7PRC loads & velocities

[Prieto9000]

What sort of loads and velocities are you guys seeing with the 7 PRC? I'm sort of toying with the idea of replacing my 300 WM with the 7 PRC but what wondering what is real world experience with different bullets out there. How hard can you push Hammers in the 140-150 grain and bullets like the Accubond and Hornady SST in the 150 grain? Just curious if you see much difference in the 7 prc compared to the 300wm with bullets in this weight.

Hornady says their 7prc ammo can push 3000fps in the 175 grain eldx but from what I've heard the factory ammo isn't reallly close to that

I'm getting 3200 fps with the hornady interbonds and h1000

 

[Pengilly2]

Still love the 7mm wsm!

Excellent cartridge...3100 out of a 26" proof carbon shooting 180s

 

[VinceMule]

I would really appreciate Load data, Pengilly

Thanks

 

[Buxndiverdux]

7mm prc is just something new to sell more guns and components . It is no advantage over many existing calibers, but fads sell guns for the firearms companies. So, I guess it does stimulate the gun industry somewhat. The old 7mm Rem mag, saum, and wsm still work fine, but got boring. Personally , I like boring.

I agree to a point... Except when it comes to cartridge design. The PRC lines have room for heavies in the magazine box and can be loaded for maximum performance without stuffing excessive amounts of bullet into the case. You won't accomplish that with a production 7Rem Mag.

I've spent extra money doing that to conventional chamberings to maximize performance. The PRC lines take advantage of this and it's available to the masses, with production rifles and with factory ammo.

There is still no replacement for powder capacity. If the 7mm Rem Mag was built with a throated chamber for heavies, a Wyatt's box, and a 7.5 twist barrel, it will smoke a 7PRC on powder capacity alone. Recoil will reflect that performance gain as well.

 

[K.E.C.]

I agree to a point... Except when it comes to cartridge design. The PRC lines have room for heavies in the magazine box and can be loaded for maximum performance without stuffing excessive amounts of bullet into the case. You won't accomplish that with a production 7Rem Mag.

I've spent extra money doing that to conventional chamberings to maximize performance. The PRC lines take advantage of this and it's available to the masses, with production rifles and with factory ammo.

There is still no replacement for powder capacity. If the 7mm Rem Mag was built with a throated chamber for heavies, a Wyatt's box, and a 7.5 twist barrel, it will smoke a 7PRC on powder capacity alone. Recoil will reflect that performance gain as well.

I agree. I like the 7.prc and as a parent case. Like the creed, the 7prc case can and will be used from 6.mm to 33.
And someone will do a 22 and a 37.

 

[ELoodo]

Hoping this info helps a few people.
Im shooting a Savage Ultralight Camo in 7prc with a 22" proof barrel. I have a Vortex PST 5x25 FFP for glass. Other than bedding the stock and lightening the trigger down to 2lbs the rifle is factory stock. This is intended to be my new elk rifle.
I started using Hornady brass and lost 3 pieces after two firings due to primer pockets stretching. Started shooting Peterson brass. After a couple firings the brass is still great as expected. (I use the ballistic tools swage gauges to find bad primer pockets). I didnt notice any other performance gains or losses using either the hornady or peterson brass. Hands down the Peterson is better quality but time will tell how long it lasts.

Ive tried a mix of H4831sc, RE22, H1000, and StaballHD. Different powder charges, seating depths, etc etc.. What I found for my rifle is the H4831sc and H1000 appeared to group the best. Ive only reloaded for the 175gr Hornady ELD-X, 175gr NosABLR, and 168gr NosABLR bullets.

**According to most resources all of my recipes are over charged. I loaded beyond these charge weights to find pressure in my rifle, best you do the same and work up from a much lower starting point.

175gr ELD-x, 66.6grs H4831sc, .060" jump, CCI250 LargeMag primers, 2940fps. This results in a100yd 1/4" - .3" group sizes.
175gr NosABLR, 68.5grs H1000, .050" jump, CCI250 LargeMag primers, 2850fps. Under 1/2" at 100yds
168gr NosABLR, 67gr H4831sc, .075" jump, CCI250 LargeMag primers, 2944fps. Under 1/2" at 100yds

 

[MOelkman]

Hoping this info helps a few people.
Im shooting a Savage Ultralight Camo in 7prc with a 22" proof barrel. I have a Vortex PST 5x25 FFP for glass. Other than bedding the stock and lightening the trigger down to 2lbs the rifle is factory stock. This is intended to be my new elk rifle.
I started using Hornady brass and lost 3 pieces after two firings due to primer pockets stretching. Started shooting Peterson brass. After a couple firings the brass is still great as expected. (I use the ballistic tools swage gauges to find bad primer pockets). I didnt notice any other performance gains or losses using either the hornady or peterson brass. Hands down the Peterson is better quality but time will tell how long it lasts.

Ive tried a mix of H4831sc, RE22, H1000, and StaballHD. Different powder charges, seating depths, etc etc.. What I found for my rifle is the H4831sc and H1000 appeared to group the best. Ive only reloaded for the 175gr Hornady ELD-X, 175gr NosABLR, and 168gr NosABLR bullets.

**According to most resources all of my recipes are over charged. I loaded beyond these charge weights to find pressure in my rifle, best you do the same and work up from a much lower starting point.

175gr ELD-x, 66.6grs H4831sc, .060" jump, CCI250 LargeMag primers, 2940fps. This results in a100yd 1/4" - .3" group sizes.
175gr NosABLR, 68.5grs H1000, .050" jump, CCI250 LargeMag primers, 2850fps. Under 1/2" at 100yds
168gr NosABLR, 67gr H4831sc, .075" jump, CCI250 LargeMag primers, 2944fps. Under 1/2" at 100yds

Thanks for the data. It is most helpful.
What is your round count on your barrel to get this information?

 

[ELoodo]

Thanks for the data. It is most helpful.
What is your round count on your barrel to get this information?

Im sitting right around 190 - 200 rounds down the tube right now. With the exception of shooting targets at stepped ranges out to 500yards I logged every shot over the chrony and for group sizes.

 

[Gone Ballistic]

I'm very curious how hard and fast you can push the Hammer bullets in the 7prc. They say speed kills with the hammers so can you get the 140'ish grain class of Hammer Hunters up to 3300'ish FPS? I would think it would be possible but would really like some real world experience.

The 7mmPRC won't do anything phenomenal when you shoot bullets under 168gr or more of bullet weight. It's actually designed for bullets that weigh 175gr and above. The Nosler 175gr Accubond LR's are a good bullet to use as well as the Hornaday 180gr ELD-X for elk, moose, and mule deer as they are shot with exceptionally high terminal velocity which really packs a punch! The lower gr. bullet weight bullets work better with higher rate of twist barrelled guns like the 7mm Remington Magnum or the 28 Nosler which have twist rates in the 9-9.5 twists range. The 7mmPRC has an 8 twist, which is a lot faster rotation for stabilizing the longer, heavier bullets.
For those of you who have purchased loaded Hornaday 175gr bullets lately, you might be seeing a lot lower speeds than Hornaday published on their boxes. This is due to a shortage of the powder that they were using to develop the load they used loading the shells in the beginning. Apparently they haven't found another source of powder to use that will provide the same speed of their original ones. I think that they should have printed a sticker to place on the box so they didn't misinform the customer. Apparently they don't concur with me. The information that they are publishing shows around 200 fps faster than it is really going! That's a bunch of nonsense Hornaday, besides being false advertising. How are we supposed to trust you on any information you supply us with when we know you will lie to save money on some empty ammunition cartons! Sorry Hornaday, I won't be buying anything from you again!