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October 24, 2011, 06:31 PM | #1 |
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RL25 w/ 85-87g bullets in 243Win
I just ran a propellant table for a mid-80s grain projo out of a 24" barreled 243Win running at 55,000psi ...and QuickLoad spit out RL-25 as the no-kidding-cat's meow for performance & clean burn.
That floored me as I regarded RL25 as waaaay too slow for that. Before I load up a ladder for next weekend, has anyone else used RL25 under anything but 105(+)grain bullets? |
October 25, 2011, 12:31 AM | #2 |
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Nope.
My QL suggests it would give about 200fps slower results than some faster powders. Super safe pressure for sure, but sub-par velocity. |
October 25, 2011, 05:16 AM | #3 |
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I like Reloder 22 in the .243, but then I don't have Quickload and I generally run 100 grain bullets in that caliber.
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October 25, 2011, 05:35 AM | #4 |
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Here's what QL spit out:
Cartridge: .243 Win. Bullet: .243, 87, Hornady V-MAX 22440 Cartridge O.A.L: 2.732 inch Barrel Length : 24.0 inch Case Volume 55.1gr H2O (My RP Cases from some time ago) Matching Maximum Pressure: 55000 psi Just the top dozen or so... sorted on velocity Note RL25's position in the mix: Code:
POWDER Wt(gr) Fill% Velfps PmaxPsi Burn%) BT (ms) PmuzPsi Vihtavuori N570 55.2 111.0 3,252 55,000 91.6 1.1434 12,962 Hodgdon Retumbo 54.4 115.0 3,247 55,000 99.2 1.1383 12,218 Norma MRP 49.3 100.0 3,242 55,000 98.7 1.1458 12,042 Reloder-25 50.6 108.0 3,242 55,000 99.8 1.1385 11,707 Reloder-50 60.4 118.0 3,238 55,000 91.7 1.1605 13,011 Norma MRP 2 52.1 110.0 3,233 55,000 96.9 1.1498 12,191 Hodgdon H870 57.3 118.0 3,229 55,000 93.9 1.1471 12,632 Vihtavuori N560 49.0 102.0 3,225 55,000 95.6 1.1420 12,104 RmSht(Big Boy) 52.6 104.0 3,213 55,000 96.7 1.1384 11,925 PB Clrmt PCL517 52.7 105.0 3,212 55,000 96.7 1.1385 11,914 Vectan SP 12 52.6 104.0 3,212 55,000 96.8 1.1387 11,901 IMR 7828 SSC 48.6 100.0 3,211 55,000 96.0 1.1329 11,760 IMR 7828 48.6 106.0 3,211 55,000 96.0 1.1329 11,760 Raufoss RA15 48.6 102.0 3,207 55,000 97.5 1.1470 11,758 Reloder-22 48.6 102.0 3,207 55,000 97.5 1.1470 11,758 Bofors RP5/NP 48.6 102.0 3,207 55,000 97.5 1.1470 11,758 Accurate MAGPRO 51.2 102.0 3,206 55,000 94.0 1.1509 12,064 Winchester WXR 48.8 105.0 3,205 55,000 97.4 1.1479 11,754 Are there significant differences/updates in them for better prediction out there? Last edited by mehavey; October 25, 2011 at 05:46 AM. |
October 25, 2011, 12:19 PM | #5 |
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Mine is v3.2. The problem is the fill. I doubt you could get 50gr stuffed into the case.
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October 25, 2011, 12:27 PM | #6 |
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I don't think quikload can predict what the pressures will be when powders start getting compressed.
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October 25, 2011, 12:36 PM | #7 |
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Actually, I have discovered that a "106%" fill in QuickLoad is an exact case fill with no compression
(when vibrated down). But I will recheck tonight using the actual powder. My other fascination was w/ the (99.8%) calculated Burn Completion for RL25. So if someone has better/revised Energy density/burn rates, progressivity, factors, etc, I'd appreciate it. Last edited by mehavey; October 25, 2011 at 01:27 PM. |
October 25, 2011, 03:40 PM | #8 |
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I've never used QL but the last powder I want to use in my 243 or 243AI would be R-25 with 80 to 90gr bullets.
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October 25, 2011, 04:19 PM | #9 |
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My favorite powder for my 243 was H450. It is/was about as fast as Reloder 19. I try to avoid stick powders. Can't say if Reloder 25 would be, but I am sure Reloder 19 would be a good choice.
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November 6, 2011, 08:27 AM | #10 |
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Any data on RL 17 or hodgdon Hybrid V 100? I'm getting some really impressive velocity out of the v100 on a 43.5 gr charge weight and have some test loads ready to go using speeer 85gr BTSP's. Data from spear shows 3300 and some change with that load
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