7mm PRC starting load Please

[kaseyfied]

Factory ammo at 300.... custom 7prc..2nd pic is handloads @100.. 3 shots chrono said 2961...2960.8...2960.5.. h1000.. 180 eldms

 

[nwmnbowhunter]

Looks like that barrel is a trash can lol...feed it anything and it shoots.. have you tried this seating test at extended range? 3-500? Or even 200?

Next week

It did not like 162 ELDM, 4 different powders. Not very consistent and best i could do was 0.5-0.75... which as you can see can be improved upon.

 

[nwmnbowhunter]

No, its not! Look at a burn chart! My bad, wrong context I think.

Bullet speed is slower for 4831sc.... burn rate is faster.... you are correct in your context... lol

 

[Wilderness Blacktail]

A point of reference thats worked for me is to take the same load for a 7 rem mag and knock 2 grains out of it and work up. So if there is no data on the prc with your powder and bullet, but there is data for the rem mag with the powder an bullet. Pick a middle charge, knock out 2 grains and start there. It worked for me when there was virtually no data on the 7 prc out there.

To add to this, some of the loads on Hodgdon are within a grain of data and actual loads I worked up for my 7rem mag when i had it. The capacity is the same and the preasure limit is higher so theres not much reason not to go this route.