280 AI ready for round two at the range.

[brikwhitt]

I've finally loaded up my second batch of 280 AI. 60.5 gns of RL26 worked so well the last time, I loaded 12 rounds with that load data to see if I can work out my drop chart to 600 yds. I also loaded some at 61.5 and 62gns to see if I'm approaching a safe max load. I will most likely stop when I see 3100 FPS and assume pressure is near max. In reality, I'm pleased with 3013 with the level of accuracy 60.5 gns give me.

I made an observation concerning my resizing dies though. I have both redding comp neck sizing bushing die, and full length s type bushing die. Neck sizing only produced a wider variation in bullet runout than did the full length bushing dies. While neck sizing only (61.5 and 62 gn loads) I had about 50% go .002-.0025 total indicated runout while the rest were around .001. With the full length bushing die I had none go over .001 and probably 35-40% at or near zero.

This is the first time I had both neck only and full length resizers of the same caliber, and able to compare them side by side. Both are bushing dies. If this trend continues, I'll be full length resizing in the future. Just thought I would mention it.

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[Guy Miner]

It's well worth mentioning re the dies. An awful lot of excellent ammo has been built with full-length dies.

Seems like your loads are coming together very nicely. Bullets in the 160 gr area?

Guy

 

[brikwhitt]

150 gn ABLR..... I want to try the Hornady 162gn ELD-X next.

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[JD338]

What kind of accuracy are you seeing?
I'm using 60.0 grs RL22 for 3100 fps in a 24" barrel and getting .5 MOA out to 800 yards in my custom 280 AI.

JD338

 

[brikwhitt]

JD338, the best I could measure it I have a three shot group measuring in the 1's at 60.5 gn of RL26. I have room to go up, but accuracy is so good at 60.5 and 3013 FPS I may call it good enough and stay there.

I would however like to see what it does at up to 62 gns. 61 gns my group opend back up into the 3's and muzzle velocity was at 3050ish still no slouch, and I feel I could probably fiddle with seating depths to get her back in. I will experiment more with it and see what I come up with. For the moment, there is nothing my current best load wont fetch that I send it after.

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[JD338]

Nothing ventured nothing gained.
I need to play around with the 150 gr ABLR. I got my first bullets a few summers back, loaded up rounds, got a zero with a .5 group and went crop damage deer hunting.
I did play with the 168 gr ABLR and IMR7828SSC, produced .056" group but only 2850 fps.

JD338

 

[brikwhitt]

2850 is way slower than I want to be. Killer accuracy though. You didnt find another accuracy node with a higher charge?

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[brikwhitt]

What kind of accuracy are you seeing?
I'm using 60.0 grs RL22 for 3100 fps in a 24" barrel and getting .5 MOA out to 800 yards in my custom 280 AI.

JD338

Accuracy is pretty good JD338... If nothing else gets it done, this will.

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[DrMike]

Now you are bragging. :lol: Excellent riflery and fine load.

 

[TackDriver284]

Pretty good? You got to be kidding me.

It's excellent. I'll sacrifice speed for this group. Deer won't know the difference. Time to try it at 800 yards.

I have a box of 150 ABLR on my shelf that I bought years ago, never used it. I just got the itch to try it in the 7 RM. Currently using the 168 VLD.

Is the ABLR fussy to get to shoot?

What kind of accuracy are you seeing?
I'm using 60.0 grs RL22 for 3100 fps in a 24" barrel and getting .5 MOA out to 800 yards in my custom 280 AI.

JD338

Accuracy is pretty good JD338... If nothing else gets it done, this will.

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[brikwhitt]

Pretty good? You got to be kidding me.

It's excellent. I'll sacrifice speed for this group. Deer won't know the difference. Time to try it at 800 yards.

I have a box of 150 ABLR on my shelf that I bought years ago, never used it. I just got the itch to try it in the 7 RM. Currently using the 168 VLD.

Is the ABLR fussy to get to shoot?

What kind of accuracy are you seeing?
I'm using 60.0 grs RL22 for 3100 fps in a 24" barrel and getting .5 MOA out to 800 yards in my custom 280 AI.

JD338

Accuracy is pretty good JD338... If nothing else gets it done, this will.

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Wasn't fussy for me at all even though I was suspecting that it would be. After trying to get the 168gn VLD'S to shoot in my 06, I didn't want a repeat of that whole ordeal.

I seated them to 3.340 COAL, and first group out of the rifle was sub .5 for three shots. It just kept getting better. The group above was the best of the day. 61 gns opened back up to .370ish

I loaded some at 61.5 and 62gns hopping to see something special my next trip to the range. Right now its all about the turkey's so it will have to wait.

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