25x47L AR10 - Supersonic to a mile @ 2300 DA

[257 Blackjack]

Got some great messages from an AR10 shooter today.

25x47L running 2850 - 2950 from 24" tube.

131 ACE at 2950 fps yields about 1640 yds Supersonic at 0 DA and 1760+ yards at 2300+ DA. Not bad for a little cartridge and little bullet.

General feeding testing and powder ladders today. Shooter said with a little tuning to Lancer Mags they are flying into the chamber without a hitch.

I'll be sending out my 6.5 Creedmoor AR10 to the chop shop for a 25 Cal upgrade very soon. Been meaning to do it but this fella worked out a lot of the kinks before I got around to it.

Now that he's lined out feeding and general pressure windows, I can't wait to see what kind of load tuning he can wring out of this type of setup.

 

[Codiekfx400]

Could you explain to me that tube your shooting into.

 

[257 Blackjack]

Could you explain to me that tube your shooting into.

This is not my setup. This is one of our customer's private ranges. I do not have all the details.

I wish I had one though.

 

[steve123]

I wonder how the primers look with those SR primers, as well as whether the firing pin is small and a tight fit to the hole in the bolt? Basically I'm asking if they are blanking or close to it?

 

[Codiekfx400]

That would be great for inclement weather days and load development for sure.

 

[257 Blackjack]

I wonder how the primers look with those SR primers, as well as whether the firing pin is small and a tight fit to the hole in the bolt? Basically I'm asking if they are blanking or close to it?

Could be a smaller FP like some guys spec their builds for these days.

 

[MtnCreek]

Could you explain to me that tube your shooting into.

It appears to be concrete pipe, possably elliptical. Typically used for storm water drainage, but I've seen it used for underground rifle range or fallout shelter.

 

[ShooterwithNoName]

Is it a 6.5x47 lapua necked down to 25cal?

 

[canezach]

Is it a 6.5x47 lapua necked down to 25cal?

Yes. Use a bushing in the 0.281” range in your die is all that’s needed

 

[FCS]

Could you explain to me that tube your shooting into.

Concrete pipe, sections are 10ish feet long & 3ish feet in diameter.

100 yard long tunnel for testing in as close to no wind conditions as possible.

I use same tunnel range several times a month.

 

[MolassesTreeJ]

Any updates on this?