300 Blackout Ruger Ranch with Sig Sauer BDX needs input

[OldnavyCTT2]

I am new to this forum and not sure where to post. I own a Ruger Ranch 300 blackout with the 16” barrel. I have joined a long distance gun club and gave been shooting at 300 yard range. I am using the Sig Sauer 4.5-14x44 bdx siera3 scope and the Kilo1000 rangefinder. I have been achieving 2” groups at 300 yards with factory ammo. However, consistent velocity is required. The 2” groups were from one box if AAC 110 vmax ammo. But, after that box, those groups ended and I could not get Consistent hits. I believe that it was due to inconsistent velocity round after round.
I purchased a caldwell chronograph and have cleaned my rifle suitable for precision shooting. I will shoot through the chronograph while at the range to record velocity every shot. I have purchased 2 boxes of ammo 1) Hornady Black 110 vmax 2) Ammo Inc signature 110 vmax and 3) AAC sabre black tip 110 grn for comparison. I am seeking sound advice on factory ammo that is not too pricey with reliable velocity consistency. Since I do not have a lot of experience with this amazing caliber, I would appreciate any knowledgable info.
I am 70 years old and have been out of the USNSG for over 40 years. I have shot with top tier shooters and was interviewed by the SEALs to enter their sniper program but was never trained as a sniper or even a combatant by the military. I and the SEAL Lt. Commander decided that my skill sets were better suited for other duties. So, my experience with shooting has been self taught and I was in close contact with various SO organizations due to my duties in the NSG. I say all this because I am a serious rifle shooter with real world experiences and I know that I do not know but wanna learn. God bless our troops and the real heros.
B.S.

 

[Walt Krafft]

To be nice, ime, precision shooting and a Ruger ranch rifle do not belong in the same conversation. You will beat your head against the wall and never get consistent accuracy. You may get a good teaser group. Then it might shoot the world in the next group.

 

[Tommie]

To be nice, ime, precision shooting and a Ruger ranch rifle do not belong in the same conversation. You will beat your head against the wall and never get consistent accuracy. You may get a good teaser group. Then it might shoot the world in the next group.

What Walt said

 

[OldnavyCTT2]

We’ll see. That accuracy for placing precise hits is more up to the shooter than an expensive hole puncher, although, fancy target rifles are preferred for sniping and competition shooting. I’m not interested in either type of shooting. I believe in shooting with an accurate rifle but most of the work belongs to the shooter. Here, I am mostly interested in facts about the 300 blackout factory ammo. Let the shooting be up to the shooter.

 

[Sandstorm]

Not many shooting factory ammo here, but give Black Hills 110 gr a shot. Its done well for me in the past.
I no longer shoot that caliber however or factory ammo.

 

[Knotwild]

I believe in shooting with an accurate rifle

Although ammunition plays a big part, as a general rule, accurate rifles are like race cars. It costs money for something that is consistently accurate.

 

[dellet]

If you are going to buy factory ammo, the best thing you can do is exactly what you are doing. Treat it like 22LR. Buy all you can of different manufacturers and when you find something that shoots exceptional, buy a pallet of that lot number.

The 110 VMax is a known performer in 300 Blackout, but it is also a tricky bullet to load. The reason is that if the brass is not formed to minimum headspace and not trimmed at maximum length, the bullet basically floats in the chamber between the case neck and the lands. Most rifles with many factory loads leave only about .040” of bullet in the case when the lands are engaged. I’ve seen some with as little as .010”. So lot to lot variations of bullets, brass as well as rifle chambers are key. Expect a life expectancy of about 1000 rounds for that kind of accuracy or less. Once the throat wears in or moves forward, that bullet will be flopping like fish in a bucket on its way to the bore.

Since you’re achieving basically 1/2 MOA with factory ammo, I’ll tell you straight out that that was an abnormal day with that load, bullet and rifle with no modifications from factory.

You might consider ammo using the Barnes 110, or Sierra 125. Both designed for the chamber and jump. Many bullets when loaded to SAAMI Maximum, everything sold on the shelf, will have a .200” jump. Bullets that will tolerate that jump, are crucial.

Just to be sure you know, the ammo you bought AAC, American Ammunition Company, is in no way affiliated with AAC, the long defunct Advanced Armament Corporation, that marketed the cartridge to SAAMI.

There is a lot more to it than low ES/SD numbers, at only 300 yards, it just isn’t that important.

 

[ebb]

What exactly are you talking about, a mini14 ranch rifle or a Ruger American ranch rifle? You just called it a ranch rifle. They are 2 very different things. If you own a Ruger American ranch rifle, what you want to do may be possible. The mini 14 no way. Either way 300BLK is hindering you with your goals.