The 133 likes a lot of neck tension. With that and rifling marks that are about half as long as wide (specific to that bullet), you should be able to work up from 28.3, working up by .3. I think that you will find it the cleanest burning alternative. For me 130 has worked in cold weather, but has not held up in the heat.
308sako, hard to tell from your posts if you are interested in developing loads for competition or are just wanting to shoot some nostalgia loads and have some fun.
I have been doing some load testing the last few months with my 6 PPC, looking to go competitive with it this season (if I can learn to shoot as good as it does). N133 is, for sure, the go-to powder for the 6 PPC and empiracal data vouches for its ability to do the job. But I believe N133 is finicky, hard to keep in tune and otherwise "high maintenance". But it sure does shoot when all the stars and planets are properly aligned. So I decided to try some other possibilities. I started with H322 and H4198 and got very good results and could make a case for either of them. I even had interesting results with Benchmark, but my recommendation above all others is IMR8208XBR. This is the most consistent, easy to use powder I've ever used. The physical properties of it are almost identical to H322 and it flows through my Harrell's powder measure flawlessly and does not require weighing of charges. With 66-gr. Euber FBs, 65-gr. Bart's BTs, and 65-gr. Berger BTs the acccuracy and consistency is unmatched.
308sako, hard to tell from your posts if you are interested in developing loads for competition or are just wanting to shoot some nostalgia loads and have some fun.
I have been doing some load testing the last few months with my 6 PPC, looking to go competitive with it this season (if I can learn to shoot as good as it does). N133 is, for sure, the go-to powder for the 6 PPC and empiracal data vouches for its ability to do the job. But I believe N133 is finicky, hard to keep in tune and otherwise "high maintenance". But it sure does shoot when all the stars and planets are properly aligned. So I decided to try some other possibilities. I started with H322 and H4198 and got very good results and could make a case for either of them. I even had interesting results with Benchmark, but my recommendation above all others is IMR8208XBR. This is the most consistent, easy to use powder I've ever used. The physical properties of it are almost identical to H322 and it flows through my Harrell's powder measure flawlessly and does not require weighing of charges. With 66-gr. Euber FBs, 65-gr. Bart's BTs, and 65-gr. Berger BTs the acccuracy and consistency is unmatched.
What is a good starting weight for H322, H4198 and IMR 8208 XBR in the 6ppc?
What is a good starting weight for H322, H4198 and IMR 8208 XBR in the 6ppc?
Reed and Boyd, great reads guys... Solid info for the new and not so new to Point-blank BR...
Fishbone, the ole statement of "work-up" is true but pay particular attention when using H322 in the lower end loads.. IMOP. 3150-3250.... Tunes-up perty solid.. Won't wreck cases "down there" either... "Tune out the vertical point" of
3210fps+ is generally the case... But I have had a few barrels that would shoot a DOT @ 3160-3180 and no load vertical issues. Go for a Light seating rifling mark 1/2 the width of the lands is a good medium... Go .002 to .003 in and out from this mark, believe ya can't go wrong...
But.......... H322 can "get ya" in the HEAT of Summer.... So, you may find that < 3200fps "can" shine in that Summer Heat too..!
Good luck,
cale