Hello all, I have a really quick question..
I noticed several 300 Whisper supersonic H110 recipes for the 200gr Sierra Matchking which got me interested.
I contacted Hodgdon about this and the responce was:
Quote:
H110 should never be used in reduced loads. It is a slow burning, hard to ignite powder that does not like low pressure conditions. It will either be massively overpressure or massively under pressure.
Mike Daly
Customer Service Manager
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My experiment was this:
I wanted to see how much powder capacity was left when I loaded a Lapua 200gr D166 so I loaded up a fired case, measured and cut. Note--the case was fired with 6gr of trailboss and a 220gr Hornady RN bullet and then ran through the resizer die to make sure everything was back to "normal".
Needless to say, the TB didn't do much to change the case dimensions.
I then filled the case with H110 and measured.
Now here are my questions:
1) Since my 454 casull calls for H110 charges as high as 30gr with a 300gr bullet would my 200gr bullet be safe to use with 18gr? Yes, I know the pressures are completely different in these two cartridges.
I believe that JD Jones called for 13 gr and stated an average velocity of 1350fps or something in that range for the 200gr Sierra Matchkings. If that's the case then we could be looking around 1600fps or so with the added 5gr?
2) THEORETICALLY....if it would be safe what type of velocities would we be talking about? Mainly out of a 20" bbl Rem. 799 bolt action.
3) What, if any, other powders exist that would be a better alternative? I've read that Lil Gun might be a good powder but I have no idea.
I really don't feel like blowing up myself and my rifle by experimenting with this so if anyone can help, as well as recommend a good reloading program, I'm all ears.
Thanks for any help.
Scott
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