Interested to know the purpose of your build.Building a 30 Nosler and plan to shoot 215s or 205s Bergers. Barrel will be 22” and will also have 9” suppressor. Will Retumbo or N570 be too slow of a powder with only 22”
This^^^N570 is a very slow powder. In general, slow burning powders need sufficient barrel length 24 to 26" to achieve the full capability of the high powder volume cartridge selected.
I never understood why anyone would select a magnum cartridge in a rifle with a short barrel. In general, one ends up burning a lot of powder without meaningful results, e.g., getting 308 to 30 06 performance from a 30-caliber magnum with a short barrel.
But then again, I am not expert on magnums, I never owned one, nor will I ever.
I am hard pressed to figure what a good old 30 06 with the proper bullet and skilled rifleman won't do in North America except for the game that can eat you, i.e., grizz.Costs to feed them these days. 8# getting close to $500
It will be a rifle my hunting clients can use/rentInterested to know the purpose of your build.
@FeManI have a 30-28 and shoot H1000 suppressed from a 26-inch. I am playing with the idea of a 22-inch. In looking at Quickload and muzzle pressures from a 22-inch, I decided I would stick with H1000 if I do this. The muzzle pressure from N570 in a 22-inch is close to 20 ksi. H1000 is around 15 ksi and Retumbo a little above the H1000. N570 might work well and will certainly give you better speeds, but be a sure and check with your suppressor manufacturer to make sure your device is rated for 20 ksi if you plan to try it. That is HIGH.
Sounds like we’re after the same goal. I have a Magnus K-RR on order. Hoping to be as effective as brake without the percussion. I’ve steered away from suppressors due long recoil impulse, hearing the K-RR feels more like a brake.I have not chambered a shorter barrel and probably wont. My motivation was to get the length down, but the rifle is almost impossible for me to spot my shots in this lighter weight hunting rifle suppressed at 26 inches and the 22 would be worse. I ordered a TB Magnus SR, which I hope tames the recoil much netter. It should be here any day now. If it does tame things down to the point where I can spot my shots, then I might stay suppressed for hunting and look into a shorter barrel. If not, I'll go with my MBM brake.
I have loads for both 215 and 205 hybrids. Both shoot under 0.2 moa both have tuned at just under 3,000 fps using H1000. Hope that helps.