Using IMR-4895 and Mule Deers' advice I formulated some reduced loads for my .280 Rem. An old Sierra manual showed a load of 46.9 of I-4895 with a 140gr at 2800fps. Using the Hodgon formula I multiplied 46.9 by .60 (60%) to arrive at my reduced load of roughly 28grs. This load is easy to shoot, and didn't require a ton of holdover at 200 yards. I havn't clocked it yet, but I wouldn't be surprised if it would work on deer out to the 200 yard mark. This will be just a practice load for me, but would be a great starting point for a new shooter. Good luck with your loads!
Welcome to the club....
too bad not many guys discovered that they don't need a 500 yd load to take a deer at 100 to 200 yds...
I'd clock that load before I launched it at a game animal.
I just ran a linear regression through a bunch of IMR4895 data for a 140 in the 280. Extrapolating down to 28 grains shows a predicted speed of approximately 1870 fps. So you're starting the bullets out near a typical minimum recommended impact speed.
I'd clock that load before I launched it at a game animal.
I just ran a linear regression through a bunch of IMR4895 data for a 140 in the 280. Extrapolating down to 28 grains shows a predicted speed of approximately 1870 fps. So you're starting the bullets out near a typical minimum recommended impact speed.
So an Interlock is sometimes known as a "poor man's Partition" at normal velocity; why not allow a reduced velocity Sierra to be called the "poor man's TSX" ?
I'd clock that load before I launched it at a game animal.
I just ran a linear regression through a bunch of IMR4895 data for a 140 in the 280. Extrapolating down to 28 grains shows a predicted speed of approximately 1870 fps. So you're starting the bullets out near a typical minimum recommended impact speed.
Well then, put out some media to test it in, and see how it does...a ballistic tip will open up reliably down to 1300 fps or less...
Thanks to all. Mathman-linear regression, geeze! I will clock this load and post it out of curiosity. I don't plan to hunt with it, but it makes for a great practice load. Now if I can figure out a reduced load for my .338 Win.
Big bear, Look in a Speer manual it has them for 200, 250 and 275's w/ 4759
Thanks to all. Mathman-linear regression, geeze! I will clock this load and post it out of curiosity. I don't plan to hunt with it, but it makes for a great practice load. Now if I can figure out a reduced load for my .338 Win.
Open a new thread, and tell us what you are looking for.
I have several that work well in a variety of rifles.
I've used H4895, IMR 3031, Varget and even TAC for reduced recoil and velocity loads. They all work if one finds the sweet spot for accuracy.
But, if you really want reduced recoil, try the faster rifle powders like 4227 or 4198. My old Dupont Guide says I can get 2100 fps. with 27.5 grs. of IMR 4227 or 2375 fps. with 34.5 grs. of IMR 4198 with a 150 gr. bullet in the .280. Or 2375 fps. (4227, 28.5 grs.) or 2680 fps. (36 grs. 4198) with a 125 gr. bullet. E