I like to send those skinny barrels off to "300 Below" for cryo treatment. Stops them from walking off, ha. $100 stops alot of hair pulling! I used R22/150 NBT in a 280 MR I had reamed to the Ackley Imp (only gained 50fps, but it was fun playing with it!) I also had good results with IMR 7828/160 Hot Cor. But really....as far as I am concerned, my experience with ANY skinny barrel is "you just have to find what it likes", ha. Good luck to you Pard!
Frustrating is right! I’ve been turning the AC on high in my car and storing it in there after each 3 round group while I shoot another gun waiting for it to cool! I’m really glad you mentioned the twist rate, I had been wondering that as well. It is a 1977 if I dated the barrel correctly. Just went out today with another load ladder with 160gr Sierra 1920 and worked from 52gr-54gr of RL 19. Results were the same as every other powder I tried with any 160gr bullet. So far I’ve had the best groups with 140’s. Only have used IMR 4831 with them and the results were much better. Wondering if I should go lighter?
Frustrating is right! I’ve been turning the AC on high in my car and storing it in there after each 3 round group while I shoot another gun waiting for it to cool! I’m really glad you mentioned the twist rate, I had been wondering that as well. It is a 1977 if I dated the barrel correctly. Just went out today with another load ladder with 160gr Sierra 1920 and worked from 52gr-54gr of RL 19. Results were the same as every other powder I tried with any 160gr bullet. So far I’ve had the best groups with 140’s. Only have used IMR 4831 with them and the results were much better. Wondering if I should go lighter?
I use a product called "barrel cool" and a thin damp terry cloth towel over the barrel to help cool it down quicker. There is another product by Magneto Speed that is used to help cool the barrel down on rifles also.
~Molɔ̀ːn Labé Skýla~
“Fear thou not; for I am with thee: be not dismayed; for I am thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.” ISAIAH 41:10
I recently bought a Remington 700 Moutain rifle in .280 Rem. I Am struggling to get a good load dialed in for it. I would ideally like to figure out a 160 grain load for all around use. Anybody out there have any insight on what they’ve had luck with?
My M70 fwt in .280 will shoot bug holes at 200 with Federal blue box 150gr. Try that. I can't duplicate the accuracy of the load so I'm not even going to try.
I have a load I worked up with the Hornady ELD-X 150 gr. .284 bullet, which has a high BC for a hunting projectile. With Hornady brass, 60.1 gr. of RL26, CCI 200 primers, MV is a chrono'ed 3050 fps, and sub-MOA accuracy. Attached is a ballistics chart for this load, along with a side by side comparison with the much-vaunted 6.5 CM and a Hornady 143 gr. ELD-X bullet. As you can see, the 150 gr. ELD-X out of the .280 Rem. is superior to the CM in drop, wind drift, energy, and velocity, out to 600 yards, which is why I chose to work up this load. It is a superb long-range choice for game up to and including elk.
Plus one on the 150 eldx. I use this bullet in all our 7mm-08s, at 2790 fps. My nephew used this load to kill a 5x6 bull a couple of years ago, 409 yards.
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My M70 fwt in .280 will shoot bug holes at 200 with Federal blue box 150gr. Try that. I can't duplicate the accuracy of the load so I'm not even going to try.
Great shooting tz! Keep me in mind when you sell that one
I measured the twist, and it is a 1/10. Lightened up the bullets to 140 grains. Tried one ladder with IMR4350 and 140 grain Nosler Accubonds, had two loads on the ladder that had 2 touching but one the 2nd round was 1.5 MOA off and the other the first two touched and the third was 1.5 MOA off again even after letting the barrel cool completely between the first two rounds and the third. Going to try out some 140 TTSX and 150 NBST loads and see what she does. Just wondering to myself if it is the powders now or the bullets. On the plus side, I got one hell of a node out of my 7mm Rem Mag today!