Thoughts on 6mm PRC

[Rickmt]

I would appreciate input on 7mm PRC RIFLE. I am especially interested in hearing from people who actually own and use this caliber. I am considering purchasing a Christensen arms ridgeline . This would be a big brother to the 6.5 PRC that I already own and is one of my most accurate rifles.

 

[Hunting Hitman]

I would appreciate input on 7mm PRC RIFLE. I am especially interested in hearing from people who actually own and use this caliber. I am considering purchasing a Christensen arms ridgeline . This would be a big brother to the 6.5 PRC that I already own and is one of my most accurate rifles.

I own the 7mm PRC in the Bergara Carbon Cure configuration. Took a Pronghorn this past September at 350 yards and it felt like a chip shot.
The 6.5 PRC is close to the 7mm PRC and honestly if you want more of a difference would go with the 300 PRC.

It’s a great caliber though.

HH

 

[375 Ruger Fan]

I did a recent elk hunt and used the outfitter's 300 PRC and was amazed by the performance. I have since done a little research, with the thought of buying a 300 PRC. After watching this video from Ultimate Reloader, there is a good argument to be made for the 7mm PRC.

 

[Fatback]

I just had one built on a LH M70 that was a 338 Win Mag in its previous life. Have gotten it dialed in and have shot a couple of deer with it. So far, I am really impressed with accuracy and terminal performance on deer. I am shooting 170 grain Terminal Ascent cartridges.

 

[Rickmt]

I did a recent elk hunt and used the outfitter's 300 PRC and was amazed by the performance. I have since done a little research, with the thought of buying a 300 PRC. After watching this video from Ultimate Reloader, there is a good argument to be made for the 7mm PRC.

Great explanations. Thank you.

 

[Manwe]

I am working on a 6 PRC and have done a couple 25 PRCs and havent had any issues with Berger LRHT bullets spinning fast. 7 twist 25 PRC pushing the 135 at 3250fps = 334,285 rpm. 6 PRC 7.5 twist pushing the 109 LRHT at 3500fps = 336,000 rpm. Its certainly pushing it hard and other variables will come into play when running on the edge like that.

I am curious how a bullet's jacket failure due to excessive rpm varies based on the length of the barrel? Getting a 109 to shoot at 3500fps out of a 26" barrel will obviously take more powder and pressure than the same velocity with the same bullet out of a 30" barrel. RPM of the bullet would be the same leaving the muzzle of both length barrels, but that bullet accelerated to that rpm more quickly in the shorter barrel. I dont think we can safely assume that a particular bullet will always fail at a certain rpm window because there are other variables involved in how quickly it arrives at the max rpm. I think it is safer to assume that the quicker a bullet reaches max rpm, more stress has been imparted onto the jacket and it is thus more likely to fail.

 

[khesser]

7 PRC is great for taking advantage of high BC 7mm bullets. If you’re not gonna shoot long range or use high BC bullets then I’d go with the 7 Rem Mag. That said I have two 7 PRC rifles and took one to Africa this year and used it on game from 70 yards all the way out to 580 yards for a Kudu. Factory ammo options are limited right now and of everything I have tried Federal is really the only 7 PRC ammo worth using unless you want some cheap ammo for plinking then Hornady will suffice. My 7 PRC has a 24” barrel and Hornady ammo was slow (under 2900fps) and just not accurate enough for me. Federal 170gr Terminal Ascent averaged 3000fps and was both consistent and accurate enough to give me confidence for a long shot if needed. As far as the Christensen Arms Ridgeline I’d look at other options. Seen too many reviews of that rifle not delivering on accuracy.