7.62 x 39 help
- Thread starter Shooterz
- Start date
The data from Hodgdon site is accurate but isn't the D4198 eqivalent of IMR4198 ? I could be wrong but if I'm right, you will be overloading your powder charges because IMR4198 calls for the following:
Starting Loads Maximum Loads
Manufacturer Powder Bullet Diam.
C.O.L. Grs.
Vel. (ft/s)
Pressure
Grs.
Vel. (ft/s)
Pressure
Hodgdon BL-C(2) .311" 2.150" 30.0 2,155 32,200 CUP 31.5 2,349 38,800 CUP
Hodgdon H335 .311" 2.150" 30.0 2,219 35,400 CUP 31.5 2,408 40,900 CUP
Hodgdon H4895 .311" 2.150" 28.0 2,171 29,900 CUP 29.0 2,249 33,600 CUP
Hodgdon H322 .311" 2.150" 28.0 2,210 32,900 CUP 29.0 2,323 35,400 CUP
IMR IMR 4198 .311" 2.150" 22.6 2,035 36,800 CUP 24.0 2,250 42,500 CUP
Hodgdon CFE BLK .310" 2.150" 27.5 2,377 34,200 CUP 29.7 2,554 40,500 CUP
Hodgdon H4198 .311" 2.150" 24.5 2,190 34,200 CUP 26.5 2,378 40,400 CUP
See the difference, by following Hodgon data for IMR Powder you will throw in more powder than you normally would
Starting Loads Maximum Loads
Manufacturer Powder Bullet Diam.
C.O.L. Grs.
Vel. (ft/s)
Pressure
Grs.
Vel. (ft/s)
Pressure
Hodgdon BL-C(2) .311" 2.150" 30.0 2,155 32,200 CUP 31.5 2,349 38,800 CUP
Hodgdon H335 .311" 2.150" 30.0 2,219 35,400 CUP 31.5 2,408 40,900 CUP
Hodgdon H4895 .311" 2.150" 28.0 2,171 29,900 CUP 29.0 2,249 33,600 CUP
Hodgdon H322 .311" 2.150" 28.0 2,210 32,900 CUP 29.0 2,323 35,400 CUP
IMR IMR 4198 .311" 2.150" 22.6 2,035 36,800 CUP 24.0 2,250 42,500 CUP
Hodgdon CFE BLK .310" 2.150" 27.5 2,377 34,200 CUP 29.7 2,554 40,500 CUP
Hodgdon H4198 .311" 2.150" 24.5 2,190 34,200 CUP 26.5 2,378 40,400 CUP
See the difference, by following Hodgon data for IMR Powder you will throw in more powder than you normally would
I do see what you mean.
The bottle says use IMR4198 data less 10%
I was going to go @ 10% less for D4198 and work up from there.
I've never used D4198 or any Dominion powder for that matter.
Which do you think 10% less of is a safe place to start ?
Any advice on the D4198 would be appreciated.
The bottle says use IMR4198 data less 10%
I was going to go @ 10% less for D4198 and work up from there.
I've never used D4198 or any Dominion powder for that matter.
Which do you think 10% less of is a safe place to start ?
Any advice on the D4198 would be appreciated.
I have used Dominion powder and still do and like it, I just use the D4064 for different cartridge and it works well. If you follow the IMR 4198 data you'll be fine. It calls for minimum 22.6 grains and maximum of 24 grain so if you start with 22 grains you'll be fine and that is using CCI 200 primer which is the hottest primer so if you use different primer like lets say Fed-210, you can easily start with the stated minimum of 22.6. I developed my load actually using Reloader-7 and my best performing load is near its maximum. Also, another thing that helps you, your bullets are slightly lighter(123 gr) vs. the load in the chart (125gr)
Thank you very much for the advice , it helps me alot and is a great place to start.
I do have CCI 200 primers and Federal 210's .
I also have some D4064SS and was going to try that in .300 BO and .223
I usually use H110 for those .
My bad. Fixed.
Unless you own pressure-testing equipment, the prudent approach to using a powder such as D4198 is to buy a pound of IMR4198 or H4198 and a chronograph. Load 10 cartridges with start loads of the "known" powder and the same amount with D4198. The average MV's of the two powders will give you a sense of the relative Burn Rates of those two powders with that load in your rifle.
Of course almost no-one wants to do that, as while they probably own thousands of dollars worth of shooting equipment, they can't afford a chrony and the pound of known powder - they want someone else to and report back. Then we're back to "IMR4198 - 10%" which is completely arbitrary, but "safe".
Of course almost no-one wants to do that, as while they probably own thousands of dollars worth of shooting equipment, they can't afford a chrony and the pound of known powder - they want someone else to and report back. Then we're back to "IMR4198 - 10%" which is completely arbitrary, but "safe".
