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Old June 12, 2012, 07:50 AM   #3
WWWJD
Senior Member
 
Join Date: February 9, 2011
Location: Central KY
Posts: 511
Cool test, with very clear results. Now you should try 22 through 26gr... see if you're accuracy lives down there somewhere. That'd be an interesting add to the data you've already got; group size / accuracy vs. velocity.

Wish I owned a chrony. Probably wouldn't like what I'm seeing, but at .5moa accuracy... I don't care.

According to Hodgdon, the CFE produces a significantly higher max pressure in the .308 as compared to the others. Doesn't appear to do this for the .223. I'd like to try the stuff at some point (haven't seen it for sale at the local supply yet).

Cartridge: 308 Winchester
Load Type: Rifle
Starting Loads
Maximum Loads

Bullet Weight (Gr.) Manufacturer Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure Grs. Vel. (ft/s) Pressure
175 GR. SIE HPBT Hodgdon H414 .308" 2.800" 46.0 2484 40,300 CUP 49.0 2629 50,100 CUP
175 GR. SIE HPBT Hodgdon CFE 223 .308" 2.800" 45.5 2612 49,600 PSI 47.5 2752 60,400 PSI
175 GR. SIE HPBT Hodgdon Varget .308" 2.800" 42.0 2583 42,600 CUP 45.0C 2690 48,600 CUP
175 GR. SIE HPBT Hodgdon BL-C(2) .308" 2.800" 43.0 2517 39,200 CUP 46.0 2706 50,300 CUP
175 GR. SIE HPBT Hodgdon H335 .308" 2.800" 38.0 2390 38,800 CUP 41.3 2592 50,100 CUP
175 GR. SIE HPBT Hodgdon H4895 .308" 2.800" 40.0 2489 39,100 CUP 42.7 2647 49,000 CUP
175 GR. SIE HPBT Hodgdon Benchmark .308" 2.800" 38.0 2400 40,100 CUP 41.5 2590 50,800 CUP
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~Mark

NRA fo Life Member

Last edited by WWWJD; June 12, 2012 at 07:58 AM.
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