betcha you'll see accuracy at about 25.6 grains, +/- two or three tenths.

 

[JD338]

First, note that max loads given on the Hodgdon website max out at approximately 3350 to 3400 fps--including the 50-grain V-Max.

Be aware that brass volume can have a large influence on velocities at a given charge, as is also true with your chamber.

Another variable is the chronograph itself, and variability due to users' habits and other factors.

There are also lot-to-lot variations in the powder itself.

You could possibly be dealing with more cavernous brass, a slightly larger chamber, a slower burning lot of powder, and a chronograph that turns in lower numbers---all at the same time. Weird stuff happens.

Given all these facts, I would push beyond the published max charge as long as I could be confident that the velocity readings are correct. If you do not own pressure measurement equipment, then your best pressure estimation method is by velocity readings. Just be certain that you really do know what your velocities are, and push on up to 3350 or so if you need to go that far to find accuracy.

Screw that last 100 or 200 fps. Stop where you find accuracy. I'll betcha you'll see accuracy at about 25.6 grains, +/- two or three tenths.

Solid advice right there.

JD338