Request for Recipe (.308), also info to share

[rksimple]

Yeah.... that's the reason why I want to stay @ 43gr w/ 2700fps (.8-1MOA).... but seemingly.... the groups w/ 45gr @ 2800fps is better....

And... YES, I think my factory chamber is large and long... I think I can seat to 2.9 and still hasn't hit the land....

I was testing @ 55-65deg this past wkend....

How many groups of how many rounds did you fire? Enough to be statistically relevant?

[ar15barrels]

PS. how much faster will they be... when it is 100deg..... when I clocked 2800 @ 65deg?

Quickload simulations...
175 SMK
2.800 OAL
24" barrel

65 degrees
43gr RL15
2610 FPS
51605 PSI
45gr RL15
2723 FPS
59478 PSI

100 degrees
43gr RL15
2655 FPS
55033 PSI
45gr RL15
2766 FPS
63420 PSI

[Jicko]

I will work on my loads in the 43gr-ish range. Thanks Randall, 45gr-ish just look too dangerous.

[Darklyte27]

what recipe are you using now?

[Jicko]

what recipe are you using now?

Lapua Brass
175 SMK
FED210M
RL15 43.0gr
COAL: 2.85

~ 2700fps

[Darklyte27]

thanks,

how come you are using federal primers?
I only have CCI #34s right now, is this too much of a primer for these kind of loads?
Should I use benchrest primers? standard?

[Jicko]

thanks,

how come you are using federal primers?
I only have CCI #34s right now, is this too much of a primer for these kind of loads?
Should I use benchrest primers? standard?

FED210M produced the tightest MV ES/SD for me.

#34 is mil primers, designed for semi-automatic... if you got nothing else, sure you CAN use it..... but it would be of your best interest to get like all different primers and just try them out urself.... IF you are trying to me "precision loads".....

WLR seems to be good to me too, I am planning to do another round of testings with primers soon....

In my previous experiments, FED210 is along the line with CCI #200, FED210M is along the line with CCI #BR2..... and the match-grade/BR-grade is 50% tighter than the regular.....

[Darklyte27]

Ordered 500 rds of the SMK 175s from midway, its on sale! 133$ per 500

[crowbar]

168 SMK ?

Can anyone explain why both 175 SMK and 155 Scenar apparently are better suited for longer ranges out to 1K yards than the 168 SMK? I'm assuming this is because they both are more easily loaded to stay supersonic at 1K yds, but what confuses me is that the 168 SMK is obviously between the weights of the 175 and the 155, so what makes it harder to keep that bullet supersonic out to 1K?

I believe the Sierra 168 was originally designed (late 50's ?) for 300 meter shooting and was first called the "International". Match and service rifle shooters found it hammered out to 600 yards, and I think it will do well out to ~850 yards or so. After that it goes transonic and, more often than not, enters the 1,000 yard target broadside; when it manages to connect from the long line... Maybe a 300 Win mag could push it fast enough, but there are better choices for > 600 yards.

As for powders, I've only worn out half as many Palma barrels as another8 in the last three years, but Varget is the way to go. I have shot the same load (47.0 Varget, 155SMK, 210M, Win brass) from 17 degrees to near 105 and have no pressure or velocity concerns. Besides, Varget is less expensive than RL17....

I used my trusty Brown & Sharpe micrometer to measure diameters of the large rifle primers I have on hand and found the following:
CCI 200: .2106, WLR: .2100, 210M: .2105, and some old Winchester No. 115: .2104. I'm tld the Russian / Wolf primers give excellent results and fit snugly. I had to quit using WLR's for Palma because they got too loose, too fast. The mic showed me why. I use the WLR's in my .30-30 now.

[pottymouth310]

I know this has probably been asked many times before but my friends keep asking me this and I don't have a logical answer for them:

"Whats the difference between .308 & 7.62x51 Nato" I heard they're the same but you shouldn't shoot both out of the same rilfe?
confusing???

[ar15barrels]

"Whats the difference between .308 & 7.62x51 Nato" I heard they're the same but you shouldn't shoot both out of the same rilfe?

308 is higher pressure.

[slappomatt]

Ok, thats alot of info to sort through. looks like good stuff though. what about this.

I have a saiga 308 and I'm building a AR-10T soon. I also have several friends who have AR-10T's in the works and a couple freinds with M1A socom's.

what would you recomend for us for plinking ammo.

#1 concern would be cost.
#2 would be accuracy to maybe 200 yrds
#3 would be low recoil.

also being as I also load .223 I would like to stick to ramshot TAC as powder as it seems to be a decent all around powder.

any idea's?

[Whitesmoke]

Ok, thats alot of info to sort through. looks like good stuff though. what about this.

I have a saiga 308 and I'm building a AR-10T soon. I also have several friends who have AR-10T's in the works and a couple freinds with M1A socom's.

what would you recomend for us for plinking ammo.

#1 concern would be cost.
#2 would be accuracy to maybe 200 yrds
#3 would be low recoil.

also being as I also load .223 I would like to stick to ramshot TAC as powder as it seems to be a decent all around powder.

any idea's?

Military brass...any bullet is fine at 200 yards (pulled military bullets, or bulk 150 gr bullets). TAC should be fine....start at min loads and work up.

[Darklyte27]

just for the record you guys dont crimp match type ammo right?
ive heard no crimp = better accuracy.

[rksimple]

Don't crimp anything.