.308 reload Question

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tyc147

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Speer (168gr. Match BTHP, 22" barrel, IMI Commercial brass, CCI 200 primer)
Varget start 42.0gr @ 2539 fps - Max 46.0 @ 2746 fps

Hodgdon (168gr. Sierra HPBT, 24" barrel, Winchester brass, Fed 210 primer)
Varget 46.0gr @ 2731 fps

Hornady (168gr A-MAX, 22" barrel, Hornady/Frontier brass, Fed 210 primer)
Varget start 35.5gr. @ 2100 fps - Max 42.7gr. @ 2600 fps

I will be reloading .308
I wil use Hornady 168g Amax with Varget.
But i check All three reloading book.
they list a difference.
But Hornady use a lot less Powder.why ??
I also try use 168G Sierra HPBT with 45G Varget . . no problom.
Q is Why same is bullet weight 168G.???
but they are not same.
Can i load 168G Amax with 45G Varget ???? ( same as i load 168G Sierra HPBT with 45G Varget ) anyone try it and suceesful.??
 
Every rifle is different. You HAVE to work up to what is max in your rifle. I would start at 38 gr and work up in 1 gr steps to 46. Once pressure signs appear STOP and fine tune from there.
 
Different bullets have different bearing surfaces, jacket material , and sometimes slightly different diameters so different max loads are not unusual. Also different rifles will tolerate different max loads as well. The old adage "start low and work up carefully" has been around for a long time for good reason. Stay within the manufacturers guidelines, be careful and you will be OK.
 
A quote--"But Hornady use a lot less Powder.why ??"


Hornady's lawyers are tougher.
Hornady has no magic formula. With slight variations, due to many factors, less powder means less pressure and less velocity.
 
Possible that hornady's brass is thicker, allowing less case volume.

In my opinion, 35.5gr is too low for a minimum starting load. I would start at 40gr.
 
"...Varget start 35.5gr. - Max 42.7gr..." According to Hodgdon's site(the powder maker), the Varget starting load for a 168 grain bullet is 42.0(2520fps). Max is 46.0(c)(2731fps). The Hornady data must be a misprint.
In any case, load for the bullet weight. Who made it doesn't matter.
 
sunray said:
"...Varget start 35.5gr. - Max 42.7gr..." According to Hodgdon's site(the powder maker), the Varget starting load for a 168 grain bullet is 42.0(2520fps). Max is 46.0(c)(2731fps). The Hornady data must be a misprint.
In any case, load for the bullet weight. Who made it doesn't matter.
Click to expand...

That is want i think.
(According i used Hodgdon's site data to load the other 168g bullet sucessful )
Any one have idea??
 
Hornady is showing 32.6 of Varget for their 160 grain FTX bullet. Those are solid copper. Solid copper bullet$ get loaded differently than lead cored bullets. They're longer and not as dense. Mind you, Barnes gives 41.0 of Varget as the starting load for their 165 and 168 grain solids. Something still isn't right about Hornady's data.
 
What happen if i use too low for a minimum starting load???
let say if 35.5Gr Varget is not right and too low .
 
Of all the manuals I bought the Hornady one I care for least. I would also average out the starting load for similar bullets and start there.
 
Hornady generally uses real rifles for their load data as supposed to test receivers, and that could account for the difference right there. Again, loading manuals are just GUIDES, not a the word of the lord from on high (that's Elmer Keith's columns and writings, lol). Take all the data from all the bullet makers with a 168 gr bullet and average it out, minimum to maximum, and start there. Then load numerous loads at each powder load weight and try them. When you see pressure signs, back off at least one grain. Hopefully you will find a load that you like before that, and you can fine tune it half a grain in each direction. Once you have the best shooting from that task, start varying your bullet seating depth until you get your best groups. Good luck. - dan
 
tyc147 said:
What happen if i use too low for a minimum starting load???
let say if 35.5Gr Varget is not right and too low .
Click to expand...

Inconsistent ignition, possible hang-fires or even a stuck projectile, primers backing out, case not sealing to chamber wall and allowing gases to flow rearward.

You need to have a certain amount of pressure, and when 4 out of 5 manuals say 40gr minimum, I would avoid going as low as 35gr.
 
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