OCW Help

[ubet]

Rifle is an ar15, sionics upper, 16.1” total barrel length, 14.5” sans flash hider, 2-10x32 pstII scope. 75gr hpbt, h335, lc, cci #400 22.0-23.5grs in 0.3 increments. Aiming point was middle of each diamond. I shot clockwise on the left target and right to left on the right target. The high bullet bottom right I know I pulled. I’m thinking my load is around 22.3. I can overlay with ballistic x if someone desires.

It’s not a precision rifle, sionics says their barrels are 1.5moa. My normal load is the single target for reference. I was a little hurried in shooting it as I needed to leave for work. Poa was top of big diamond.

Thanks for any advice.

 

[RegionRat]

To set out to run an OCW, you would need to be realistic about the noise level of the system.

Rather than using this to tune loads, use this rig to keep yourself in tune with your gun handling skills. Go have fun with this one.

 

[ubet]

To set out to run an OCW, you would need to be realistic about the noise level of the system.

Rather than using this to tune loads, use this rig to keep yourself in tune with your gun handling skills. Go have fun with this one.

I’m just looking for a range that I can load this bullet at and just shoot. I can throw powder in the hopper on my 650 and mass load and only check my weights every 50 or do rounds. Not looking to get small moa, just a good middle range where I’m not having to be nit picky on my reloading.

 

[RegionRat]

When you run factory ammo through this rig, keep track of what it hates versus what it likes.
Then, another way to say this is to clone what it likes.
With the same or similar bullet, seated the same, at roughly the same speed.

The advantage of hand loading, is to study the ejection pattern and the brass.
By loading in small batches and testing 15 or so samples of a couple charge levels, you will be able to confidently load bigger batches to your taste.

ETA: not sure how much background level you have.... watch the ejection pattern on the brass, and check the condition of the rim.
What you are looking for, is good feeding, last round should hold open, the speed/energy should make sense for the length of the barrel, and an ejection pattern that is close to 3 to 4 o'clock.

 

[ubet]

All rounds were ejecting 3-4 oclock today. I don’t run factory ammo, only my handloads. Everything fed good and I only did one round in the mag at a time to give the barrel time to cool, bolt stayed open with each. I didn’t run it over a chrono, but these must be a little faster than the smk I posted that I normally run. They were hitting about a moa higher than the smk which are 2503fps.