Recent content by DavidA

I have to LR308/ AR10’s. Both are 20” barrels with medium profile barrels. Not light by any means. They are fairly heavy 10 lbs plus without scopes or loaded magazines. For me I am 6’5” 270 lbs so it’s not a real big deal. So what is a battle rifle for me may not be for you in terms of...

22 ARC is a direct neck down from 6.5 Grendel. So 6.5 to 22 ARC no problem. Probably two step fit to 6mm then 22

So I finally got the 22 ARC cartridge drawings. It is a direct 6.5 Grendel neck down to 224. Just like 224 Grendel, I was thinking there may be legal difficulties which is why SAAMI has not posted. Got this off youtube specialicedynamics post. Regardless I may dive in. This must really...

My take on it is the 223 REM. I terms of cost, availability, components, as someone said in a pinch you can scrounge brass. In addition barrel life is excellent. I don’t have a bolt gun but I have a 16” light govt profile and a 20” heavy bull. I have thought a lot about upgrading the 20”...

I've done some work on loads for my LR308 with a 20” Black Hole Weaponry P3 barrel. With standard weight buffer and non adjustable gas block. After watching the effects of over gassing and the need to increase dwell time , I opted for an adjustable gas block and a heavier buffer and spring .

hornady is a marketingh machine. As always, the compare Apples to oranges and then tell you they are all oranges. Its just sales 101. ts basicall a knecked down 6.5 Grendel. I have a 6.5 Grendel and to get you to buy the 6 ARC they compare a 108 ELD to another generic round say a 123 ELD M...

When the 170 Berger ELO’s started coming out 10 years ago or so I had two 270 win’s. I decided to give a fast 270 win a whirl. So I took off the oem spotter barrel and had McGowen Precision make me a 1-8 twist 26” Sendero profile barrel. In just my first load development with RL 26 I got...

That is a problem. Not knowing what pressure signs look like at 80,000 psi. The bolts would Handel it, but only using dimensional comparisons could be misleading depending on the difference in alloys used. But boltvsaftey sheets are probably set a 5.5 times failure. But 80,000 psi load’s...

My 260 rem is a 1-8 twist 26” barrel on a Defiance Mach Deviant Tact action . It would be a hoot. Probably get 3,150 out of a 150 Sierra SMK

I already have a 260 rem and a 308. I could just neck it up to 308. That would really wake up my 308 rounds as well.

I’m thinking take a 6,8. X 51 bimetallic case. Run it through a 260 rem full length turn the necks and voila. 260 REM on steroids. Load it to 80,000 psi and put some zhornady 147 , match or some Sierra 150 SMK’s . That would be s screamer, you would need a Speacial coating for your throat or...

For me I think this covers Rem 597 22 lr Rem 870 12 gauge with 18” barrel A S&W M&P 9. Full size 270 win 1-8 twist 26” A couple of AR 15’s 16” to 20” 5.56 An AR 15 6.5 Grendel A couple of LR308’s 308 win A couple of LR308’s 260 rem A long range precision Short action rig with interchangeable...

Here is the physics behind it. Assuming the bullet somehow does not hit a drop . If you acount for humidity , temp and atmospheric pressure. There will be no affect on the POI. If you hit the a series of rain drops they will affect it. This is because as the bullet hits the drop it is no...

Based upon what you as saying. Generally most people use AR’s because usually it is s heard. Once you open fire you are spreading lead. Most use either 300 Black out, 6.5 Grendel or 6.8 SPC. If all you have are bolt guns I would think 22 Creekmore may be a little light. You just something...

I custom throated my 284 win McGowen Precision 28” -8 barrel. My 180 VLD’s at 15 thousandth off the lands has a COAL of 3.269 This was done optimizing bore for 180 to 197’s. So in the end it is close to a .220 freebore. If I place 197 SMK’s 15 thousandths of lands their COAL is 3.393. My...