Chronographed some loads

[Alderman]

I ran a few different Nosler loads across the chronograph yesterday and find I am running 100-150 fps slower than book speeds.
I notice a lot of the test barrels are 24"-26" so feel I am in the right ballpark with my 22" barrels.
It would be nice to see the loading manuals show results with multiple barrel lengths.


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[mjcmichigan]

Speed sounds fine for 4” in barrel length


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[RuralPlural]

I found the same recently when comparing my 7mm-08 loads. Aren’t the vast majority of commercial factory barrels 22”?
If so, Nosler using 24” barrels in test is frustrating at best, as we can’t really use the manual for benchmarking.


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[Divernhunter]

Wait until you use Nosler brass and get slower speeds than with other brands of brass. Hint Win/Rem/Fed and Weatherby are in the middle. Hornady brass gives the most speed.
All these loads are the exact same length/primer/powder/bullet and loaded at one sitting. I found this to be true with several different cartridges.

 

[FOTIS]

What loads and primers

 

[FOTIS]

JBm ballistics.Com

 

[SJB358]

The manuals are guides at best. All of the differing components and throating and just barrels themselves would be exhausting to test. I believe the books do a great job as it is. Subtract 25 FPS for every inch less or more and generally work in those parameters. Not being a downer but it’s handloading and never an exact science.

 

[Cleveland48]

What gets me with nosler is the 26” test barrel on the 9.3x62 data. I’m mean who actually has a 26” barrel on a 9.3x62 lol. But most companies use 24” test barrels when most factory rifles are 22”. I just use the data as a starting point, and work my way up until pressure signs. And for the 9.3x62 I just use all the info from John Barnes on 24hour campfire. He has had a lot of his loads pressure tested and loads to 30/06 pressure limits in rifles with good actions. If anyone is s future 9.3 owner be sure to check out some of his data.


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