Load development in my AR15

From the .22 to the mighty 50 caliber

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Load development in my AR15

Postby TomKat » Mon May 14, 2012 10:28 am

This is mostly for tucker, but others are welcome to comment. Black circle is one inch.

I shot this group yesterday. Load was a 55 gr NBT, pushed with 26.5 grn Varger. It shows some promise, but further testing is needed.

Image



I am still hoping to find a 50 grn bullet that will work in this gun. It seems to like 55 grn bullets, and I may have to settle on that. Next up will be some 52 grn Sierra Matchkings using Benchmark powder.
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Re: Load development in my AR15

Postby Sagebrush » Mon May 14, 2012 1:41 pm

Looking good.................
Varget, BLC-2 and w748 has worked for me.............
primers did not really matter but used cci and kept the bullet a touch off the barrels lands.

Nothing worse than a bullet flush and having to unload it and have the powder go all over.......or have to pull the triger to
prevent the mess.

Had a 30-06 load that I gave to my budy for his rifle and out deer hunting, he had to unload and powder all over and bullet stuck in the barrel..............not all chamber and throats are the same !! One reason for maximum over all load / bullet lengths.
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Re: Load development in my AR15

Postby TomKat » Mon May 14, 2012 2:36 pm

This one is about .007 from the lands (or the max OCL) When I get a load I like, I will mess around with the OCL to see what works best.
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Re: Load development in my AR15

Postby Bill Herian » Mon May 14, 2012 3:13 pm

The song dogs are shivering TK :thumbsup:
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Re: Load development in my AR15

Postby Sagebrush » Tue May 15, 2012 9:15 am

Funny thing about bullets, is that some like your barrel and some take a while to settle down and stop the axis/yawl
while going down range. Some will actually shoot tighter groups at 200 yards than at 100 yards................weird !!

Found this out one day going out to 200 yards to test for drop with a 100 yard zero................Hellow,what do we have here?
Now I test all my X-lite target and maximum loads at 200 yards before I make my final decision, if the loads are any good, in all my rifles. Just a pain to have to walk down and back, at the rifle range, since the range master only allows one target per
stand............. (wood frames were getting shot up)
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Re: Load development in my AR15

Postby TomKat » Tue May 15, 2012 10:42 am

I am thinking about getting a free float tube for my AR. I think that might make it group a little more consistient....
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Re: Load development in my AR15

Postby Sagebrush » Wed May 16, 2012 9:04 am

Free floating and action/receiver support is a funny thing...............

Some of my rifles like to be floating while some like a full "Glass" bed to the end of the stock.
Some people go the "Plastic" rout to keep the stock from swelling from moisture.........

Hope things work out for you.
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Re: Load development in my AR15

Postby TomKat » Wed May 16, 2012 10:37 am

Thank ya Sage. I ordered a FF tube, vice block, and barrel nut tool today, I am going the full route on this gun to get best accuracy.
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