Originally Posted by WildRose
If it were me I'd load up nine of those at each weight and go out on as calm a day as possible and set up a 300yds target.
Let the rifle cool down completely between each three round group.
take the average from each weight/charge and see which gives you the best accuracy.
You can tweak up and down with whichever gives you the best results until you find that sweet spot between accuracy and speed.
Once you've done that as long as you are seeing zero pressure signs, you can adjust your seating depth outward a couple of thousandths at a time and see if that tightens it up even further.
Unless you plan on shooting prairie dogs beyond six hundred yards anything under 1 MOA is acceptable especially in an SPS.
Question, have you done a complete float and bedding job? Does it have an aluminum bedding block or factory pillars installed?
If you haven't done the floating and bedding I would not mess with anything else until that is done because your results over the long term are likely to be very inconsistent particularly with changes in temperature and humidity.
Took the advice and pillar bedded on my aluminum bedding block in my B&C stock. Just getting her back together - she's TIGHT!
I think I'm going to ladder up with one round each from 74 - 80 grains with H1000 and the 168 grain AB Long Range per this article
: Hand Loading for Long Range 4: Powderin' it
Kind of opened my eyes to a better process for identifying the accuracy node(s).
Then I'll fine tune from there. I'll report back after phase 1 of this process. I may try the same thing with the 175 gr AB Long range from 73 - 79 grains. I Picked up 100 of those too, but I suspect that might be on the edge stability wise with factory twist. I think factory twist is 1:9.5?
Guess I could measure it to know for sure. Be interesting to see how well it shoots the factory 160 gr. Nosler Customs now that I've stabilized the action. Probably starting over from scratch. I bedded 1" in front of the recoil lug on the non-tapered portion of the barrel. I can always grind it out if it doesn't like it I guess.
Can anybody report max load with H1000 and 168's?
Based on some stuff I've seen on Bergers it seemed like about 80-ish was max. I'll keep an eye on pressure signs as I work up.
Thanks for the advice guys!