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June 21, 2018, 12:00 PM | #1 |
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Load Recommendations for 9mm 147gr.
i have been trying to work up some loads for my springfield 5.25 for IDPA matches. i have been shooting 124's for a long time, but i have been convinced to try the 147's. Does anyone have any load recommendations? i typically load my 124's with N320, and i loaded a few test rounds with the 147's over 3.3grains of N320 @ about 927FPS. I got some slightly flattened and cratered primers.... If these were self defense loads i would be good with it, but i intend to shoot hundreds of these a month. So if anyone has any pet 9mm loads with 147gr projectiles, i would appreciate the input.
Last edited by litenite99; June 21, 2018 at 12:51 PM. |
June 21, 2018, 12:34 PM | #2 |
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Mixed cases, WSP primers, OAL 1.145
Montana Gold 147 CMJ, 3.7 gr N320 Bayou poly coated 147, 3.4 gr N320 Either runs 129-134 Power factor in 3 G17's, 2 1911 9mm's, 2 CZ-75's and a M&P Pro. I even use the MG bullet version in my AR9 PCC---runs 100% at around 131 PF. YMMV, "Professional driver on closed course". "Do not try this at home" etc. etc. |
June 21, 2018, 12:54 PM | #3 |
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Bill, do you notice any velocity difference on the poly coated bullets? I won 1,000 rounds of coated bayou bullets some time ago at a small competition, but i have not loaded a single one. I had so many berry's 124's on hand thats what i have been loading.
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June 21, 2018, 01:56 PM | #4 | |
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Quote:
3.7 N320 with a MG 147 and 3.4 N320 with a Bayou coated 147 delivered the same velocity. What bullet and OAL are you trying with 147's? I'm a bit surprised you are getting 143 PF and pressure signs at 3.3 gr N320. |
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June 21, 2018, 02:53 PM | #5 |
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the desired OAL that i load to is 1.145. the OAL variation on my dillion with mixed brass ranges from 1.139-1.149. I fired them through my M&P shield also with similar pressure signs. I just wanted to make sure it wasnt an issue with the barrel dimensions on the springfield. now from what i saw, the flattening of the primers was slight along with the cratering. i was actually just wondering if my "crimp" is too tight. I left my maching set up just like i had it for the 124's, and loaded the test rounds with the 147's. the only adjustment was for the powder charge, but i did notice that the bell on the cases didnt hold the 147's without me holding the bullet on the case when i seat them. I did pull one, before firing any, just to make sure it didnt deform the copper plating, and it was good no scratches or dents. i checked powder weight on every other round when loading test rounds and all were 3.3-3.4grains. i guess the bigger variables i have with the dillion is the OAL... I cant seem to get that tolerance gap to close any. I dont know how much of a difference .010" makes on pressure in 9mm, but thats also something i was considering.
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June 21, 2018, 03:18 PM | #6 |
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972 fps with a 147 is a power factor of 142.9. That's plenty hot, especially with a powder as fast as N320. Try dialing it back to 130-132 PF. That's just under 900
fps. If you want to stay that hot, try N340. Still a bit baffled about the 972 fps with a 3.3 charge weight-- |
June 21, 2018, 07:34 PM | #7 |
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Bill I was getting an average of 927FPS that's why I was surprised to see pressure signs.
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June 21, 2018, 09:18 PM | #8 |
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I read that the only adjustment you made was powder charge. Did you check OAL ?
972 is really fast for a 147. David Sent from my Pixel 2 using Tapatalk |
June 22, 2018, 03:18 PM | #9 |
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David I check the OAL and it ranged between 1.139-1.149 with charge weight of 3.3grains and chrono at 927 FPS
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June 22, 2018, 06:58 PM | #10 |
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Most 147gn defensive ammo is clocking 950-1000fps.
Golddot and HST both advertise speeds in this range. |
June 22, 2018, 09:18 PM | #11 |
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The chart shows 3.3 for a 145 RN Max for 915 fps.
You are there. Bullet9,4 g / 145 grRN, H&N C.O.L. 29,0 mm / 1.142 inch PowderStarting load Maximum load Type Weight Velocity Weight Velocity[g][grs][m/s][fps][g][grs][m/s][fps]N3100,172.62427940,213.3279915 Can't get it format. Max charge for 147 XTP is 3.9 for 978 fps. Go for a slower powder for the 147 great bullet. David |
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