Jump to content
308AR.com Community
  • Visit Aero Precision
  • Visit Brownells
  • Visit EuroOptic
  • Visit Site
  • Visit Beachin Tactical
  • Visit Rainier Arms
  • Visit Ballistic Advantage
  • Visit Palmetto State Armory
  • Visit Cabelas
  • Visit Sportsmans Guide

Another Day at the range


Albroswift

Recommended Posts

Yes, had some good loads. and some not so good. The Barnes TTSX were the worst, patterning not grouping. Moved on after 6-7 rounds. The Game Kings and Sierras were good, the Factory Swine Smashers wouldn't feed for crap. Like they stick in the feed ramps, need to open them up just a bit maybe. Probably just pull them and re-load with GK's. Also thinking to go a little hotter with the RL-7, produced the best groups but lacking velocity. Clean and resize the brass and narrow it down a little bit more next time, maybe without the crosswinds. 

unnamed.jpg.e858ce241d91a08606a9a6f3f2bc6c19.jpg

16" Barrel    Wolf Small Rifle Primers    RP .223 brass     Velocity measured with a LabRadar  6" from muzzle  Gusty winds 5-15 mph Temp 50deg F

Bullet Weight Powder Charge Shots Average Spread SD  
Factory Sharps 87gr SP 87gr     5 2699 47 19.8 Baseline. Fair group.
                 
Factory Sharps 100gr Swine Smasher 100gr     2 2379     Would not feed reliably. Jams in feed ramp. 
                 
Speer Hotcore 87gr Data 2200 24.2gr 5 2532 87 35  
Speer Hotcore 87gr Data 2200 24.7gr 5 2626 29 11.7  
Speer Hotcore 87gr Data 2200 25.2gr 5 2707 28 12.8 Good group match factory velocity. Max  charge Loaddata.com
                 
Speer Hotcore 87gr RL-7 22.1gr 5 2401 56 23  
Speer Hotcore 87gr RL-7 22.8gr 5 2489 225 82.8 Guessing I screwed something  up here
Speer Hotcore 87gr RL-7 23.5gr 5 2607 52 21.7  
                 
Sierra Game King 90gr Data 2200 24.5gr 5 2622 30 11.3  
Sierra Game King 90gr Data 2200 25gr 5 2660 47 18.5  
Sierra Game King 90gr Data 2200 25.5gr 5 2702 26 10 Good group. Close to factory. Max charge Loaddata.com
                 
Sierra Game King 90gr RL-7 21.9gr 5 2422 25 10.2 Good group
Sierra Game King 90gr RL-7 22.6gr 5 2518 46 20.5 Good group
Sierra Game King 90gr RL-7 23.3gr 4 2585 72 29.9 Really good group but slow velocity
                 
Hornady Spire Point 100gr Data 2200 24gr 5 2507 35 13.1 Feeding issues
Hornady Spire Point 100gr Data 2200 24.5gr 5 2559 21 8.7 Feeding issues
Hornady Spire Point 100gr Data 2200 25gr 5 2592 29 10.9 Feeding issues
                 

 

Link to comment
Share on other sites

9 hours ago, Albroswift said:

I'm at 23.3gr, how much hotter do you think I could go? Thinking ladder up .3 increments to 24.2 if the case volume is there, see if the groups hold. Like to see 2700 fps. 

I stopped at 23.1, and only had one more load up above that to test, but that was April 2017.  23.1 was my best group.  Never any pressure signs.  I guess I could load these ladders again and push up to the next accuracy node.  See what shakes out. I'm making them 0.2 grains apart, just so I don't miss something.

Link to comment
Share on other sites

Tested 3 AR's that I worked on. Got the 6.5G ejecting at 2 O'clock at about 4 feet with 123gr Black ammo different magazine.. The 224V is ejecting at 2:30 around 5-6feet about,changed the buffer weight. And the 6.8spc is ejecting at 3:30 around 10ft.,changed buffer and spring. 

Link to comment
Share on other sites

3 minutes ago, MikedaddyH said:

Thanks Tom for the burgers ! 

The new route home is now under an hour drive time.

There was still cold breakfast burritos ready when you got there, brother...   :laffs:   What a damn good day, man.   :thumbup:

Link to comment
Share on other sites

10 hours ago, 98Z5V said:

I stopped at 23.1, and only had one more load up above that to test, but that was April 2017.  23.1 was my best group.  Never any pressure signs.  I guess I could load these ladders again and push up to the next accuracy node.  See what shakes out. I'm making them 0.2 grains apart, just so I don't miss something.

I'll do the .2 on the ladder, already have 60 RP's and 20 FC factory sharps prepped, all fired through this barrel. Also pulled 5 of the 100 gr Swine Smashers, left the 25.5 gr factory ball powder, going to seat some 100gr Hornadys . Same with 5 of the factory 87gr FMJs, they had 28gr powder going to replace with 87gr Hotcores. 

Link to comment
Share on other sites

  • 2 weeks later...

Had a nice day, got some sub MOA groups. The RL7 did not perform well until I hit close to max loading. Noticed that with the 458 as well. Data 2200 = Western Accurate 2200

16" Sharps Rifle Co Barrel
Wolf Small Rifle Primer
 
Velocity measured with a Labradar 6" from muzzle
      50 deg F 25-45 Sharps
Bullet Weight Powder Charge Shots Average Spread SD  
Sierra Game King 90gr RL-7 22.8 5 2454 81 34 Doesn't perform well reduced loading
Sierra Game King 90gr RL-7 23 5 2446 164 69.2 REALLY Doesn't perform well reduced loading. May have flipped this data and the 22.8 charge weight data. 
Sierra Game King 90gr RL-7 23.2 5 2510 48 18.3 MOA
Sierra Game King 90gr RL-7 23.4 5 2524 30 11.9 Sub MOA
Sierra Game King 90gr RL-7 23.6 5 2560 16 6.8 Sub MOA Note: Over SAAMI Max Load
Sierra Game King 90gr Data 2200 25.2 5 2631 64 25.5 MOA
Sierra Game King 90gr Data 2200 25.4 5 2656 52 20.7 Sub MOA
Sierra Game King 90gr Data 2200 25.6 5 2678 18 8.9 Sub MOA Note: Over SAAMI Max Load
Link to comment
Share on other sites

Looking at the data again and racking my brain, I used some new brass that I pulled the bullets out of and dumped the powder, and then reloaded without re-sizing the neck. might have been the first 15 or 20 loads. The reduced RL-7 from a couple weeks ago didn't exhibit anything like this.

download.jpg.6bb430fad5155c6b951970614e6b3e63.jpg

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...