That’s awesome now I understand the sattlerlee test can’t wait to try it out my self and I also purchased the hornady tools to take the Wright measurements I’m ready to start reloading for my 308 😀 great video my friend
Thank you for showing how to use that Hornady chamber gauge! I see them all the time at stores and I’ve read about people measuring to lands, but I never understood how it was being done.
try taking the end of the Hornady plunger and filing it down to a rounded point then when it touches the base of the bullet the area it touches is much smaller and less room for variances. The bases of the bullets are not machined therefore not 100% 90deg. I found my variances for say 5 attempts are much smaller 😀
The numbers you’re getting aren’t a good example of the Satterlee test. What should happen is there should be a flat spot in velocity between the charges in the node even though the charges differ. For example it should like like this; 21.2gr (2690), 21.4gr (2711) 21.6gr (2711), 21.8gr (2719)...so in this example the node would be 21.5gr. Something is off maybe? Usually it’s evident that there’s a node in the test. That’s been my experience.
i go by velocity increase for powder charge, cause a bullet shouldn't be slower then a charge that's .2-.3 grains lower. example is if a 20 grain charge is pushing a bullet at 3000fps so that comes up to 150fps per grain of powder, so a 20.3 gr load should push it at 3045 fps then 20.6 gr should be 3090fps so that tells me powder charge node is burning at peak performance so sd and es spreads should come down to ur scale accuracy and case compacity. say ur scale is -/+ 0.1 grain ur es should be 30 fps since 150fps/per grain, divide 10 = 15fps/.1 grain error of the scale.
Ok im confused. If you did the test on different charge weights to see where the velocity flattened out to match your barrel. Why even shoot for groups until you figured this out? You can shoot into a dirt bank really. You only should care about the readings on your chrono at that testing point , not groups. Then go load up some at the charge weight that your gun leveled off at and shoot for groups with that? This guy explains it really good in his video. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-zKuTxo6zLFU.html
If it were me after your test id go back and load up 6 more bullets. 2 each 22.9, 23.0, 23.1 check velocity and SD. take the one the is the best out of the 3 charge weights and then go load some of that charge weight and shoot for groups. These will be the ones your barrel harmonics like the best. Then try playing around with bullet seating depth, etc with that charge weight.
