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November 9, 2018, 12:45 AM | #1 |
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Join Date: December 25, 2017
Posts: 39
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First chrono 25-06 and super impressed!!!
Hey everyone,
I just want to say thank you for everyone that has helped me along the way with my reloading venture, which has finally become a hobby. Nothing but pure passion for this hobby and I’m so excited to hopefully get my first deer this year with my own handload that was made and tested by myself. Well tonight I finally hooked up my new barrel chrono and tested my 25aught load. Here is the load: Hornady 117gr SST IMR 4350 @ 50 grains Remington #9 Large Rifle Primers My COL were approx 3.135-3.140 I hope my picture come through. 3033fps AVG These rounds were fired out of a 22” Savage 110. I wish I had a 24”. Hopefully soon. I was impressed at these velocities out of a 22” since my books told me these would be 24” velocities and I double checked my measurements so I am very happy! Wondering what it may have been with a 24”. Maybe 3100-3125fps?? Thanks again and Godspeed |
November 9, 2018, 12:48 AM | #2 |
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Join Date: December 25, 2017
Posts: 39
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Sorry my uploads from my phone keep saying failed. Wanted to show you the 3033 reading on my chrono
Also happy with the accuracy. Around 1-1.25” at 100 yards and .5-.75 at 50. I’m no sniper and it’s a cheaper rifle and again only my second or third load with this caliber. Tried 48-50 grains of IMR 4350 and got similar accuracy so I will stay with 50 for the added boost and trajectory |
November 9, 2018, 01:07 AM | #3 |
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Join Date: December 25, 2017
Posts: 39
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Hope this works.
If photo doesn’t come through please let me know. I uploaded from iPhone to computer and used paint to shrink it. There needs to be a faster modern way lol haha
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November 9, 2018, 05:17 AM | #4 |
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Join Date: June 23, 2013
Location: Central Taxylvania..
Posts: 3,609
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Always glad to hear good results from a happy handloader.
And yes, great satisfaction comes with bringing home the deer with something you've made yourself. Good luck! Stay safe!
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November 9, 2018, 09:25 AM | #5 |
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Join Date: March 4, 2005
Location: Ohio
Posts: 21,061
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Sounds like you are having fun.
Any time you get higher velocities than the load data shows, you may have a tight chamber, tight barrel, lower capacity brass, hotter primer or just a faster lot of powder than the load developer had. This will mean your peak pressure is higher than the test loads were. This all assumes the accuracy of the chronograph, but the reputation of the Magnetospeed is good and Bryan Litz likes them, so the numbers are probably close. You can estimate the peak pressure difference a couple of ways. My back-of-the-napkin method said your pressure was about 5% over what the test load pressure was (raising the ratio of actual velocity over the expected velocity to a power of 2.3, then subtract 1 and multiply that result times 100 to get percent). Tweaking QuickLOAD to match Hodgdon's data online for the shorter 117-grain Hornady boat tail soft point bullet seated about 0.030 longer than yours and then substituting your bullet and COL also gives me about 5% more pressure than the test load, so my napkin method was close in this instance, and 5% increase turned out to be about 1.5% above SAAMI maximum. 1.5% is smaller than the accuracy limits of the best pressure measuring methods known, so you can just ignore it. I would, nonetheless, be keeping an eye peeled for longer-term signs of excessive pressure, like having your primer pockets get loose in fewer than about 5 reloads. That would be an indication you should back the charge down a little bit. But if your cases last ten reloads without loose primer pockets or splits anywhere, it's very unlikely you have any issue. Incidentally, I tried three ways of getting a 22-inch barrel to your velocity in QuickLOAD, and when I changed the barrel to 24 inches these yielded 3096, 3096, and 3097 fps, respectively, so I think you can bank on about 31-32 fps per inch of barrel addition to your muzzle. That's a reasonable number considering the expansion ratio of your gun.
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November 9, 2018, 04:59 PM | #6 |
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Join Date: February 20, 2000
Location: Colombia, SC
Posts: 745
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I use the same load except Accurate 4350 in my 25/06 Sendero. But the load is a tad hot, I was planning on going to 49 grains next time.
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November 10, 2018, 11:01 PM | #7 | |
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Join Date: December 25, 2017
Posts: 39
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Quote:
Thanks again for your post and I want to use that FPS program “QuickLoad” you mentioned. Sal Last edited by Safaripolice; November 10, 2018 at 11:06 PM. |
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November 11, 2018, 08:44 AM | #8 |
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Join Date: November 21, 2013
Location: New Hampshire
Posts: 1,695
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I've been using chronographs for years as an assistance tool in load development. They are a valuable tool to help you track velocities, and as you gain data you can begin to compare trends of higher precision and velocities. Example, after testing over 150 loads in my R700 308 Varmint I came to the conclusion that the 168 gr match bullet was showing the most consistent precision at 2540 fps. Did not matter weather is was the Sierra SMK or the Nosler Custom Comp. Both bullets loved this velocity. Precision is all about finding that best suited accuracy "node" and barrel harmonics. There's much more to consistency than just finding a "good load" of exactly "XX.X" charge weight of "brand X" powder. A proven precision load shot in June will most likely NOT provide the same precision in November from ambient temp instability.OP your up around max fps especially given the fact your data is from a 22" bbl. Most of the published data is derived using a 24" bbl. You can expect about a 20 - 25 fps difference per inch of barrel in velocities. I almost never find the best precision loading to max. Many of my most consistent loads were actually mild.
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"To be old an wise you must have been young and stupid" Last edited by Road_Clam; November 11, 2018 at 08:52 AM. |
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