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I've been experimenting with a ARP x42 barrel ever since I bought it.
I've shot 55g, 62g, 70g and now 80g ELD-M. I'm shooting the ELD
using 28.9 grains of CFE223. I'm getting 3010fps. Great groups. Is
anyone shooting 80g bullets?
 

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You can usually get the Nosler 80 gr Custom Competition (HPBT) 1000 round bulk box for around $149 at Shooters Pro Shop. I shoot a lot of the 69 and 77 gr in my AR and both are .5 MOA. Got a box of the 80 gr. I plan to use those on a .224 Valkyrie whenever the barrels become available.
 

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I've been experimenting with a ARP x42 barrel ever since I bought it.
I've shot 55g, 62g, 70g and now 80g ELD-M. I'm shooting the ELD
using 28.9 grains of CFE223. I'm getting 3010fps. Great groups. Is
anyone shooting 80g bullets?
I have shot a bunch of 80gr Bergers at about the same speed you are getting with the same powder.. The 80gr Amaxs were blowing up before they hit the target. I guess the ELD fixed that problem.
 

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I had my best luck with the 75 AMAX and cfe223 in the 5.56x42 I had. Shot great out to 703 yards. Never took it any further.

Sent from my SAMSUNG-SM-G870A using Tapatalk
 

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I'm a little late to the party. I've shot the 80gr Nosler CC at 3023fps, 0.478 groups with N540 in the 8 twist. Have some 75gr ELD but haven't loaded them yet.
 

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Need some help here fellows. Got my 5.56x42 gun together first few shots I run through it I thought I was starting at some conservative loads but I’m getting some high pressure signs, cratered primers and slight ejector marks on the case head. Loads I tried are Sierra 55gr gamekings over 31gr. LeveR, 28gr. H4895, and 30gr. CFE 223. Is this normal? I was thinking that everything I have read that I should be on the lower end of the load spectrum. Thoughts?
 

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Need some help here fellows. Got my 5.56x42 gun together first few shots I run through it I thought I was starting at some conservative loads but I’m getting some high pressure signs, cratered primers and slight ejector marks on the case head. Loads I tried are Sierra 55gr gamekings over 31gr. LeveR, 28gr. H4895, and 30gr. CFE 223. Is this normal? I was thinking that everything I have read that I should be on the lower end of the load spectrum. Thoughts?
have not had much time with 5.56x42, I use reloader 16 in my 270win cci 34 primers have found a load for 5.56x42 27.4gr rl16 getting 2950-2980 with good groups 80gr berger or 80elds powder is non sensitive to temp no pressure sighs with Hornady case #34 primes 2.260 berger 2.30 elds.
 

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have not had much time with 5.56x42, I use reloader 16 in my 270win cci 34 primers have found a load for 5.56x42 27.4gr rl16 getting 2950-2980 with good groups 80gr berger or 80elds powder is non sensitive to temp no pressure sighs with Hornady case #34 primes 2.260 berger 2.30 elds.
#41 primers on this not #34
 

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Have found a very excellent load for my 5.56x42, 28.3gr rl16 85.5 berger long-range bc 0.524 average 2925fps 1/4" groups very happy with this load shot 6" group at 860 yards with no fine tuning of bullet seating depth. loaded long at 2.335 cut out mag 15 thousands from max.
 

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Have found a very excellent load for my 5.56x42, 28.3gr rl16 85.5 berger long-range bc 0.524 average 2925fps 1/4" groups very happy with this load shot 6" group at 860 yards with no fine tuning of bullet seating depth. loaded long at 2.335 cut out mag 15 thousands from max.
Nice! Several have asked about the 85 but I wasn't sure it would stabilize, thanks
 

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so the 224 valkyrie die held high with imperial sizing wax has been crushing the shoulders on the s&b produced hornady primed brass i have on hand. is there another full length die, perhaps a 6mm or .257 die, that i could use as an intermediary or should i just bite the bullet and buy more redding bushings? the valkyrie die successfully necked down the fired 6.8 hornady brass i tried, but i don't want to invest the time in prepping 2x fired 6.8 brass (warm loads). thanks.
 

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so the 224 valkyrie die held high with imperial sizing wax has been crushing the shoulders on the s&b produced hornady primed brass i have on hand. is there another full length die, perhaps a 6mm or .257 die, that i could use as an intermediary or should i just bite the bullet and buy more redding bushings? the valkyrie die successfully necked down the fired 6.8 hornady brass i tried, but i don't want to invest the time in prepping 2x fired 6.8 brass (warm loads). thanks.
I have had no problem with Hornady new brass sizes excellent for me with 224 valkyie die
 

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so the 224 valkyrie die held high with imperial sizing wax has been crushing the shoulders on the s&b produced hornady primed brass i have on hand. is there another full length die, perhaps a 6mm or .257 die, that i could use as an intermediary or should i just bite the bullet and buy more redding bushings? the valkyrie die successfully necked down the fired 6.8 hornady brass i tried, but i don't want to invest the time in prepping 2x fired 6.8 brass (warm loads). thanks.
Did you try sizing half the neck then backing off a little before you size the lower half? You could also polish the corner at the shoulder to neck junction in the die. IME fired brass always size easier than soft new brass.
 
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