358 Winchester 1-14 twist and 300 grain subsonic doable ?

[Smoke4320]

Before I go and invest in a $130.00 mold want to ask the wise ones here
I have a Older Remington 700 that was rebored to a 358 Winchester 3 groove 1-14 twist.. Shoots lights out with a NOE 360-200
was wondering if it would stabilize a NOE 360-300 at subsonic speeds. I have looked at a couple twist rate charts and its bordorline
so anyone here have hands on experience they can share, hints, tips ?

[BK7saum]

Smoke, I haven't worked up the 295 HP 310 Thumper bullet yet in my 14 twist 358. I dont know when I'll have time. You want me to cast up some bullets and send your way. I PC'd some in black and they are way too thick- wont chamber. They were shaken and bumped like all the other pc bullets, but definitely coated thicker.

[Smoke4320]

BK7saum PM sent your way

[Meatpuppet]

I have been shooting a 300gr Powdercoated "Smokes Clear" (go figure) in an MGM .357 Maximum (.358dia) 16" 1-14 twist barrel at 1000fps with a suppressor without issue. No yawing or keyholing at the target out to 75 yds.

My projectiles are cast from and undersized Accurate Mold 35-300P, powdercoated and then swaged up into a custom BT Sniper point form die. I dont see why a cast and powdercoated bullet would not work just as well.

My dies are back at BTSniper getting Nitrided, but I would be glad to swage some up for you if you are interested. I also have some 275gr I can send you right now.

I have just started experementing with a 10" pistol barrel, but I went with a 1-10 twist because I can only get 900 FPS out of it with the muzzle pressure I am looking for.