.300wm powder density , fouling and use of faster powders?

[Emouse]

So,....having experimented with a number of magnum and albeit slow burn powders many foul significantly. This is not to say they produce poor results but something is missing? Looking at QL and comparing load density faster powders can provide 80-90% fills and at least on paper far greater efficiency. To start: has anyone tried RL17 in the 300wm loading heavy i.e 208 AMAX and heavier??

Real world experience rather than guess work please.

 

[Aimsmall55]

R-17 is where your making a mistake imo. You'd be much better off with R22 or h1000.
Your best bet is 72.4 R22 for a 208 amax first. Secondly, I'd go with 75.5 to 76.5 H1000. However I think Reloader 22 will be your best bet

 

[1J04]

You'd be wise to listen to Aimsmall55. I put a lot of stock in his advice and have yet to be steered wrong. I've been a huge fan boy of RL22 for magnums for a long time. 7MM Remington Magnums, 7MM STW's, and 300 Win Mags with medium to heavy for caliber Bergers. Played with many powders for them and there's a reason I've got cases of RL22. It doesn't foul the shit outta your rifle and it smells nice.

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[wapiti16b]

R-17 is where your making a mistake imo. You'd be much better off with R22 or h1000.
Your best bet is 72.4 R22 for a 208 amax first. Secondly, I'd go with 75.5 to 76.5 H1000. However I think Reloader 22 will be your best bet

Aimsmall , which of the two powders you mentioned ( R22 & H-1000 ) is the least temperature sensitive ? , I've never used R22 so I am curious . My components are different , I'm currently using BERGER Hybrids 215 g in a 26 " barrel with H-1000 . What advantage will R22 provide ?
Thanks !

 

[Emouse]

Aimsmall,....thanks for the suggestion. I am already using RS70 which is same as RL22. Looking at the QL comparison RL17 is more efficient for nearly a 90% case fil. Vectan SP12 also looks very interesting. When loading heavy in 308 ( 208 AMAX), RL17 provided stunning performance.l

 

[MtnCreek]

There was a pre-scout thread about using Rx17 in 300wm with heavier match bullets. It may still be floating around somewhere. I don't remember the specifics, just that I was surprised by the performance the guy was getting with such a fast for application powder. I'd be careful though, R17 has been rumored to produce unexpected pressure spikes and I have witnessed something that may be similar to that when trying the 308/208/R17 loads that were discussed here by MTMarine. FWIW, H1000 has performed well for me and is relatively clean compared to H4831sc.