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WC 20 barrel 1/8, Nosler brass, Nosler 120 BT, TAC 27.5 gr., OAL 2.255, 2400 Velocity, = <.5 @ 100 yd. consistently. bobke Wrote:Kind of curious why Nosler 100/120 gr Ballistic Tips haven't shown up on the possibles list. Have had some very good results with TAC and 8208, as well as others I've seen post here, but they are pricey relative to 123 Amax. Other factor I seem to remember is that whatever you shoot behind Noslers will never group as well as the Noslers because of some softer copper wash left behind by the BT's. Any substance to same?
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From what I gather from reading all of this, AR Comp is the up and coming powder some of you are using. I just picked up 5 pounds of it yesterday, ordered 200 Hornady 123 SST's. Also I have a couple hundred of Hornady brass and 100 federal brass to work with.
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GregS Wrote:From what I gather from reading all of this, AR Comp is the up and coming powder some of you are using. I just picked up 5 pounds of it yesterday, ordered 200 Hornady 123 SST's. Also I have a couple hundred of Hornady brass and 100 federal brass to work with.
And it seems like everyone is finding performance in the 27.6-27.8 grain range.
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A5BLASTER Wrote:Hornady case
Ar-comp at 28 grains
Cci450
120 gold dot at 2.290 coal
No crimp
Straight money in my 16 inch and 12.5 inch grendels.
What mags are you using for 2.290 COAL?
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Grendelshooter Wrote:And it seems like everyone is finding performance in the 27.6-27.8 grain range.
I ordered 200 starline brass. they are thicker and hold less volume of powder, what is a good starting load with the 123 sst's?
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Greg
As youre starting essentially from the beginning, would suggest not commingling your brass, as Hornady will weigh around 110-120gr primed, depending on if from different lots, Federal is generally a bit heavier, and you already know the Starline is heavy. If you want to optimize your results, Id weight sort them and keep them that way. A 10% difference in brass weight will definitely impact your load workups.
That said, am a big fan of AR Comp in Grendel. Check up on an OCW work up from Dan Newberry, run that starting from 26-26.5gr and see where you find a common POI on target with several different charge weights and then work on CBTO to determine optimal seating depth. A chronograph and proper ogive measuring tools will make this process much more meaningful, and repeatable.
Youll find lots of resources here, and Newberry is an excellent general reference.
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I have set the Hornady and Federal brass aside. I'll only be using the Starline brass for now as I work out my loads. Looks like about 26 gr. should be the starting point with AR Comp. I'll be buying a chronograph soon to help me with my load development. Thanks for the in put.
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Clays23 Wrote:Got a hot load in my ruger American 100 grain Nosler BT 31 grains 8208 Remington 7 1/2 primers 2.260 oal 2859 FPS
Clays,
How did it group for you?
Thanks
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Cajuntransplant Wrote:I've switched back to the Hornady 123ELDM rounds loaded over ARComp. Still the most consistent and best shooting. Averaging around 2520fps from supressed 20" barrel and can hold 1/2 - 3/4 MOA out to 600yds. Easy to find components too. I liked the 107TMKs over benchmark powder but the 123ELDM just give a little more thump on targets at distance. The Gen2 PST 5-20 has been top notch as well for the Grendel. Very happy and hoping I can get out this winter for some critter control.
Sorry if you posted it somewhere but I can't find it. What was your load data for the ARComp with 123ELDM? I have both of these, powder and bullet, and want to give this a try to see how it works in my Grendel.
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looking to find a super accurate load that will be accurate in my BHW type I 20" barrel and my Howa mini 20" barrel
Tried lots of loads with many powders and I finally got there
123 ELD Match
Lapua case
cci std primer
28.3 Gr 8208
best 5 shot groups @ 100 yd .248 gas gun and .437 mini
haven't chronoed yet
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06-02-2020, 03:02 PM
(This post was last modified: 06-02-2020, 04:53 PM by Hollis.)
Jackd Wrote:looking to find a super accurate load that will be accurate in my BHW type I 20" barrel and my Howa mini 20" barrel
Tried lots of loads with many powders and I finally got there
123 ELD Match
Lapua case
cci std primer
28.3 Gr 8208
best 5 shot groups @ 100 yd .248 gas gun and .437 mini
haven't chronoed yet
That's what is recommended on the first post +.3 grains. That's what I used to start my load development for this and got good groups starting at 28gr and then moving up to 29gr where it shot the best group. I have some ARComp and am wanting to try that. Does anyone have load recommendations for 123 ELD Match for ARComp?
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I found somewhere that 27.5-27.6 gr ARComp should work for 123gr ELD-Match. Let me try this and see how it works!
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Here comes some load data from Sweden. Powders are almost excusive Vihtavuori, brass is Lapua and Hornady. They have similar case volume (hornady is 0.1-0.2 grain larger), I see no reason they cant be mingled.
Primer: Mostly CCI 400. Had some Remington 6½ BR, they tend to give 30-50 FPS more velocity depending on load.
Hornady SST 123 grain
COAL 57.5mm
Primer: CCI 400
Powder: N133, 26.0 Grain
Precision: 0.7-1" at 100 meters
Velocity at barrel: 739msec / 2425 fps avrage over 5 shots with SD of 2 msec.
Nosler BT 120 grain
Coal: 57.8mm
Primer: CCI 400
Powder: N133, 26.0 grain
Precision: Great, had 5 shots on 0.5" at 100 meters but most avrage around 1". Have not had favorable conditions (windy). But performs good, 3 shots will generaly touch.
Velocity: 777 msec / 2549 over 5 shots SD 4msec
Nosler Partition 140 grain
COAL: 58.5 mm
Primer: CCI 400
Powder: N540 28.0 grain
Velocity: 738 msec / 2421 fps
Precision: good, sub moa.
Used on Deer (Roe buck), shot at around 50m, passthrough with exit wound around 6cm. Little meat damage, so a great velocity for small (to be eaten) animals on ranges under 200 meters.
Woodleigh 160 grain Roundnose
COAL: 56.5mm
Primer: Remington 6½ BR
Powder: N540, 26.0 gr
Precision: 3 shots touched, 100 meters. Reliable groups.
Velocity: 655 mps / 2149 fps
V-max 95
COAL: 56.3mm
Primer: Rem 6½ BR
Powder: N133 28.5 grain
Precision: Sub moa, had one 0.5" and some larger. mostly wind. Can probably do better
Velocity: 840 mps / 2756 fps. This i think i can get to 2800-2850 FPS with no problem.
Esp. if use N530.
Hornady ELD-M 140
Coal: 57.5mm
Primer: Rem 6½ BR
Powder: N135, 23.5 grain
Velocity: 625 mps / 2051 fps
Precision: Best performing bullet/load i have for ranges 100-200. 5 x 5 shot groups avraged 17mm! (13-19). single groups now and then do 0.25 MOA, but thats as much luck for me. to much drop at 500m to be used (tried to), 250-290 cm drop or more, lacked adjustment in turret to make use of it.
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jmkhenka, are you using a bolt rifle? Reason I am curious is that 6-1/2's are not normally recommended for anything much over .22 Hornet, pressure wise and floating firing pin wise.
I guess if you're not getting excessive flattening or piercing, then it's working for you.
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You are careful with everything else but don't mind mixing brass. It's not just about case volume. There will be different neck tension and Lapua will be thicker at the neck. You could at least keep the brands separated in your ammo box e.g. Lapua to the right, Hornady to the left.
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I dont mix brass in specific loads, but i have not seen any velocity or pressure difference. I dont expect to have 5 shots with mixed brass group nice, but one or the other wont make much difference. There is so many other factors that can affect accuracy that I have to improve on.
Its a howa mini bolt action. I have seen no issues with primers, and to be honest most if not all primer issues are related to excessive headspace. A properly headspaced round wont show much primer indication before you have other signs. Things that are visible on my rifle is ejector marks on high loads, and then im probably quite high.
The 6½ BR worked really fine, there has been some problems with delivery in my local shop due to covid, but CCI400 works nice and if there was something i would try its CCI 450 but they dont stock it here.
How about federal gold medal match? Or should i just keep going cci 400?
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I would use 400's before 6-1/2's, but you say you have no issues, so you might as well use what's working for you.
If you can get some, the GMM might work very well in your bolt rifle, just have to try them and see.
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I've been one of many who's looked for the "good load" for this round for months. I'm no closer, so I'm thankful for all the contributions everyone has made to the effort. I am very puzzled on using a magnum primer for such a small case. My old habits were magnum primers only for large volume cases, or very cold temperatures.
Anyone care to take a stab as to why such a small case is doing better with the mags than say the bench rest primers?
Thanks again to all,
Gos
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Gos Wrote:I've been one of many who's looked for the "good load" for this round for months. I'm no closer, so I'm thankful for all the contributions everyone has made to the effort. I am very puzzled on using a magnum primer for such a small case. My old habits were magnum primers only for large volume cases, or very cold temperatures.
Anyone care to take a stab as to why such a small case is doing better with the mags than say the bench rest primers?
Thanks again to all,
Gos
Short version CCI 450 are safer to shoot in a semi-auto, good for consistency (low SD's), when shooting in cold weather they do better than non-magnums (good for hunters). I'm a recent convert to the CCI 450's as well. Try em, you'll like em!
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Lemonaid Wrote:Short version CCI 450 are safer to shoot in a semi-auto, good for consistency (low SD's), when shooting in cold weather they do better than non-magnums (good for hunters). I'm a recent convert to the CCI 450's as well. Try em, you'll like em!
Will do.
My efforts today with 223CFE produced another 4"+ group at 100 yards, or as my son and I call it "improved cylinder".
On to the next round of powder!
Stay Safe all,
Gos
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