Satterlee Load Test, 6 5 Creedmoor 142gr HPBT H4350

[Music] hey welcome back everybody a Satterlee load test what is it and does it work well I've been playing around with the Satterly load test developed by I believe the gentleman's name is Scott Satterly and yeah I'm a little skeptical usually and when it comes to you know reloading you know III like to put things to the test and so we did that and well we've done that many many times now and does it work well short answer yeah it works works really good so let's take a look at what it is and then we're gonna take a look at some of the results that I got on the Creed Marybel so this is the chart here and I'm gonna zoom in on this real quick here and just sort of point out what we're talking about and how how I go about doing this test there are a few things to note real quick though first meet Carl so Carl Carl came over and took a reloading class and and actually I'm still working with Carl great guy and we have a lot more work to do but one thing that we found was we were doing this test on his right while he's shooting a 243 and we were getting crazy fluctuations on the chart and I I kind of scratched my head and talked how can this be possible because everything I've done in my testing it always usually it might have a little dip here but it usually runs up as you increase the charge weight as we're looking in his box of ammo that he reloaded we were finding that he had horny brass of Winchester brass and Remington brass and and they were all in order and as we were pulling these things out of here looking at the cases we were finding that every time we had a spike in pressure a massive spike in pressure or I shouldn't say pressure I should say velocity a massive spike in velocity he was a horny case or a remington case the rest of our all Winchester's and so a couple things to note it's really important to shoot from same lot number of brass and the same manufacturer obviously I did not think it would have that much of an impact on the velocity but we're talking near a hundred feet per second difference from shot to shot granted we were you know up a tenth of a grain up a tenth of a grain I would expect some variation obviously in the grain weight difference but but to see him go from you know I've got the notes so 2906 2832 2861 and then all of a sudden jump clear up to 29 40 and then back down to 28 58 and then 29 64 and every time we saw we saw a spike we'd look at that case a different brand of case so just something to be aware of all right let's zoom in on the chart here and see how I did this and this is actual data that I used on my on my rifle and my load development and I'll show you I put this in a graph in excel too so I'll let you take a look at that and it'll sort of paint the same picture so let's zoom in okay so first things first I always record everything that is important during the day that I do this so I'm shooting a 6.5 Creedmoor it's 54 degrees outside the pressure is 29.8 6 relative humidity is 72 142 green hollow-point boattail from Sierra H 4350 powder cartridge over a length from head to tip of the bullet is 2.8 1 0 and the chamber temperature is 55 degrees now that being said I keep the chamber temperature cooling down quicker by using one of these chamber chillers and we're going to have a video coming up on one of these I've been testing it for a few months and long story short it actually works it actually works pretty well I think so it gets you through the test faster definitely faster so okay all that being said we need to figure out where before we start this test where is our pressure you can see here the maximum charge according to the book is 41.9 grains of H 4350 that clearly in my gun is not because I ran this up to forty two point four grains and I never saw pressure in fact I have not found my pressure mark yet but nonetheless you can do it safely if you work your way up check for pressure and then once you find your pressure signs or start getting up there pretty high where the volume in the case is getting pretty full we can start the test so over here this is all of our velocity down here is all of our charge weights we start at forty one point five and we ended at forty two point four cold bore shot right here came out to let me get my notes cold bore shot was twenty seven fifty on the money and then we went to twenty seven thirty eight 27:44 2760 2773 twenty seven 77 82 83 84 and then up to 27 88 you can see here that what's going on is you have a lamp and and then you sort of have a little bit of a plateau here and then it starts to ramp back up again on this side over here what we're looking for is actually this little plateau so this here is a it's a velocity node right but it also turns out that this is an accuracy node in most cases that I found will actually in every case that I found so far once you find that node that plateau then you can go back and load a whole bunch of ammo to that spec forty two point two grains of H 4350 cartridge over a length and go out and shoot for some groups and also you can check for you know extreme spread standard deviation across many many shots so what I did because I took 20 rounds today and I shot 10 well I shot 20 but I shot 10 checking for the extreme spread standard deviation my average and this is what I came up with extreme spread of 10 standard deviation of 4 my average velocity was 2777 now there's a little bit of a difference here because I tested this here with a Magneto speed on the barrel but since I was also shooting for groups I set up a standard chronograph which is going to come in slightly slower and if you go back and review the video on the magneto versus a standard chronograph they because the chronograph the standard chronograph is out in front of the barrel you know 10 12 feet versus the magneto speed which is attached to the barrel so I'm slightly lower than my original test which is which is exactly what I expected to see but not by much 2777 versus 2783 they usually run about 5 6 7 feet per second difference from Magneto to standard chronograph so 10 shots though that is great and I was shooting well under 1/2 inch group at a hundred yards and all 10 shots and so I took the other 10 there and I was just blinking out a little bit further just shooting clay pigeons out at 200 yards just for some fun today so if you have never tried this and you really want to you know develop some great great ammunition that's got super numbers that standard deviation extreme spread keeping those numbers way down they can be a little bit overrated if you ask me but you know you don't want extreme spread of 50 because 50 feet per second you know low to high and a thousand yards equals inches and you know imagine shooting a mile at 50 feet per second difference or 75 feet per second difference that really adds up and you're gonna start missing targets so this actually works I was I was I've been pretty impressed with it and again I was kind of wanted to do this video for quite a while but I really wanted to shoot it out of my act li well don't in my a are didn't Creedmoor and of course we've done this now for several customers that come over into the reloading class and it's it's proven itself time after time after time so it's pretty pretty good I'm pretty confident again keep the chamber the same temperature and this little gadget here this chamber chiller we'll have a full review on this coming up I don't know in a week or two three something like that I do have some footage shot of this and it actually works out to different sizes and this thing works it it just helps you get the get there faster and keep that real consistent temperature but it does it faster and there's there's some tricks to it so we'll get into that another video but anyways let's take a look at just a real quick screenshot of a graph that I did and so you know here's here's the graph you can see you can graph it in Excel or you know any any graphing program out there that'll give you some charts it's pretty simple to do you know whatever works for you or you can just you know write it down on graphing paper and graph it that way if you're not good with Excel or you know or whatever whatever works right so but this test the Satterlee test is is a good it works it just works so anyways I guess that's all we have today and we've got some more videos coming up a quick update we're gonna have some a our scope testing going on this years of primary arms and so I'm running this thing through its paces we started that today we've got a couple other scopes coming attract optics is they said they'd be willing to throw their throats go part way and let us test that and so we're gonna be doing some of that I don't know if all the scopes will actually make it to a video because I don't like the batch other companies I'd rather just you know test them if they completely fall on their face well you know I'd rather not say anything at all but I will show you all ones that do pass and that do work so until next time thanks for watching [Music] [Applause] [Music]

Channel: Vaughn Precision

Views: 30,738

Rating: 4.9183674 out of 5

Keywords: Saterlee, Load Development, 6.5, Creedmoor, Creedmoore, charts, sierra, 142, custom, long range, long, range, Delta Optics, Delta scopes

Id: MV0TJK5guWk

Length: 12min 4sec (724 seconds)

Published: Fri May 11 2018