Factory ammo speeds
https://youtu.be/crLE-3rQgrk?si=KkIcIv_OJW2mRWZO
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Factory ammo speeds
https://youtu.be/crLE-3rQgrk?si=KkIcIv_OJW2mRWZO
Thanks for alerting us to that tahr.
Greg Duley is good at a lot of things and writing about big 7mms is certainly one of them.
That article is a good run down on the similar cartridges and the technical reasons for the 7mm PRC design and chamber/barrel specs.
So far he has only reported on a quick test of factory ammo in one factory rifle.
Like others, I was a bit unimpressed with a case failing after only 6 reloads (having got 15 so far from my 7mm08 and still going strong).
He promises to explore reloading potential in a couple of future articles.
I came across an interesting post on the Sako.global web site (search for: " 65-creedmoor-vs-65-prc-hunting " ).
Sako's advice is that the 6.5 Creedmore is very easy to find a good load for, while the 6.5 PRC does have good potential but is difficult.
I wonder if this is what we'll see with the 7mm PRC ?
At present, the 7mm PRC is largely the province of custom rifle builds and Hornady factory ammo brass, so we can expect erratic performance, sometimes stellar and sometimes random. I see a lot of advantage in a factory rifle.
Once there is a Sako 90 Peak in 7mm PRC and Lapua brass, I'll strongly consider it. For now, I'm window shopping.
I’ve had better results with Magpro than 2217 or 2213SC in my 7WSM, which has similar capacity to the PRC, so you could try that.
There are some benefits but I’d only be interested in a 7mm/300 PRC
The 2.580 long case of the 300 makes the most of the whole idea rather than the 2.280 length of the 7mm PRC
About 15 years ago I got a 6.5/300rcm reamer and built that...
129lrab at 3084 all day in a 20" shillen on 15th firing with brass and only 57 gn of powder..
Then they came up with the PRC.. not even close in performance and more like a 260 imo.. but you can fire form these PRC cases to 6.5/300rcm as long as loaded to lands no issues and you end up with a trimless case that still works fantastic in a SA....
I'd be thinking on similar lines with these 7prcs
The 6.5 PRC case is 20 thou narrower and shorter than a 7saum case
A 7saum in a fast twist Tikka or custom will still harvest deer further than most require
That is where a 6.5-300 wsm is not too bad either. The quality brass are around , simple neck down and good speed available with out to much over pressure, and it fits into a tikka mag with slight tweaking . But you have to reload …
I have had two 7mm PRC rifles built through Greg @ Terminator Brakes with 24" Bartlein barrels - one for me and one for a good friend. Both rifles consistently group <0.75 MOA (5 x rd groups) with factory 175gr ELD-X from Hornday and both have taken animals out to 1km in the right conditions.
Currently, I wouldn't want to push it further than that on game and IMO, <800m is a more realistic high confidence zone on Bull Tahr and Red Deer with the right support equipment, training and environmental conditions. Furthermore, the variance in muzzle velocity of the Hornady 175gr ELD-X ammunition is less than ideal - see image below. Hence why I'll be seeking hand loads moving forward. Something else to be aware of with this configuration is the MV migration. Both rifles started out at 2925fps with factory ammunition and now average 2985fps with the same lot of ammunition at similar temp. Unfortunately I have not conducted specific MV temp sensitivity testing with this ammunition so I can't comment on that potential error variable.
Critique aside, I am very happy with how both rifles have turned out and do not plan on changing the platform, nor calibre for my long range hunting rig anytime soon.
Attachment 248497
Attachment 248498
Thanks mate. Not to hijack the thread and turn it into a optics debate but I've been burnt too many times with lesser optics. Like a good friend of ours often states: "buy once, cry once". That said, I still think some of the other brands have some solid options. The NF ATACR are NX8 are just the ones that I settled on for my applications and I haven't regretted it.
@Bagheera that's gonna be very light for a stout calibre, be a fair bit of extra kick to it I imagine? Or do you mean with a brake ?
Along the lines of with fat cartridge such as a saum wsm u need a fat action with a 1.06” diameter barrel tenon or you’ll get sticky extraction before u get to 65,000 psi. T3 only has a 1”tenon and apparently not suited for fatter cases like 270 wsm (T3 chambered this i think be interesting to hear what 270wsm owners have got sticky xtract?)
Thanks, advice taken.
Im thinking of with suppressor and a heavy scope.
Dont laugh but my 7mm08 kicked fairly hard till I put those on and now its barely noticeable. I think with a good stock, suppressor and avoiding flute/ short barrel we can handle bigger cartridges and get less recoil than in the old days. A heavy scope above the bore line also helps a bit reducing jump ( but it still jumps ).
@Bagheera
I'm actually keen on a big 7 myself, something lightweight, but I've had a painful to shoot rifle before and it isn't fun.
Agree on suppressor etc. I run a 16" browning lightweight 308 with a dpt and lightweight 1-6 swaro scope. The kick isn't hard and all and it is nice to shoot, it's the dpt that calms it.
Just not sure it would be the same deal with a light 7mm magnum, too bad we can't try before we buy.
Just saw this post on the fb 7mm prc group
Attachment 248859
This is interesting, Hornady using different powders in there precision hunter line in 7prc.
https://youtu.be/4z28TJTQ-Rg?si=u8I-fo8x3cdbzzJf
Bronco has them.
Duleys done write up in last two magazines. Edition 100 and 101.
Bloody in-depth wrote up. It’s a bloody good read.
Tested one piece of ADG brass as well. Got 35 firings out of it before it wouldn’t hold primer.
If Tikka bring out a factory version I’d definitely look at changing to 7mm cartridge.
Yeah a bloody good caliber I might need to get another one
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It’s also absolutely ridiculous to say you can’t keep one piece seperate for testing when your writing a review or an article for a magazine you literally have one job just load it shoot it load it shoot it dam site faster than pulling out a file each time probably could have fired it 3-5 times in the time that’d take
So three secs maybe to file a notch. Wish I could reload an empty cartridge and fire it in less time than that. Must have missed that part of the training manual.
I got the Nz hunter mag just for this article but was disappointed to see it was basically RL26 loads. Hopefully the next bush pig articles cater to us peasants.
Shooting 162-168s at 2850 with and ADI powder would convince me to go this route if I can get away with a stumpy barrel but I kinda want confirmation that this can be pushed down as far as 18”.
Not much point publishing anything using RL powder until they start making it again at whatever unknown point in the future
@Kiwi Greg next time I’m up in Nelson I must come and see “The Guy” :D