Tell us about your Midwayusa AR Stoner barrel.

[XcountryRider]

I'm curious about other people experiences with AR Stoner barrels. I had two of my Grendels hooked up to a chrony for the first time today and i was getting unusually fast velocities. I need more chrony time with various loads to get a clearer picture of my speeds but they look pretty good. How is your AR Stoner barrel barrel? Any experiences to share?

[Bwild97]

Put some factory Hornady over your chrono, that will give you a good baseline to judge the hand loads by. Factory loaded AMAXs are reported at 2594 fps avg. (24" brl.) from my Gamma Master Chrony, 14 fps faster than published velocities on the box. My barrel is a 24" Bull, E.R. Shaw 1-9 twist.

[XcountryRider]

Yes we thought of that after we packed up today. We did compare the same loads in a different Grendel and the results where right on as expected for the loads shot in his Grendel.

[XcountryRider]

Midwayusa AR Stoner barrel is an ER Shaw barrel is it not?

[Bwild97]

I think MidwayUsa will put their name on any barrel they can source at a lower cost, no matter who produced it.

[Drifter]

Midwayusa AR Stoner barrel is an ER Shaw barrel is it not?

At some point in time, they were believed to be made by Liberty (now a part of Satern). Not sure about current ARS barrels...

[Tedward]

I have a 24" AR-Stoner marked 5R. It's hooked up to a LOKI Billet lower with a Modified DPMS Low Profile Upper. I still have the Loki Upper with the forward assist but not using that right now. I finally got a 2-7x35 Vortex Scope that I actually got for my Wylde and am getting 1" MOA at 150 yards. Thats as far as I've taken it out in the back field. At 100 yards I can get 1/2moa and then a flier here and there. I'm new to shooting it so still learning so the groups are tightening up. I talked to the owner Jim Baron at Quality Arms and he says the 5R is a great button cut and has won many compensations. I don't actually know that for sure but it was the Grendel than I was able to get back in March and Midway was the only one who had it. For a few hours and I got one. Also just got a 16" the other day from Midway, it pooped up for I guess the minute i looked because they were sold out right after I ordered it. This will be my "Hunting in the woods rifle" because the 24" is pretty heavy.

My son met a guy at work the other week who is highly into 308 Bolt guns. The old guy, as my son described him, has rights to a 1000 yard range at Quantico Marine Base here in VA. I plan to go with him in the next few weeks for tips and to use his Chronograph to get the speeds. I am only using factory Hornady AMAX and SST in 123gr. I'll let you know how it does and trying to find some 129gr but seems as if they need to be hand loads. Not sure if it will be better but was thinking the heavy bullet will knock down deer better but will be trying the 123 SST's this year.

[XcountryRider]

I got my Ar Stoner in that window as well. Actually two separate shipments came in a couple weeks apart and got both during that period. Sure would like to hear from others that have chronyied loads.

[Tedward]

I got my Ar Stoner in that window as well. Actually two separate shipments came in a couple weeks apart and got both during that period. Sure would like to hear from others that have chronyied loads.

What period (date) and what length did you get? Have you chronyied and of yours?

[XcountryRider]

I got them in Feb and Mar and both were 24 in and had one cut to 18in. My velocities are around 130 to 150fps faster than they should be for both rifles so need more chrony time to test various loads and factory ammo. When i chrony again i'll post up velocities. Right now people will think i'm nuts.

[Tedward]

I tell ya that gut at Quality Arms will speak highly of the 5R so give him a call, he loves to talk Grendel. He has some good info, just have some time when you call because if you get him at 10:00 (eastern time) he is ready to go.... talks about 1,200 yard or meter shots they do but consider the air is thin where he is and that makes a big difference according to him. He knows a lot about powders, burn times, barrel length and altitude changes in projector.

read soon....

[Drifter]

My velocities are around 130 to 150fps faster than they should be for both rifles so need more chrony time to test various loads and factory ammo. When i chrony again i'll post up velocities. Right now people will think i'm nuts.

That's quite a bit of extra speed. If it comes at the expense of added pressure, the loads might not be safe. Exercise caution.

If possible, try some loads through your chrony where the speeds are known or predictable, preferably with a different rifle and ammo that are known to be safe.

If you haven't already, check your chamber for COL and make sure that your ammo is tailored accordingly.

Err on the safe side until you get a better understanding of what's happening.

[XcountryRider]

Drifter the same ammo was shot through a 24in barrel with expected velocities. Note taken though and i'll be careful. We plan on doing more measurements to confirm. As i say both my Grendels with Ar Stoner barrels had this same extra velocity.

[Tedward]

That's quite a bit of extra speed. If it comes at the expense of added pressure, the loads might not be safe. Exercise caution.

If possible, try some loads through your chrony where the speeds are known or predictable, preferably with a different rifle and ammo that are known to be safe.

If you haven't already, check your chamber for COL and make sure that your ammo is tailored accordingly.

Err on the safe side until you get a better understanding of what's happening.

I'll be running factory so we can compare the same 24" 5R Stoner and see how much he is getting from his than mine. I hope to have my 16" MLGS Stoner ready to go by then too. just need a comp in 9/16-24. Don't want the Heli-Port Muzzle Break they offer, I want some recoil help. I think someone has a trnd here on them offered in SS and Black but need to see how his turns out and might go that way. So getting the 16" finished might take longer to get than me getting to use a Chrony.

[XcountryRider]

I did a little googleing and it seems the consensus is that AR Stoner barrels are ER Shaw barrels. Ar they faster than average barrels is the question i have.