7 PRC and 300 PRC

[ejg]

The energy difference at 300 yards is quite minimal, 2429 vs 2679 ft lb, so the smaller, more efficient cartridge is carrying more energy at 300 than many deer cartridges at the muzzle.

Wrong, look again. According to the Hornady website the difference is 565 ft/lb.

edi

 

[John Gryphon]

All of it!
over 3000 with 180s

Like a .300 Win Mag.

 

[25 Sharps]

Wrong, look again. According to the Hornady website the difference is 565 ft/lb.

edi

Doh. Picked up the velocity figure!
180 gr 7 PRC


162 gr .280AI




The .280 is still carrying as much as many deer calibres at the muzzle though, more than enough for anything in the UK. All that extra energy from the PRC is going into the backstop.

 

[Penyard]

I guess this all very much depends on the intended usage. My 7mm PRC is a double duty rifle with a chassis for range work and a PSE Evolution for hunting which will mostly be in Africa. I will be glad of all of the energy when shooting larger plains game at longer distances than would be convention in the UK. I will not need or desire that energy for deer stalking at home but do intend to use it for wild boar at home and possibly tricky fallow in big open fields.

 

[Edinburgh Rifles]

Like a .300 Win Mag.

But with significantly less powder and a better BC in a 7mm
78gr to get that out of a 300wm
We are getting that with 58gr of powder!!

thats a huge difference

 

[John Gryphon]

But with significantly less powder and a better BC in a 7mm
78gr to get that out of a 300wm
We are getting that with 58gr of powder!!

thats a huge difference

Understood.

 

[AM_Lillycombe]

She is ready except the PSE stock is not here so currently using an MDT oryx. I also think my front scope ring might be on backwards

 

[MidlandsPaperPuncher]

Very smart! What's the moderator?

 

[AM_Lillycombe]

Very smart! What's the moderator?

Freyr and Devik. It’s the one with the titanium core.

Edit: Freyr & Devik 338 3d silence

 

[AM_Lillycombe]

Hornady website is a 200yard zero. I used a 100m zero with the bc and velocity from the Hornady website.

All the aforementioned cartridges are going to be fabulous fun.
Ok 2 to 4 more inches on 7prc would get the absolute most out of the round but we are talking 100 or 200 fps difference. But It’s still sending a 180gr round at 3800+ fps so a 22 inch barrel will be fine.

7mm backcountry looks like the ultimate hunting round (short action with 80,000 psi max pressure and high velocity even with short barrel) but it’s a bit too obscure for me.

Just realised I wrote “3800+” not “2800+” that was a typo.

 

[hudsonaj01]

Rem700 on an MDT chassis