Load work up in a ar10, lr308 Re: pressure ladder

[JiggyIi]

I just checked my loads. I'm getting 2800' with 165-168's , 26" pipe with Varget not BlC2

 

[ARlife4me]

I just checked my loads. I'm getting 2800' with 165-168's , 26" pipe with Varget not BlC2

That's still good fps with those bullets!

 

[ed209clark]

I'm using varget, 42 g behind a 168 or 175gr projectiles for the .308 and my 7-08 ar I'm using 44g 4350 and140gr AB 20 and 24" bbls I use the same for my rifles and never had a problem. Sub moa out of both forget the V. But it doesn't matter when I get 1/2moa if I do my part, coal was whatever would fit in the lancer mags I'm using lantec BCG

 

[budlight]

Can I ask where you got a 26" pipe from? I can't find anything over a 20"

This is my SS fluted 24 inch 308 with NON threaded 11 degree target crown with rifle +2 inch gas system which allows running full 60K + bolt gun pressures. I can't remember exactly, but I asked for a .076 or .078 gas hole to use NON adjustable gas blocks with light weight buffer tube weights and spring. Pre covid lots more barrel choices.

The real key on controling gas gun cycling is to use rifle length or even better + 2 inch because of the massive drop in pressure father down the barrel. I found some online testing in ar15's where carbine length gas holes had something like 30,000 psi, mid length was 22,000, and rifle length was clear down to 14,000 psi. The rifle plus 2 inches was 10,000. This is all dependant on powder burn rates. I use CFE and lever revolution to keep the carbon down.

This with my laser illuminator makes for greatest night pig gun for us poor folks that can't buy suppressed with $8000 dollar thermal sights

3 pound trigger and 8 X 32 60mm objective. blue tape over my serial number

 

[budlight]

I just checked my loads. I'm getting 2800' with 165-168's , 26" pipe with Varget not BlC2

I buy CFE in 8 pounders and go to town on my Dillion progressive or TAC for my chronoed 3200 fps 125 grain TNT pig and varmint rounds

BULLET WEIGHT
150 GR. NOS E-TIP
CASE
WINCHESTER
PRIMER
FEDERAL 210M, LARGE RIFLE MATCH

	Manufacturer	Powder		Bullet Diam.	C.O.L		Grs.	Vel. (ft/s)	Pressure		Grs.	Vel. (ft/s)	Pressure
	Starting Load		Maximum Loads
	Hodgdon	BL-C(2)	BUY NOW	0.308"	2.800"		43.7	2,654	47,800 PSI		47.0	2,868	60,100 PSI
	Hodgdon	CFE 223	OUT OF STOCK	0.308"	2.800"		49.0	2,865	52,300 PSI		51.1	2,990	60,400 PSI
	Hodgdon	Varget	BUY NOW	0.308"	2.800"		42.3	2,670	46,700 PSI		46.5C	2,914	60,400 PSI

 

[Noidly1]

My DPMS SASS seems to prefer lighter loads. I know I'm 2-3 grains under max with the Accurate 4064. They print as well as factory target rounds but only at 100-200M. Maybe I ought try loading up>?

PS I FOOLISHLY rran a few thru my M1 Garand in .308. WHOOPS! Those bad boys can double tap with light rounds! Who knew?

How does it like that powder?