User Panel
User Panel
User Panel
TX, USA
|
Posted: 3/23/2017 12:59:52 AM EDT
[Last Edit: Aby001]
[#1]
Got a question for everyone that loads 300 blk subs, why can't I get the preferred powder to shoot decent groups?
My Seekins 8" 1:7 barrel shoots any bullet I load great, sub moa on most cases. When I switch to Accurate 1680 it's horrible regardless of bullet, coal, powder charge, or primer and case. I tried to make it work on my third attempt today loading 10 rounds of each charge and testing in the back pasture. They are all over the place with 208 ELD match, 208 match, and Rainer wedge 180's. I tried everything from 10.4-11.2 with nothing but shotgun pattern groups. When I shoot 7.8-8.1(my proffered charge) of Lil Gun it shoots lights out with any of those same bullets. I just don't get it as everyone reccomends 1680 from the forum to my local reloading supply house, but it's just not working out for me. It's not too big of a deal I just have a pound of powder that I have no use for as of now. Thanks in advance for any ideas, also these are formed annealed cases as well as commercial 300 blk cases that were annealed also. |
|
|
WI, USA
|
Posted: 3/23/2017 1:50:57 AM EDT
[#2]
I'm loading 5744.
When the 300 craze came out, its all I could grab for subs. I'm loading that at 10.6 out of my 8.5 with 210gn hornady match and getting good groups. Have you been able to chrono your loads? Do you have room to bump it a little? |
|
|
AL, USA
|
Posted: 3/23/2017 2:31:44 AM EDT
[#3]
Quote HistoryOriginally Posted By Aby001:
Got a question for everyone that loads 300 blk subs, why can't I get the preferred powder to shoot decent groups? My Seekins 8" 1:7 barrel shoots any bullet I load great, sub moa on most cases. When I switch to Accurate 1680 it's horrible regardless of bullet, coal, powder charge, or primer and case. I tried to make it work on my third attempt today loading 10 rounds of each charge and testing in the back pasture. They are all over the place with 208 ELD match, 208 match, and Rainer wedge 180's. I tried everything from 10.4-11.2 with nothing but shotgun pattern groups. When I shoot 7.8-8.1(my proffered charge) of Lil Gun it shoots lights out with any of those same bullets. I just don't get it as everyone reccomends 1680 from the forum to my local reloading supply house, but it's just not working out for me. It's not too big of a deal I just have a pound of powder that I have no use for as of now. Thanks in advance for any ideas, also these are formed annealed cases as well as commercial 300 blk cases that were annealed also. |
|
|
TX, USA
|
Posted: 3/23/2017 8:01:04 PM EDT
[Last Edit: Aby001]
[#4]
No chrono but I start at the highest load which is always supersonic and work down. I haven't got below. 10.3 of 1680 on either the Rainer 180's or either 208 bullets. I suppose I will work down a bit more and see what happens. Honestly I'm more than happy with my Lil Gun subsonic load, but if I can match the accuracy with 1680 then I can load about 800 more rounds with that pound of powder.
Chrono is on my to do list as I'm working on 260 Remington loads for a Tikka now. I know I'll need for to get accurate dope for that rifle. |
|
|
TX, USA
|
Posted: 3/24/2017 3:22:11 PM EDT
[#5]
Is anyone still shooting through the 8.5" CMMG WASP barrels from a while back and have a good pet load for 110gr Barnes and H110? I'm not getting any real good precision out of this bullet at 19.0grs.
|
|
|
|
Posted: 3/24/2017 4:24:21 PM EDT
[#6]
Quote HistoryOriginally Posted By Aby001:
Got a question for everyone that loads 300 blk subs, why can't I get the preferred powder to shoot decent groups? My Seekins 8" 1:7 barrel shoots any bullet I load great, sub moa on most cases. When I switch to Accurate 1680 it's horrible regardless of bullet, coal, powder charge, or primer and case. I tried to make it work on my third attempt today loading 10 rounds of each charge and testing in the back pasture. They are all over the place with 208 ELD match, 208 match, and Rainer wedge 180's. I tried everything from 10.4-11.2 with nothing but shotgun pattern groups. When I shoot 7.8-8.1(my proffered charge) of Lil Gun it shoots lights out with any of those same bullets. I just don't get it as everyone reccomends 1680 from the forum to my local reloading supply house, but it's just not working out for me. It's not too big of a deal I just have a pound of powder that I have no use for as of now. Thanks in advance for any ideas, also these are formed annealed cases as well as commercial 300 blk cases that were annealed also. However, I would not be too concerned as 1680 in subs runs rather dirty. It has been the most accurate powder for some of my sub loads but I find 4227 runs much cleaner, is reasonably accurate and is easier to find. Last weekend I ran through 475 rds of 245 gr coated cast boolits from MBC without one FTF using 7.7 gr of 4227 out of an 8" bbl. I don't think I could have pulled that off with 1680. |
|
|
|
|
Posted: 3/24/2017 5:06:35 PM EDT
[#7]
Quote HistoryOriginally Posted By Boosted98gsx:
Is anyone still shooting through the 8.5" CMMG WASP barrels from a while back and have a good pet load for 110gr Barnes and H110? I'm not getting any real good precision out of this bullet at 19.0grs. 
|
|
|
|
|
Posted: 3/24/2017 6:30:05 PM EDT
[#8]
Perfect. Glad to see the h110 data. Just so happens to have an abundance for use in the 458socom.
|
|
|
|
|
Posted: 3/24/2017 10:41:44 PM EDT
[#9]
Took the sbr out yesterday to chrono some loads and this is what Im finding at this point.
Keep in mind the 10' number's and the 14.5" numbers are NOT fired on the same day Barnes 110gr Tac-TX Factory loads 10" = 2185 fps 14.5" = 2317 fps Loss of 136 fps in sbr -------------------------------- Barnes 110gr Tac-TX 20.0 gr H110 10' = 2245 14.5" =2364 Loss of 119 fps in sbr ---------------------------------- Hornady 208gr ELD Match 11.2 gr A1680 10" = 953 fps 14.5" = 957 fps Only lost 4 fps with the 10" barrel. The SD numbers suck with the 208gr. I may have to work up/down and see about getting better numbers. Not sure what a can will do to the numbers. |
|
|
|
TX, USA
|
Posted: 3/25/2017 12:03:58 AM EDT
[#10]
Quote HistoryOriginally Posted By mybronco2:
Took the sbr out yesterday to chrono some loads and this is what Im finding at this point. Keep in mind the 10' number's and the 14.5" numbers are NOT fired on the same day Barnes 110gr Tac-TX Factory loads 10" = 2185 fps 14.5" = 2317 fps Loss of 136 fps in sbr -------------------------------- Barnes 110gr Tac-TX 20.0 gr H110 10' = 2245 14.5" =2364 Loss of 119 fps in sbr ---------------------------------- Hornady 208gr ELD Match 11.2 gr A1680 10" = 953 fps 14.5" = 957 fps Only lost 4 fps with the 10" barrel. The SD numbers suck with the 208gr. I may have to work up/down and see about getting better numbers. Not sure what a can will do to the numbers. I've been thinking of putting together a 1:8 barreled upper just for supers. If I can get good accuracy with handloads out of my 1:7 8" Seekins barrel I may just sell off my stash or use it strictly for critters under 50 yards. |
|
|
|
Posted: 3/25/2017 4:57:27 PM EDT
[#11]
Both are a 1x7 twist BA barrels.
I havent shot the Barnes at 100yds with the 10" sbr, but the 14.5" barrel shoots them at about 1.5 moa. The sbr is also topped off with a red dot. I tried LilGun, and it was UGLY with the 14.5" |
|
|
|
|
Posted: 3/26/2017 12:39:14 PM EDT
[#12]
Quote HistoryOriginally Posted By mybronco2:
Both are a 1x7 twist BA barrels. I havent shot the Barnes at 100yds with the 10" sbr, but the 14.5" barrel shoots them at about 1.5 moa. The sbr is also topped off with a red dot. I tried LilGun, and it was UGLY with the 14.5" |
|
|
|
|
Posted: 3/26/2017 5:29:37 PM EDT
[#13]
My experience with Lil' Gun has all been with supers, and they work fine. I've run bullets from 110 grains to 150 grains with Lil' Gun and had extremely good results.
I've seen plenty of people saying that they can get subs to work with H110 and Lil' Gun, but I've also seen plenty of loading data (as in from powder companies, such as Accurate's data) that makes it look like it's better to use a different class of powder for subs. I haven't dipped my toes into the subsonic loading pool yet, but I'm paying attention for later. |
|
|
|
|
Posted: 3/26/2017 10:34:57 PM EDT
[#14]
I load supers only. H-110 up to 135 grs (Sierra MK).
147-150 grs and up I use Lil'Gun. |
|
|
|
|
Posted: 3/27/2017 9:12:25 PM EDT
[#15]
Can anyone tell me about cast bullets in 300 blackout ARs? MidwayUSA has a good deal on lead bullets, 238 grains, BH 15 and I was wondering if you fine folks could speak to their suitability for a gas operated system at subsonic velocities? Thanks guys. I'm slowly getting my feet wet with the Blackout, but with my SBR paperwork coming in the next month (fingers crossed) I will be shooting it much more. Thanks.
|
|
|
|
|
Posted: 5/12/2017 9:17:48 PM EDT
[#16]
So I was thinking, I know that when you cut down 223 brass and before you size it you need to chamfer and debur, would wet tumbling with SS media be enough to knock the edge down to skip the chamfer/debur?
|
|
|
|
TX, USA
|
Posted: 5/12/2017 9:35:01 PM EDT
[#17]
Quote HistoryOriginally Posted By MSUbulldog21:
So I was thinking, I know that when you cut down 223 brass and before you size it you need to chamfer and debur, would wet tumbling with SS media be enough to knock the edge down to skip the chamfer/debur? If I have to trim a lot off a case I chamfer and deburr, if I don't take off too much brass when trimming I throw them in the tumbler and the edges come out nice and smooth. YMMV |
|
|
|
Posted: 5/12/2017 10:01:17 PM EDT
[Last Edit: dryflash3]
[#18]
Quote HistoryOriginally Posted By MSUbulldog21:
So I was thinking, I know that when you cut down 223 brass and before you size it you need to chamfer and debur, would wet tumbling with SS media be enough to knock the edge down to skip the chamfer/debur? For best results, after deburring and before forming the neck, anneal the shoulder. |
|
|
|
|
Posted: 5/12/2017 10:08:59 PM EDT
[#19]
Quote HistoryOriginally Posted By Aby001:
If your trimmer does not leave too bad of a burr then yes the pins work. Best bet is to try a small batch and see. If I have to trim a lot off a case I chamfer and deburr, if I don't take off too much brass when trimming I throw them in the tumbler and the edges come out nice and smooth. YMMV |
|
|
|
|
Posted: 5/12/2017 10:10:06 PM EDT
[#20]
Quote HistoryOriginally Posted By dryflash3:
http://i250.photobucket.com/albums/gg272/dryflash3/Moved%20Pics/bd1bb344-e39f-410e-89c9-76182d1dd110_zps94ee9acc.jpg For best results, after deburring and before forming the neck, anneal the shoulder. |
|
|
|
|
Posted: 5/12/2017 10:18:58 PM EDT
[#21]
Quote HistoryOriginally Posted By MSUbulldog21:
My trimmer in this instance will be a mini chop saw, gonna do a small batch and see I suppose I highly recommend dryflash3's Low Budget Annealing process. It's pretty easy to do, and doesn't cost a fortune to set up. |
|
|
|
|
Posted: 5/12/2017 10:27:48 PM EDT
[#22]
Quote HistoryOriginally Posted By GHPorter:
From my own experience with a mini chop saw (Harbor Freight), you're going to need to debur and chamfer. If the blade is sharp and you don't rush, it won't b much of a hassle. I just used my RCBS debur/chamfer tool and gave each case a twist on each end. I highly recommend dryflash3's Low Budget Annealing process. It's pretty easy to do, and doesn't cost a fortune to set up. 
|
|
|
|
SC, USA
|
Posted: 5/13/2017 9:46:14 AM EDT
[#23]
Quote HistoryOriginally Posted By TacticalGarand44:
Can anyone tell me about cast bullets in 300 blackout ARs? MidwayUSA has a good deal on lead bullets, 238 grains, BH 15 and I was wondering if you fine folks could speak to their suitability for a gas operated system at subsonic velocities? Thanks guys. I'm slowly getting my feet wet with the Blackout, but with my SBR paperwork coming in the next month (fingers crossed) I will be shooting it much more. Thanks. I've tried both powder coating and the Hi-Tek coating with a Lee sizer at .309". Polishing the sizer improved its operation BTW. Once I shoot all the NOE stuff I'll be using projectiles cast from my Lee mold, which I've modded to remove the boat tail. I believe I have most things sorted out on sizing and coating now I'm just fine tuning the crimp and the actual powder weight. I've been pleased with 4227 & 1680 for jacketed bullets but the same load is too loud with the cast stuff. I test fired some loaded with 4227 and 1680 both at 9.0 grains and function was okay but I feel as if I could go lower. So question of the day is - where are you guys at with these powders and cast & coated 230 grainers? For the record its a 9" barreled upper. I know you're gonna ask and the answer is NO I have not chrono'ed these latest loads as my chrono developed a hole in it.
|
|
|
|
Posted: 5/13/2017 8:51:00 PM EDT
[#24]
Quote HistoryOriginally Posted By MSUbulldog21:
I think I already have one of those cheap electric screwdrivers. I'm gonna be ordering a chop saw and a fixture in the next few weeks when I get paid again, will add a torch and some liquid to the list. I could use my dads torch but I don't think he would want me using all his acetylene/oxygen for this |
|
|
|
|
Posted: 5/13/2017 10:36:16 PM EDT
[#25]
Quote HistoryOriginally Posted By GHPorter:
I own, and recommend THIS Blackout cutting jig from Zep Precision Machines. I have used mine for lots and lots of cases with never a single problem. |
|
|
|
WI, USA
|
Posted: 5/15/2017 11:49:26 PM EDT
[#26]
Quote HistoryOriginally Posted By MSUbulldog21:
Thanks, I was looking at the squirrel daddy one |
|
|
|
Posted: 5/18/2017 12:34:09 PM EDT
[Last Edit: Cowbell]
[#27]
What buffers are yall running?
I have a 10.3" barrel, will mostly be shooting some 150gr FMJ, with some 125's for hunting and some 245's on occasion. ETA: will be using a can almost all the time |
|
|
|
|
Posted: 5/18/2017 9:45:18 PM EDT
[Last Edit: grimhollow]
[#28]
Quote HistoryOriginally Posted By MSUbulldog21:
What buffers are yall running? I have a 10.3" barrel, will mostly be shooting some 150gr FMJ, with some 125's for hunting and some 245's on occasion. ETA: will be using a can almost all the time |
|
|
|
|
Posted: 5/19/2017 12:43:49 AM EDT
[#29]
Im running a "H" buffer with a 10" barrel.
Never a issue, and its spitting out the brass to about a 3:30 position. It's only been 11 months, so I havent got the can yet,  but I expect zero issues.
|
|
|
|
|
Posted: 5/20/2017 3:40:25 PM EDT
[#30]
Quote HistoryOriginally Posted By mybronco2:
Went and sighted in the SBR today. Shooting 208gr ELD Match over 11.2 gr of A1680 |
|
|
|
|
Posted: 5/20/2017 5:01:17 PM EDT
[#31]
My thought was I can get 100 ELD's and 100 55gr SP, for the cost of 100, 220gr SMK.
Kinda like free 55gr sp's for life! 
|
|
|
|
|
Posted: 5/22/2017 12:54:53 PM EDT
[Last Edit: Cowbell]
[#32]
Edited.
|
|
|
|
|
Posted: 5/22/2017 1:19:19 PM EDT
[Last Edit: AS556]
[#33]
Quote HistoryOriginally Posted By MSUbulldog21:
What buffers are yall running? I have a 10.3" barrel, will mostly be shooting some 150gr FMJ, with some 125's for hunting and some 245's on occasion. ETA: will be using a can almost all the time 10" barrel supers only. No can. Might try H2 with a can. |
|
|
|
|
Posted: 5/22/2017 1:46:31 PM EDT
[#34]
Quote HistoryOriginally Posted By MSUbulldog21:
Anyone heard anything about the release of the new 300blk PMAG? |
|
|
|
|
Posted: 5/22/2017 1:49:04 PM EDT
[Last Edit: dryflash3]
[#35]
Quote HistoryOriginally Posted By MSUbulldog21:
What buffers are yall running? I have a 10.3" barrel, will mostly be shooting some 150gr FMJ, with some 125's for hunting and some 245's on occasion. ETA: will be using a can almost all the time Mags (AR 15 Mags) and gas blocks (AR Variants) belong in their correct forums. Next off topic post gets deleted. I would rather not go there. |
|
|
|
|
Posted: 5/22/2017 2:04:07 PM EDT
[#36]
Quote HistoryOriginally Posted By dryflash3:
This is the Reloading Forum, please don't get off topic. Mags (AR 15 Mags) and gas blocks (AR Variants) belong in their correct forums. Next off topic post gets deleted. I would rather not go there. |
|
|
|
|
Posted: 6/15/2017 8:55:06 PM EDT
[#37]
|
|
|
|
|
Posted: 7/3/2017 12:16:32 PM EDT
[#38]
Brown Santa came today from midway, I'm loading 125 grain nosler ballistic tips over 18.5 grains of H110 in the new starline brass with CCI #450 magnum primers. This is a preliminary test for the bullets just to see what I'm working with. I will post results later this week hopefully
 Attached File |
|
|
|
|
Posted: 7/3/2017 2:12:33 PM EDT
[#39]
That should be a good shooting load.
|
|
|
|
|
Posted: 7/3/2017 4:44:17 PM EDT
[#40]
Quote HistoryOriginally Posted By dryflash3:
That should be a good shooting load. The grouping wasn't that great, about 2.5" @ 100yds, in all my excitement I forgot to chamfer/debur the new brass 
Velocity was good though, 5 shot group, 10.3" Ballistic Advantage Hanson barrel: 2222 2154 2164 2164 2196 Avg - 2180 ES - 68 SD - 28 I am going to make some new loads @ 18.5, 18.6, 18.7, 18.8 and try again. |
|
|
|
|
Posted: 7/3/2017 4:56:58 PM EDT
[#41]
I normally don't crimp in 223, but I found a light crimp with a Lee FCD in 300 blk improved my groups.
|
|
|
|
|
Posted: 7/3/2017 5:01:22 PM EDT
[#42]
Quote HistoryOriginally Posted By dryflash3:
I normally don't crimp in 223, but I found a light crimp with a Lee FCD in 300 blk improved my groups. |
|
|
|
|
Posted: 7/3/2017 5:14:50 PM EDT
[#43]
What I call a light crimp;
Look down at the collet and watch the 4 slots. When your crimping I stop when the slots close half way. Good luck |
|
|
|
|
Posted: 7/22/2017 1:05:10 PM EDT
[Last Edit: Cowbell]
[#44]
I think I'm on the right track with 18.0 gr of H110 with the 125 gr Nosler BT set to 2.070". I'm not ready to mass produce it just yet, still want to play around with charge weight and seating depth but it's nice to see some sub-MOA results.
ETA: Yes I know that should be 0.92"
|
|
|
|
|
Posted: 7/22/2017 1:27:31 PM EDT
[#45]
.992" is the correct reading.
|
|
|
|
|
Posted: 7/22/2017 1:31:41 PM EDT
[#46]
Quote HistoryOriginally Posted By coyote3:
.992" is the correct reading. |
|
|
|
WA, USA
|
Posted: 7/22/2017 2:41:27 PM EDT
[#47]
Anyone loading any of the 220 nosler bt's with 1680? Theres a little load info out there but just wondering if you guys have any pet loads? Also wondering if the bullet performs well enough for deer out to 100yards.
|
|
|
|
Posted: 7/24/2017 3:40:47 PM EDT
[#48]
Quote HistoryOriginally Posted By MSUbulldog21:
I think I'm on the right track with 18.0 gr of H110 with the 125 gr Nosler BT set to 2.070". I'm not ready to mass produce it just yet, still want to play around with charge weight and seating depth but it's nice to see some sub-MOA results. https://i.imgur.com/zXFUWdW.jpg ETA: Yes I know that should be 0.92" I am at 17.6 gr of H110 useing 125 gr Speer TNT Varmint Bullets out of the 8.5 inch barrel i get around 6 moa out of a 16 inch it tightens up to around 3 moa. I may have to try some BT bullets |
|
|
|
|
Posted: 7/24/2017 4:00:29 PM EDT
[Last Edit: Cowbell]
[#49]
Quote HistoryOriginally Posted By mangyrat:
Nice results. I am at 17.6 gr of H110 useing 125 gr Speer TNT Varmint Bullets out of the 8.5 inch barrel i get around 6 moa out of a 16 inch it tightens up to around 3 moa. I may have to try some BT bullets ETA: And hopefully get some chrono data. |
|
|
|
|
Posted: 7/24/2017 6:51:47 PM EDT
[#50]
Quote HistoryOriginally Posted By MSUbulldog21:
I think I'm on the right track with 18.0 gr of H110 with the 125 gr Nosler BT set to 2.070". I'm not ready to mass produce it just yet, still want to play around with charge weight and seating depth but it's nice to see some sub-MOA results. https://i.imgur.com/zXFUWdW.jpg ETA: Yes I know that should be 0.92" A close second was 17.4 grains of 296 with the same bullet, average velocity of 2002 fps. |
|
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
Attached File
