Berger 105 Hybrid Target and AR-Comp

[skyrep]

        One of my workups today with the Berger 105 Hybrid Target and AR-Comp.

good day to shoot and workup some loads.

[StoneHendge]

Nice shooting! What was your charge?

[Lemonaid]

Very nice! If I can find some AR-comp I'll try a load like yours. Excellent s.d.
Were there any pressure signs on the brass or primers?

[mikebin]

Very nice numbers! What was your COAL with these rounds?

[grayfox]

Yes! Inquiring minds want to know!!!

[skyrep]

Nice shooting! What was your charge?

 i usually don't pass out actual load data.  However, make sure you work up your load.   I first started off using the scott satterlee load development technique.  I first went up to 26.7 (increasing by .2gr) and found a lower node with zero pressure sign.   So i kept going until i found a higher node. consistent velocity with low SD (BAD GROUPS).  Worked on seating depth and finally came with this load.
27.2gr of AR-Comp.  seating depth of 1.680 (using the Forster Datum Dial Ammo Measurement system).  Changing the seating dept narrowed my grouping and still kept my velocity within 10fps or original load and the SDs below 10.

[Trashy]

That 2731 FPS average velocity your getting is great! Ar-comp is making some good groups too!

The factory hornady black 105 bthp’s only averaged 2708 FPS for me and had like 18 sd and 56 es ???.

That’s some great stuff skyrep.

[skyrep]

Got better velocity with 27.5 of H4895 and a tighter group.
This is in a 22" Bolt in an AR-15 Lower.
2778 fps / SD: 5.2 - .453 Grouping , five shots.