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Over the past few months I've been corresponding with a guy who works in the lab at Leupold Scopes, and he, as well as 3 of his co-workers who shoot the 375 Ackley have settled on the following load: 90 grains of H4350 pushing the 270 grain Barnes XLC at an average speed of 2914 fps. NOTE- this is with the XLC (COATED BULLET) ONLY! . Any other bullet will drive the pressures sky high. It averages 3 shot groups under 3/4 inch. This obviously is a compressed load, and needs a 6 inch drop tube, and a vibrating jewelry cleaner to make this happen. Bullets are set .010" off the lands. He sent me some pictures of bullets recovered from American Bison, and also Cape Buffalo. The photos looked just like the advertisements. On the one recovered from the Bison, he said the shot was taken from a quartering away angle, and the bullet smashed the shoulder socket on the far side. The retained weight was 260 grains, and the expansion was just perfect, as were the bullets recovered from the Buffalo. He goes on to say that with the XLC BULLET in this caliber, you can't get enough H4350 powder in the case to drive up pressures to a dangerous level. I've tried this load in my 375 Ackley Improved, and I'm finding the same thing. In my Winchester Model 70 with a 24" barrel, I'm averaging 2897 fps 10' from the muzzle. Can't wait to give this a try on Buffalo, and plains game as well. I mean, think about it-a 270 bullet that shoots about as flat as a 7mm magnum . Who could ask for more?

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Mike,
I've had good performance from Barnes X bullets over many years.
I will be keen to hear how those 270 grainers perform on buffalo!

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