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Posted: 12/14/2013 7:33:52 PM EDT
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Using the Lee FCD. I tried to set it up as per the instructions in Baboo's tutorial. One thing I noticed that seemed to differ from his, was that mine shows the gaps between the grippers the case. I didn't see that on his. I backed off the crimper to just under a half-turn for #3. The other two were at just over half-turn as per his notes. This is for plinking ammo for use in ARs. Brass is FC head stamp, untrimmed after first firing, all under 1.750. I had to give it a light chamfer and deburr to keep it from scraping the copper off the bullet. COAL is 2.220" (closer to 2.218, but I'll dial it in). Bullet is Hornaday 55 gr FMJ BT. Any comments? 
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Using the Lee FCD. I tried to set it up as per the instructions in Baboo's tutorial. One thing I noticed that seemed to differ from his, was that mine shows the gaps between the grippers the case. I didn't see that on his. I backed off the crimper to just under a half-turn for #3. The other two were at just over half-turn as per his notes. This is for plinking ammo for use in ARs. Brass is FC head stamp, untrimmed after first firing, all under 1.750. I had to give it a light chamfer and deburr to keep it from scraping the copper off the bullet. COAL is 2.220" (closer to 2.218, but I'll dial it in). Bullet is Hornaday 55 gr FMJ BT. Any comments? <a href="http://s159.photobucket.com/user/mustangduckk/media/IMG_4039_zpsdf9ea52e.jpg.html" target="_blank">http://i159.photobucket.com/albums/t149/mustangduckk/IMG_4039_zpsdf9ea52e.jpg</a> I would seat the bullet a little further so the crimp in the cannelure more. Don't worry about the gaps, they will not effect performance. Hard to tell from the pics but #2 looks like a good crimp. 3 looks to light, 1 would probably be ok. |
| I tend to crimp more like your #3. For me, that's how I set it for my plinking and accuracy rounds. The crimp you have in 1&2 is closer to factory ammo, but they crimp harder to prevent setback from harsh handling in autoloaders. This may affect accuracy though, as it may be enough to deform the bullet. If you really want to know what works, load up 10 identical rounds, powder charges weighed to .1 grains, then crimp 5 heavy and 5 light. Fire them for grouping and let the rifle and paper tell you what works. |
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Am I understanding you correctly in that you didn't trim your brass? If so, that's gonna be a big problem. The crimp die relies on all brass being the same length. He's using the Lee Factory Crimp Die, which is not trim length dependent. A major reason it's so popular. |
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He's using the Lee Factory Crimp Die, which is not trim length dependent. A major reason it's so popular. Quoted:
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Am I understanding you correctly in that you didn't trim your brass? If so, that's gonna be a big problem. The crimp die relies on all brass being the same length. He's using the Lee Factory Crimp Die, which is not trim length dependent. A major reason it's so popular. Ahh, I see said the blind man. |
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Quoted: Using the Lee FCD. I tried to set it up as per the instructions in Baboo's tutorial. One thing I noticed that seemed to differ from his, was that mine shows the gaps between the grippers the case. I didn't see that on his. I backed off the crimper to just under a half-turn for #3. The other two were at just over half-turn as per his notes. This is for plinking ammo for use in ARs. Brass is FC head stamp, untrimmed after first firing, all under 1.750. I had to give it a light chamfer and deburr to keep it from scraping the copper off the bullet. COAL is 2.220" (closer to 2.218, but I'll dial it in). Bullet is Hornaday 55 gr FMJ BT. Any comments? http://i159.photobucket.com/albums/t149/mustangduckk/IMG_4039_zpsdf9ea52e.jpg Case 3 has the best crimp. Cases 1 and 2 are over crimped, but ok to shoot. |
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Case 2 has the bullet seated to the proper "mid cannelure" depth I like to crimp to. Case 3 has the best crimp. Cases 1 and 2 are over crimped, but ok to shoot. Quoted:
Quoted:
Using the Lee FCD. I tried to set it up as per the instructions in Baboo's tutorial. One thing I noticed that seemed to differ from his, was that mine shows the gaps between the grippers the case. I didn't see that on his. I backed off the crimper to just under a half-turn for #3. The other two were at just over half-turn as per his notes. This is for plinking ammo for use in ARs. Brass is FC head stamp, untrimmed after first firing, all under 1.750. I had to give it a light chamfer and deburr to keep it from scraping the copper off the bullet. COAL is 2.220" (closer to 2.218, but I'll dial it in). Bullet is Hornaday 55 gr FMJ BT. Any comments? http://i159.photobucket.com/albums/t149/mustangduckk/IMG_4039_zpsdf9ea52e.jpg Case 3 has the best crimp. Cases 1 and 2 are over crimped, but ok to shoot. Case #3 is about the crimp I use on my 77 GR SMKs. |
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