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Posted: 8/17/2012 11:26:46 AM EDT
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Newb reloader here. Made a dozen 24.3 grain,SS109s as my very first loads, Taking it slow and easy and going back to the book when I need to, I enjoy it!
How many test rounds y'all make up when coming up with your loads? |
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How many test rounds y'all make up when coming up with your loads? Wow that's an open question. What firearm are we working this load up for? What will be the intended use of this ammo/load? There are too many variables. You need to narrow it down a little. Then of course you will get the ultimate answer which is how ever many it takes to achieve you goal. |
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Quoted: Newb reloader here. Made a dozen 24.3 grain,SS109s as my very first loads, Taking it slow and easy and going back to the book when I need to, I enjoy it! How many test rounds y'all make up when coming up with your loads? You left out a couple of important bits of info. What powder, cases, and primer? OAL? (over all length) For every powder I try about 25, I begin at the start load (lowest charge listed) and work up watching for pressure signs.
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look at the min to max charges and split that in to about .3 grain increments .2 if the range is smaller.
Then i load up 10 of each increment and shoot from min to max looking for pressure signs and groups. my load work ups have been anywhere from 30 to 100 or so rounds. the most annoying thing was when my load work ups got all mixed up on the way to the range. luckily there were still a couple of each group properly labeled so i could still test for pressure. |
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It depends on how expensive the bullets are.
Match grade bullets, I'll make 5 of each charge weight with 5 different charges. 25 rounds total. That's just the 1st round of testing. Cheap mil pulled bullets, I'll make at least 10 of each weight with 5 charges. 50 total. |
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I work up a round by loading in 0.5gr increments from the low to high end of the given safe powder range. I make 10 round batches of each charge.
Then I shoot them over a chrono and compare the results using OnTarget to measure the groups and accuracy. Then I load in 0.2gr increments around the best group. I make 10 round batches of these and shoot them over a chrono too. The best group of that test is the winner. If two of the groups are close, I load 10 more of those two charges and shoot them at a farther distance. The groups open up a little as you move out, so this usually decides the tie. For example, I may load 25.0gr, 25.5gr, 26gr, 26.5gr, and 27.0gr and shoot them. If 25.5gr is the tightest group, then I load 25.2gr, 25.4gr, 25.6gr, and 25.8gr and shoot them. At 10 rounds in each batch, that is 90 to 100 rounds minimum, |
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Quoted:
Quoted:
Newb reloader here. Made a dozen 24.3 grain,SS109s as my very first loads, Taking it slow and easy and going back to the book when I need to, I enjoy it! How many test rounds y'all make up when coming up with your loads? You left out a couple of important bits of info. What powder, cases, and primer? OAL? (over all length) For every powder I try about 25, I begin at the start load (lowest charge listed) and work up watching for pressure signs. Very well, powder is H335, No 41 primers, LC once fired brass. I don't expect super accuracy with pulled M855 projectiles, but do want to create optimal load for multiple firearms, you could say a good general purpose round. |
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Quoted: Sounds good.Quoted: Quoted: Newb reloader here. Made a dozen 24.3 grain,SS109s as my very first loads, Taking it slow and easy and going back to the book when I need to, I enjoy it! How many test rounds y'all make up when coming up with your loads? You left out a couple of important bits of info. What powder, cases, and primer? OAL? (over all length) For every powder I try about 25, I begin at the start load (lowest charge listed) and work up watching for pressure signs. Very well, powder is H335, No 41 primers, LC once fired brass. I don't expect super accuracy with pulled M855 projectiles, but do want to create optimal load for multiple firearms, you could say a good general purpose round. Seated to mag length?
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Quoted:
Quoted:
Sounds good.Quoted:
Quoted:
Newb reloader here. Made a dozen 24.3 grain,SS109s as my very first loads, Taking it slow and easy and going back to the book when I need to, I enjoy it! How many test rounds y'all make up when coming up with your loads? You left out a couple of important bits of info. What powder, cases, and primer? OAL? (over all length) For every powder I try about 25, I begin at the start load (lowest charge listed) and work up watching for pressure signs. Very well, powder is H335, No 41 primers, LC once fired brass. I don't expect super accuracy with pulled M855 projectiles, but do want to create optimal load for multiple firearms, you could say a good general purpose round. Seated to mag length?
I trimmed to 1.755 on the first ten, and they barely clear the magazine lip. I will readjust my trimmer to get the recommended 1.750 and then readjust the die to get a little more clearance in the mag. |
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I am guessing you are doing this trimming to align the canalure with the case mouth so you can crimp them. May I suggest that you just seat the bullet to fit the
magazine and don't worry about the crimp. When you range test them take your calipers with you and purposely eject a few live rounds and measure them. I don't crimp any of my .223 AR ammo and have never had any problems not even when there was a failure to feed and the soft point was smashed flat the bullet still did not move in the case. |
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