Quick Load Help

[tyeager2964]

So I bought a magneto speed sporter and finally got to play today. I have an accurate load for my 7 mm RM with 160 gr Sierra but I knew it was slow with only 60.5 of 7828 behind it. I calculated it at 2700 fps with drop data and the new toy confirmed 2681 avg with an sd of 9. It shoots great but what's the point of a 7 mag at that velocity.

Long story short I loaded up my final 6 bullets at 65 and 65.5 grains of IMR 7828. They both shot sub .75 MOA which is all I'm looking for really but I dont have any more to load to chrono. I dont have any pressure signs but that's 1 grain over book max (depending on book).

Can anyone with quick load give me an estimated velocity guess.

Sierra SPBT 160 gr model #1920
IMR 7828
Federal 215 large mag primer
Hornady cases
Loaded CBTO is 2.726 (fit in Tikka mag)
24" barrel

I dont want to buy more 7828 if I cant get to 2950 or so

Any advice on my next powder? Its likely going to be 4831sc or the newer enduron 7977. I'm ideally looking for 3000 give or take with a 160gr pill

 

[Pootros]

You considered H1000? I have had great luck with it in all magnums. Low SD and I have not had it be temp sensitive. It is also relatively easy to find right now.

 

[HonkeyMcGee88]

H1000 is always a good go to for pretty much any magnum.

That is what I would try next.

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[tyeager2964]

I actually continued a previous ladder I had stopped above book max and have found I can get to 2900-2980 with 7828. I dont have any pressure signs so next will just be OCW testing in the 66 to 67 grain area. Sierras manual has more room to go as they tested up to 68 grains.

H1000 has always interested me but for now I will probably stick with 7828