7mm PRC starting load Please

[bahabill]

Building new rifle and looking for starting data. I have GORDONS RELOADING and sorry to ask but it does not have 7prc data.

Here is spec

Peterson Brass
24 inch barrel
hornady 162 eld-m
Berger 168 VLD hunter

POWDER is Viht. N565 Got alot of it and works great in my other 6.5 prc and 300

Looking for the begining of 100% powder burn cause this powder is only dirty burning when running lean.

Starting / max presure if you can please Thanks guys

 

[dustbag]

From Hornady

 

[Phil Rizzo]

Charge weights will be close to N165/H1000.

I'd start about 67grs and go up slow with a 2 shot ladder but your choice is yours.

 

[nwmnbowhunter]

I have found n565 to equal h1000 charge weights.

This was with with peterson brass, cci 250

68.6 was false ejector mark.

Barrel is 22 inch 8 twist

 

[The Oregonian]

Building new rifle and looking for starting data. I have GORDONS RELOADING and sorry to ask but it does not have 7prc data.

Here is spec

Peterson Brass
24 inch barrel
hornady 162 eld-m
Berger 168 VLD hunter

POWDER is Viht. N565 Got alot of it and works great in my other 6.5 prc and 300

Looking for the begining of 100% powder burn cause this powder is only dirty burning when running lean.

Starting / max presure if you can please Thanks guys

Here is data from VV's website

 

[WWG55]

"]https://www.mossyoak.com/our-obsession/blogs/how-to/loading-for-the-7mm-prc[/URL] Here is a link to an article I wrote for Mossy Oak developing loads for the 7mm PRC. 1/2 inch groups at 100 yds were easily achieved with a bone stock Savage Ultralite. While it doesn't exactly fit the criteria you listed, it does give you some good options

 

[WAR308]

Dont be surprised if the loads fps dont match the hornady guide or others recorded feedback in shorter barrels. I have a x-bolt in 20" and have had to push them to get to 2850 on 175s. Im thinking RL26 is the speed for this and the rest just get too much pressure trying to chase the number. Your 22" will help some but Im using rl22, h1000, and staball hd.

hornady brass was soft and extractor marks. switched to ADG and that helped.

 

[WAR308]

Dont be surprised if the loads fps dont match the hornady guide or others recorded feedback in shorter barrels. I have a x-bolt in 20" and have had to push them to get to 2850 on 175s. Im thinking RL26 is the speed for this and the rest just get too much pressure trying to chase the number. Your 22" will help some but Im using rl22, h1000, and staball hd.

hornady brass was soft and extractor marks. switched to ADG and that helped.

new barrel should speed up over the first 50 rounds fired

 

[Tommy T]

Building new rifle and looking for starting data. I have GORDONS RELOADING and sorry to ask but it does not have 7prc data.

Here is spec

Peterson Brass
24 inch barrel
hornady 162 eld-m
Berger 168 VLD hunter

POWDER is Viht. N565 Got alot of it and works great in my other 6.5 prc and 300

Looking for the begining of 100% powder burn cause this powder is only dirty burning when running lean.

Starting / max presure if you can please Thanks guys

Look on Hawkins 7PRC load testing they have what you are looking for by the way you know that 565. Burn temp is over 4000 degrees

 

[kaseyfied]

Dont be surprised if the loads fps dont match the hornady guide or others recorded feedback in shorter barrels. I have a x-bolt in 20" and have had to push them to get to 2850 on 175s. Im thinking RL26 is the speed for this and the rest just get too much pressure trying to chase the number. Your 22" will help some but Im using rl22, h1000, and staball hd.

hornady brass was soft and extractor marks. switched to ADG and that helped.

Did you try n560? I found that to be pretty good in the shorter 6.5s.. n565nas well. Theb7prc i just finished is a 23inch barrel and 180s are doing 2960 with h1000.. shoots literally 1 hole @100 .. next charge up shot well under 1/2 minute as well at nearly 3k

 

[blackfoot95]

Building new rifle and looking for starting data. I have GORDONS RELOADING and sorry to ask but it does not have 7prc data.

Here is spec

Peterson Brass
24 inch barrel
hornady 162 eld-m
Berger 168 VLD hunter

POWDER is Viht. N565 Got alot of it and works great in my other 6.5 prc and 300

Looking for the begining of 100% powder burn cause this powder is only dirty burning when running lean.

Starting / max presure if you can please Thanks guys

A pdf from Hornady I dl'd

 

[WAR308]

A

Charge weights will be close to N165/H1000.

I'd start about 67grs and go up slow with a 2 shot ladder but your choice is yours.

My experience was the same. I started at 67.3 and climbed up from there.

 

[WAR308]

Did you try n560? I found that to be pretty good in the shorter 6.5s.. n565nas well. Theb7prc i just finished is a 23inch barrel and 180s are doing 2960 with h1000.. shoots literally 1 hole @100 .. next charge up shot well under 1/2 minute as well at nearly 3k

Have not tried n560, just thinking the x-bolt might be a hair slow. I'll try to find some 560 and see how it goes.

I had the same issue mentioned about two bullets really tight to touching and then a 1" flyer and thinking it's the brass, shooting the ADG brass workups tomorrow with 175' ABLRs in H1000 and Staball HD and will chrony along with group testing.

 

[WAR308]

i have always wondered if going to a quicker powder would do better in the shorter barrels, but haven't seen the correlation with other guns so not sure. Any thoughts or experience on that?