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Posted: 7/9/2018 12:31:04 AM EDT
[#1]
nope, but 748 works well with 55-65gr
TAC or 8208 for 77gr |
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Posted: 7/9/2018 9:21:25 AM EDT
[#2]
Quote HistoryQuoted:
nope, but 748 works well with 55-65gr TAC or 8208 for 77gr |
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Posted: 7/9/2018 9:24:02 AM EDT
[#3]
^^ Yup, for me 748 has worked good with 55-60gr bullets. I tried it on some 65gr and accuracy (precision) sucked.
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Posted: 7/10/2018 1:55:26 PM EDT
[#4]
I use TAC for my 77g loadings.
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Posted: 7/10/2018 6:33:13 PM EDT
[#5]
Quoted:
Anyone use this powder to clone MK262? I just loaded some rounds to max load from the hornady manual (25.5 grains)and got 2767 FPS from my 18" BA premium barrel. I only chronod the load and haven't shot for accuracy but I'm hoping for good results.  Cloning Mk262 - Winchester 748 & 760 |
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Posted: 7/11/2018 1:27:22 PM EDT
[#6]
I use:
Varget RE-15 VihtaVuori N140 H4895 IMR-8208-XBR for all bullets weighing 68+ grains in .223. You can add Norma 203-B to the list because it's basically equal to RE-15. The only ball powders I would consider would be TAC or AA-2520. I don't like BL-C (2) in anything, CFE-223 is basically identical to BL-C (2) on the burn charts and powder charges so I haven't bothered even trying it. |
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Posted: 7/11/2018 5:04:06 PM EDT
[#7]
I currently use 8208xbr and have used TAC in the past
check with @popnfresh that's one of his favorite powders so I'm sure he'll chime in with his results. |
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Posted: 7/11/2018 9:11:07 PM EDT
[#8]
Quote HistoryQuoted: JRB has an entire series on this. Below video is 748 and 760.  https://www.youtube.com/watch?v=DHD7uiomZr4 |
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Posted: 7/12/2018 4:05:56 AM EDT
[#9]
Quote HistoryQuoted:
I currently use 8208xbr and have used TAC in the past check with @popnfresh that's one of his favorite powders so I'm sure he'll chime in with his results. I use 26.2gr W748 with 55gr 2267s for 2950fps out of my 18" I use 24.5gr W748 with 77smk for 2690fps out of my 18"(don't really use 77s much, I stick with 55fmjs and 90smks) |
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Posted: 7/12/2018 11:25:20 AM EDT
[#10]
pretty good (imo) thread from a couple years ago RE MK262 , I didn't reread it to see if OP's Win748 was covered.
Adding as I always try to remember to with this clone ...... be careful, follow reloading principles, very commonly MK262 threads end up exceeding max book values, don't assume what works in one rifle/reloader combo will be safe in your rifle with your reloading process. XBR works better than TAC and others in my stuff with Nosler CC 77g's, when I developed mine I didn't have CFE to include in the tests - if at some point I need to redevelop I intend to include it the next time, never considered 748. |
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Posted: 7/16/2018 12:54:40 PM EDT
[#11]
I use 8208xbr for 77 gr bullets.
I get more velocity from TAC, but worse accuracy. |
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Posted: 7/16/2018 10:56:49 PM EDT
[#12]
Hard to get as fast as real mk262.
I have done some cfe223 loads. Base GI BH 04 mk262 , 20 in GI 1-7 twist A2 bbl. 70F. AVG 2807fps. CFE , LC case, cci41, 77Nosler. 23.5: 2540 avg 23.8: 2560 24: 2611 24.2: 2626 24.5: 2672 No pressure issues, haven't tried any higher loads. To get 2800 would prob take 25-25.5 gr. |
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Posted: 7/16/2018 11:39:15 PM EDT
[#13]
Quote HistoryQuoted:
Hard to get as fast as real mk262. 
I shot BH MK262 back to back with my 8208xbr loads and I bested it by 14 ft/sec avg and my es/sd was nearly half of the BH load. test was with a lab radar so I trust the results. craziest part was the primers on my load looked perfect and the bh load looked like it was pretty warm! flat primers and slight extractor bend on the rim. my load was 23.2gr many people chase the next node which is ~24gr |
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Posted: 7/18/2018 5:53:11 PM EDT
[#14]
Quote HistoryQuoted:
Try 8208xbr
I shot BH MK262 back to back with my 8208xbr loads and I bested it by 14 ft/sec avg and my es/sd was nearly half of the BH load. test was with a lab radar so I trust the results. craziest part was the primers on my load looked perfect and the bh load looked like it was pretty warm! flat primers and slight extractor bend on the rim. my load was 23.2gr many people chase the next node which is ~24gr Quote HistoryQuoted:
Quoted:
Hard to get as fast as real mk262.
I shot BH MK262 back to back with my 8208xbr loads and I bested it by 14 ft/sec avg and my es/sd was nearly half of the BH load. test was with a lab radar so I trust the results. craziest part was the primers on my load looked perfect and the bh load looked like it was pretty warm! flat primers and slight extractor bend on the rim. my load was 23.2gr many people chase the next node which is ~24gr Buddy tried the TMK version and they picked up ~30fps over the SMK, but I've never loaded the TMK and can't verify my load would scale in the same fashion. |
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Posted: 7/19/2018 12:09:29 AM EDT
[#15]
Quote HistoryQuoted: I've matched BH MK262 with 23.6gr of 8208 XBR in once fired LC brass. Measured same day in same barrel, BH was ~2650 as were my handloads. Buddy tried the TMK version and they picked up ~30fps over the SMK, but I've never loaded the TMK and can't verify my load would scale in the same fashion. For those interested. LC09 1x case 23.2gr 8208xbr wolf SRM Nosler 77 CC 2.245" Light crimp from Lee FCD 2589 ft/sec 14.5 larue stealth |
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Posted: 7/19/2018 6:07:21 AM EDT
[#16]
Quote HistoryQuoted:
Curious if your brass/primers looked better than the BH load as well? For those interested. LC09 1x case 23.2gr 8208xbr wolf SRM Nosler 77 CC 2.245" Light crimp from Lee FCD 2589 ft/sec 14.5 larue stealth Quote HistoryQuoted:
Quoted: I've matched BH MK262 with 23.6gr of 8208 XBR in once fired LC brass. Measured same day in same barrel, BH was ~2650 as were my handloads. Buddy tried the TMK version and they picked up ~30fps over the SMK, but I've never loaded the TMK and can't verify my load would scale in the same fashion. For those interested. LC09 1x case 23.2gr 8208xbr wolf SRM Nosler 77 CC 2.245" Light crimp from Lee FCD 2589 ft/sec 14.5 larue stealth |
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Posted: 7/19/2018 10:48:04 AM EDT
[#17]
23.1 ar comp 2.250 75gr Hornady 2740 fps 3/4 to 1" at 100 no pressure signs.
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