Barnes 127 grn LRX data

[Lone Star JR]

Barnes 127 grn LRX cci SR CFE223 32grn 2644fps . .4" at 100. Awesome out to 400. Am out of #41 primers could be better. 24" 1-8 twist SS barrel.

[TedBrewer5]

Cci 41s at brownells right now
4:46 pm est

[Old Bob]

Cci 41s at brownells right now
4:46 pm est

CCI #450 SRMs too...

https://www.brownells.com/reloading/prim...79080.aspx

[CazadorBob]

What was your COAL with that load?

[LRRPF52]

Barnes 127 grn LRX cci SR CFE223 32grn 2644fps . .4" at 100. Awesome out to 400. Am out of #41 primers could be better. 24" 1-8 twist SS barrel.

Sorry I didn’t see this earlier.

That load is pushing it a bit even for a 120-123gr cup/core bullet.

If you loaded it long in a bolt gun, you might see sticky bolt lift.

For an AR-15, there isn’t enough mag length allowable to load 32gr of CFE223 under the 127gr LRX and still stay within SAAMI MAP.

2644fps is another indicator of higher pressure with a 127gr monolith.

When I loaded 32.2gr of CFE223 under the 123gr SST at 2.250” COL in the Howa Mini bolt gun, I got 2658fps., which was a 53fs jump in speed over the 31.9gr load prior to it.

Up to 31.0gr, I had very predictable velocity increases for every .3gr of charge weight.

When I loaded the 129gr SST, I was getting sticky bolt lift at 2572fps.

2644fps with a 127gr LRX is screaming out of an AR-15, as a result of excessive chamber pressure.

[s3silver]

Would definitely like to hear more about the OP's load development details and whether he is still using that load. I experimented a little bit with the 127 lrx in my Howa mini but was only getting 2400 fps with benchmark and loaded long to 2.33" coal. Not blazing but shoots .8" at 100 yards consistently. I used Barnes data for their 140 gr match burner.