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The Range
Ammo & Reloading
.300 PRC Satterlee Test Results
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<blockquote data-quote="rockchalk06" data-source="post: 3978785" data-attributes="member: 40794"><p>I have no scientific data to prove or disprove his method, I just know there have been some decent results online I've found. As you can see below, I ran this test again with lower charge weights, and got more sporadic results. If I have a node, it at shots 9 and 10, but shots 9 and 10 are no wear close on paper, Exact opposite impact. Top row left to right. Nothing is close with this powder, bullet, depth setup. I'm officially saying that my barrel does not like a 230 grain A-Tip over LRT. Shame, I have a ton of it.</p><p></p><p>[ATTACH=full]352898[/ATTACH]</p><p>So based off my previous Satterlee test of N570, I loaded up 10 rounds of N570 at 78.9 grains. Shots 6-7-8 were close.</p><p>[ATTACH=full]352899[/ATTACH]</p><p></p><p>I loaded 10 rounds and fired 5 over a chrono at 100 yards and then 5 off the chrono at 300 yards. Group measured just over an inch with an SD of 16ish. Shot #4 was that flyer that punched out the bullseye. It was almost 25 FPS faster than the other 4. I marked that piece of brass and will put it aside to use as a fouler. Aside from that, I was kind of happy with that.</p><p>[ATTACH=full]352900[/ATTACH]</p><p> </p><p></p><p>Pushed out to 300, it opened up some. I took the chrono off for this test, but thinking back, I should have left it on. Wind started to pick up pretty decent with 10-12 MPH gusts, so I cannot tell you if wind played a factor in this or not.</p><p>[ATTACH=full]352901[/ATTACH]</p><p></p><p>I feel like I'm getting close. I decided to do some seating depth changes with the same powder charge of 78.9 grains. I was shooting .020" from jam with these and loaded 5 at .015" off jam, .020" off jam and .025" off jam. Anything shorter than .025" off jam, and I am getting more compression than I want. VV data calls for this load to be at 3.697 COAL and with my .025" off jam, I'm at 3.696" COAL. I don't think I've ever loaded a round longer than a .015" jump in my life. There isn't a ton of room to play with in my chamber with the 230 A-Tip.</p></blockquote><p></p>
[QUOTE="rockchalk06, post: 3978785, member: 40794"] I have no scientific data to prove or disprove his method, I just know there have been some decent results online I've found. As you can see below, I ran this test again with lower charge weights, and got more sporadic results. If I have a node, it at shots 9 and 10, but shots 9 and 10 are no wear close on paper, Exact opposite impact. Top row left to right. Nothing is close with this powder, bullet, depth setup. I'm officially saying that my barrel does not like a 230 grain A-Tip over LRT. Shame, I have a ton of it. [ATTACH type="full" alt="Screenshot_5.jpg"]352898[/ATTACH] So based off my previous Satterlee test of N570, I loaded up 10 rounds of N570 at 78.9 grains. Shots 6-7-8 were close. [ATTACH type="full" alt="Screenshot_6.jpg"]352899[/ATTACH] I loaded 10 rounds and fired 5 over a chrono at 100 yards and then 5 off the chrono at 300 yards. Group measured just over an inch with an SD of 16ish. Shot #4 was that flyer that punched out the bullseye. It was almost 25 FPS faster than the other 4. I marked that piece of brass and will put it aside to use as a fouler. Aside from that, I was kind of happy with that. [ATTACH type="full" alt="1677508373162.png"]352900[/ATTACH] Pushed out to 300, it opened up some. I took the chrono off for this test, but thinking back, I should have left it on. Wind started to pick up pretty decent with 10-12 MPH gusts, so I cannot tell you if wind played a factor in this or not. [ATTACH type="full" alt="1677508566952.png"]352901[/ATTACH] I feel like I'm getting close. I decided to do some seating depth changes with the same powder charge of 78.9 grains. I was shooting .020" from jam with these and loaded 5 at .015" off jam, .020" off jam and .025" off jam. Anything shorter than .025" off jam, and I am getting more compression than I want. VV data calls for this load to be at 3.697 COAL and with my .025" off jam, I'm at 3.696" COAL. I don't think I've ever loaded a round longer than a .015" jump in my life. There isn't a ton of room to play with in my chamber with the 230 A-Tip. [/QUOTE]
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