Thread: 7PRC load data

Years ago I used a load of 68gr of 4831sc powder lighted up by a federal large primer behind a 178gr amax in my 300win mag long range gun. Exceptionally accurate. But the only issue , was during very cold weather temperatures, I would have delayed ignition. It was like shooting an old flintlock gun.
Just be aware….

Shit bro. (Kelton) Your SD and ES on that load is rediculous. Well done .
Is that with r26 or 2225

Originally Posted by Bowhunta

Shit bro. (Kelton) Your SD and ES on that load is rediculous. Well done .
Is that with r26 or 2225

Reloader 26 wre primers I actually only done a ladder with 2225 out of curiosity it was a very accurate ladder given the press in powder charges

I’ve just finished load development with 175 bergers ,RL26 & ADG brass 67.4gr got me 1/4 inch groups at 200. 3028fps with sd 1.3 es 3. Just finished dope out to 1267.

What’s ya barrel length?

Originally Posted by Jus

What’s ya barrel length?

3 meters

24” proof 1-8

I’m watching this thread with interest as I looked at rebarreling a rifle last year to a 7mm PRC but the cost is getting up there these days so I figured I’d just wait until Tikka start making them as their generally two years late to the party but I guess there’s a process with implementing US pressures to European pressures.

Anyway, I figured I’d wait until they start churning them out as I’m in no rush.

It seems that people are either running 175 or 180 gr projectiles but has anyone toyed with running any of the 162 gr projectiles or even going as low as 150 gr?

Gun city has a tikka with a 26” fierce carbon barrel. Plus a heap of fierce rifles. I see Bertram now has 7prc brass as well.

Originally Posted by Seventenths

I’m watching this thread with interest as I looked at rebarreling a rifle last year to a 7mm PRC but the cost is getting up there these days so I figured I’d just wait until Tikka start making them as their generally two years late to the party but I guess there’s a process with implementing US pressures to European pressures.

Anyway, I figured I’d wait until they start churning them out as I’m in no rush.

It seems that people are either running 175 or 180 gr projectiles but has anyone toyed with running any of the 162 gr projectiles or even going as low as 150 gr?

I tired 162 Eldx out of interest to see what they would do had great accuracy and speed (for memory around 3150ish with 2217) but never did anything with it. Shoots the heavier bullets great so stuck with them.

Originally Posted by Bowhunta

Ladder test with the retumbo went great . Some good speeds (2942 was the fastest )and hit pressure signs bang on 69gr(justejector mark, primer was still ok looking and not stiff bolt.. Few possible nodes to explore there . Way way happier with this powder .
The ADG brass was a great call. Very consistent between all the loads and results.

Kenton (and anyone else) if I found a load that was good but wanted to try the large rifle primers instead of the magnum primers to see if I could reduce the standard deviation . Would I need to alter the powder charge at all being a smaller primer ? Or is it safe to just switch between the two on a load . Attachment 249916

@Bowhunta
Are you still using Retumbo? I was shooting my cousins 22” Tikka 7PRC this morning and 69gr of 2225 was no where near your speed.

Originally Posted by McNotty

@Bowhunta
Are you still using Retumbo? I was shooting my cousins 22” Tikka 7PRC this morning and 69gr of 2225 was no where near your speed.
Attachment 283567

What weight pill

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Originally Posted by Seventenths

I’m watching this thread with interest as I looked at rebarreling a rifle last year to a 7mm PRC but the cost is getting up there these days so I figured I’d just wait until Tikka start making them as their generally two years late to the party but I guess there’s a process with implementing US pressures to European pressures.

Anyway, I figured I’d wait until they start churning them out as I’m in no rush.

It seems that people are either running 175 or 180 gr projectiles but has anyone toyed with running any of the 162 gr projectiles or even going as low as 150 gr?

I’ve worked up a load using168 LRAbs & RL25 in ADG brass giving ~3020 fps (22in bbl)

I also tried some 154 Interbonds (‘cos I’ve got a box of 100 I need to find a use for) with 2217 in Hornady brass. Could not get them to group consistently. I think Hornady brass is the problem

@McKnotty
Yea I’ve got a load dialed in for 2225(retumbo) but have backed it off to just over 2800 fps but after heaps (like heeeeaps) of testing I eventually settled on ar2217(h1000) at 2800fps

Got the retumbo load as hot as 2950fps and burnt out some brass pretty quickly so scaled right back and found some good consistency at 2800fps with the 180gr eld-ms

I wouldn’t say it hammers but it is great... My 6GT is a shit tonne more consistent in speeds and group sizes (es:14 sd:5 ,10shot 1/2”moa) but I do get a fairly consistent 0.8 - 1.0 Moa for 10 shots with an ES of around 35 and SD around 10-15. After shooting it lots out at 1000y and further I decided to settle there as the wind was playing much more of a factor so focused instead on reading the wind better.