I have two good loads for my Duece, but was curious about Win.748. It shows a much higher velocity. My accurate load is with Accurate 2015. It is clocking 2908 mean. Anyone found 748 to be significantly faster and still accurate? Thanks. T
Try a case tamped as full as you can get it of Win 748 and a 40 grain
Sierra Blitz King. Should be around 3275 fps. Another option for a 40
grain bullet is 24.0 grains of H322 with a velocity of around 3,500 fps.
Here's another, 22 grains of Relaoders 7 & a 40 grain bullet at around
3,450 fps. Have you guessed that I like 40 grain bullets in all my small
rifles ? The good 40 grain bullets are the best thing that has happened
to all the small case rounds like the .221 Fireball, .223, 222 Mags, etc.
Walt Berger used H335 in his 222 to set many world records with his 52g Bullets...may be worth a shot.
I would think that you would have great luck with faster powders like R#7, 4198, N-130, with the 40's.
When you try a couple of loads with the 748 and 40's, pull the bolt and see how dirty it is burning. Most ball powders like a hot load with max pressures to burn clean. I doubt if the 40's will develop much pressure at all with the 748, but you check it out and let us know.
I have never had good luck with relatively slow powders in the 222. My best loads involve 4198, Rl 7, and the now discontinued AA2200. H322 made small groups, but not at max velocity. H335 didn't work well in my rifle, but it makes for tiny groups in my 223. If I had to choose one powder it would be 4198 (either). If I had to load lots of rounds, I would choose RE 7, as it meters well. My rifle doesn't like the pointy 40 grainers, but shoots 42 grain Calhoon bullets extremely well. If I had to choose one load, it would be 20 grains of IMR 4198 and the 50 grain Sierra Blitzking. Whatever you gain in speed with the 40 grainers over the 50s you lose after about 100 yards. This load gives about 3,250 fps in my rifle with 23" barrel. That's about all there is in the 222.
I've had good luck with 25 to 26 grns with most any quality 50-55 grn bullet. This is beyond max in some manuals but shows no undue pressure signs in either of my Sakos. 26.0 grns with the Speer 52 HP, WW brass, and CCI 400s was my standard load for years. Presently I'm using H322 for full power loads. I like the hot weather characteristics of the Hodgdon "Extreme" powders. I wouldn't rank 748 in the top five powders for 222 among current choices. I would however rank it among the very best for 223 Rem full power loads.
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