280 rem

[yellow dog]

How fast can one hope to push a 160 AccuBond with one of these? How fast with the A I version and what benefits does it have over the 7 MM REM.

saw where someone had said 3000 fps with a stock 280 rem, but not sure about that one? would you be way over pressure?

 

[JD338]

I can get over 3000 fps with the 160 gr AB from my 280 AI with a 24" barrel.

JD338

 

[Horsethief]

A new 24" barrel for a 280 Rem using 160gn Partitions got the average velocities below.

Powder Gn Ft/sec
Supreme 780 58 2824, 2888 (two runs)
Supreme 780 59.5 2968
Varget 47 2750

The first 58gn load was a better group and had a lower average velocity. The load with Varget was very good.

 

[FOTIS]

160 GR. SFT SP 	Hodgdon 	H1000 	.284" 	3.240" 	57.0 	2517 	40,700 CUP 	61.0C 	2714 	47,500 CUP 	  	  
160 GR. SFT SP 	Winchester 	Supreme 780 	.284" 	3.240" 	53.3 	2546 	44,800 CUP 	56.7 	2718 	49,500 CUP 	  	  
160 GR. SFT SP 	Hodgdon 	H4831 	.284" 	3.240" 	51.0 	2464 	40,600 CUP 	55.0 	2660 	49,500 CUP 	  	  
160 GR. SFT SP 	Hodgdon 	Hybrid 100V 	.284" 	3.240" 	47.0 	2451 	38,900 CUP 	52.0C 	2712 	48,600 CUP 	  	  
160 GR. SFT SP 	Hodgdon 	H4350 	.284" 	3.240" 	46.0 	2441 	40,900 CUP 	49.5 	2610 	48,900 CUP 	  	  
160 GR. SFT SP 	Hodgdon 	H414 	.284" 	3.240" 	43.0 	2348 	40,300 CUP 	47.5 	2558 	49,700 CUP 	  	  
160 GR. SFT SP 	Winchester 	760 	.284" 	3.240" 	43.0 	2348 	40,300 CUP 	47.5 	2558 	49,700 CUP 	  	  
160 GR. SFT SP 	Hodgdon 	Varget 	.284" 	3.240" 	39.0 	2384 	43,000 CUP 	42.5 	2555 	49,300 CUP 	  	  
160 GR. SFT SP 	Hodgdon 	H4895 	.284" 	3.240" 	38.0 	2341 	40,300 CUP 	41.5 	2535 	49,500 CUP 	  	  
162 GR. HDY A-MAX 	Hodgdon 	H1000 	.284" 	3.330" 	56.0 	2526 	40,300 CUP 	60.0C 	2711 	47,200 CUP 	  	  
162 GR. HDY A-MAX 	Winchester 	Supreme 780 	.284" 	3.330" 	52.2 	2548 	42,700 CUP 	55.5 	2735 	49,400 CUP 	  	  
162 GR. HDY A-MAX 	Hodgdon 	H4831 	.284" 	3.330" 	51.0 	2517 	44,100 CUP 	54.5 	2644 	49,300 CUP 	  	  
162 GR. HDY A-MAX 	Hodgdon 	Hybrid 100V 	.284" 	3.330" 	47.5 	2528 	39,800 CUP 	51.5C 	2746 	47,500 CUP 	  	  
162 GR. HDY A-MAX 	Hodgdon 	H4350 	.284" 	3.330" 	46.0 	2468 	42,300 CUP 	49.5 	2614 	49,900 CUP 	  	  
162 GR. HDY A-MAX 	Hodgdon 	H414 	.284" 	3.330" 	43.0 	2400 	41,400 CUP 	47.5 	2669 	49,900 CUP 	  	  
162 GR. HDY A-MAX 	Winchester 	760 	.284" 	3.330" 	43.0 	2400 	41,400 CUP 	47.5 	2669 	49,900 CUP 	  	  
162 GR. HDY A-MAX 	Hodgdon 	Varget 	.284" 	3.330" 	39.0 	2443 	44,100 CUP 	42.0 	2573 	49,500 CUP 	  	  
162 GR. HDY A-MAX 	Hodgdon 	H4895 	.284" 	3.330" 	38.0 	2396 	42,800 CUP 	41.5 	2567 	50,000 CUP

 

[FOTIS]

Again the top are conservative loads that have plague the 280 since inception!

 

[Wincheringen]

My 22" barreled 280 does 2950 FPS with the 150 ETip. I loaded some of the 160 ABs with 7828SSC but accuracy wasn't as good so I didn't run them over the chrony.

 

[Oldtrader3]

Those loads were only 40K CUP. With IMR 7828 SSC, a shooter can get 3000 fps at about 60K CUP or less with Partition 160 grain bullets. Try 58.0 grains which is a book load in some books for the .280 Rem (not AI). My .280 belongs to our grandson now, but he uses 160 Partition hand loads that I made which chronograph at 3010 fps with that load of IMR 7828 and a Federal 215 Mag Match primer in W-W plated cases. BTW, that load has no pressure signs in my (ex) Browning A-Bolt.

 

[Horsethief]

I found the book loads by Hornady, Hodgdon, and Lyman to be way lower than what a 280 Rem can take without problems. I found a few loads that were too much and caused the primer cavity to expand. Only one hot load had a ring of residue around the primer.

The Nosler #7 reloading manual is the only one I know of that recognize the bolt action 280s will take heavier loads. I wouldn't be surprised if the newest Barnes manual has loads nearly equal to the Nolser 7.