I'm working on getting some RL17, and a couple more appropriate powders. We have had some crazy winds and freezing rain, so the factory ammo test will have to wait a few days.In order to meet your goal of 2550 you would have needed to realize a gain of 58.7 FPS @ inch. That was a pretty optimistic expectation if the only change was adding barrel length. The Barnes manual suggests if you step up to 70.0 gr of RL-15 you should get 2580 out of a 24" barrel. Even allowing for a 1" shorter barrel you should still be close to 2550. Every other powder listed in the Barnes manual has max loads +2600 FPS so you can get there if you use the right powder. Personally, I doubt the difference between 2442 and 2550 makes any real world difference to the critter getting shot. YMMV
@deepwaterI wouldn't want to spend 7-10 days in brush with a 26" bolt action. Might as well put a can on it. (Lol)
My friend, the PH, says thats the difference in cultures. Everything in America is short barrels and tactical. He said you will never see a PH or a Ranger (in Africa) with a short barreled rifle.I wouldn't want to spend 7-10 days in brush with a 26" bolt action. Might as well put a can on it. (Lol)
The reason for me wanting a 26" .416 Ruger, is to match the Rigby without going above 59k psi.@deepwater
Why not? I spend a lot of time in the bush with 25 inch barrels. My Whelen has a 25inch barrel plus 1 and a half inches of muzzle brake and have no problems with it.
I load for velocity and accuracy so I'm happy to have a longer barrel but that's just me. The extra length only adds a few ounces.
Very similar to my own results. Thank you.I was able to get to the range and test a load for 260Gr accubond in the Savage Brush hunter with 20 in barrel and my Ruger African 23in barrel. Using a mid range load of Ramshot Big Game 80.5 gr. (the normal- this is safe in my rifles and your should start 5% below this level warning and are responsible for your own saftey. and If unsure shoot only factory ammo)
Difference 63 fps
Loss per inch of barrel 21fps
Powder speed and bullets weights have shown to have NO effect on fps/inch.the velocities in the test were low for the case potential, and the powder was faster than optimum.
once you get up to 2550 to 2600, things might look different, and up there that velocity difference would mean lower pressure with the longer barrel for the same velocity.