Seekins PH3 7 PRC Reloading Question

[Nova]

I just purchased a Seekins PH3 in 7 PRC and I'm getting ready to reload for it. I figured I would start with 20 thousands off the rifling lands for length. What do most of you start with?

Thanks.

 

[Grunt-N-Gobble]

Depends on the bullet but it's a good place to start. I started at .020" and ended up at .030".
If using Barnes bullets, they say .050" to start.

 

[Nova]

I just purchased a Seekins PH3 in 7 PRC and I'm getting ready to reload for it. I figured I would start with 20 thousands off the rifling lands for length. What do most of you start with?

Thanks.

I'm starting with Hornady 175g ELDx. I did buy some Barnes 160 LRX to try at some point.

I think I'll start at 0.020 off the lands for the 175g ELDx and go from there.

Thanks for the help!

 

[ahlgringo]

Good advice and ideas. The 160 lrx seems made for the PRC and hunting. Just for another data point. I ended up 75 thou off for the 168lrx and 125 thou off for the 160 in my 22" PH3. 70.3 gr H1000. 1/2-3/4 5 shot groups which is honestly about as good as I can shoot anyway.

 

[wapitibob]

.020 off and never move it.

 

[Nova]

I'm working my way up with the 175 ELDx and H1000. I'm up to 64.3 g stepping every 0.6g. The best 5 shot group so far is ~1.5 inch. I have a feeling it will improve as I increase the powder charge. I'm still 0.020 off the lands. I figured once I settle on the powder charge, I can tune the seating depth. I still want to take a close look at the 160 LRX too. Thanks for the information.