12/15/2023 0 Comments 458 subsonic bulletI mention non-expanding subs because those have been discussed a lot, in this thread and many others. I think if more people understood this, the popular choices would be different. calibers to be used more for subs lately. (A lot of ballistic calculators don't handle subsonic speeds accurately though, so beware of that, you're better off comparing actual shooting results, as I've been doing for years.)īut false assumptions and lack of knowledge about it, as you've shown, are driving the popularity for high b.c. 30 cal at 1,000 fps even at 200 yards the actual difference in drops isn't much. If you want to get extreme, compare a 200gr 45 ACP at 1,000 fps to a 200gr. can be a big deal it's nearly irrelevant for subs. As I said, it is NOT like for supersonics, where b.c. The effect is minimal even just 50 fps muzzle velocity has more effect at 200 yards than a big change in b.c. No, you should do some comparison of high vs low b.c. An obvious exception (now) is the 30 cal just because we've been doing subs from that one for long enough to have more options.įair enough, and possibly true with the expanding bullets, if the cartridge gains a LOT more popularity, and if you don't mind paying $2/bullet. If you stick to calibers that have bullets for a pistol cartridge or slow rifle cartridge, you'll have much better success with subsonic wildcats. It's funny, because everyone skips right over the 35 calibers, which actually have a bunch of decent subsonic bullet choices. Truth is, the 338 and 375 are both relatively poor choices for subsonic rounds at this time. Bullet profile and other details are much more significant for effect on target, but people get caught up in the easy numbers like bullet weight and don't consider the things that actually matter. Banging steel louder is about the only exception. It looks like bigger numbers on paper, but doesn't make much difference, if any at all, on an animal or most other targets. My point on the non-expanding subs is that, in something like this 375, it doesn't much matter if you've got a 270gr, or 300gr, or 350 or whatever. What are your numbers.barrel length, bullet weight you are looking at?Ĭlick to expand.Fair enough, and possibly true with the expanding bullets, if the cartridge gains a LOT more popularity, and if you don't mind paying $2/bullet. You know the deal.adjustable gas blocks, changing springs/buffers. 375 Raptor, the shorter gas systems are going be a pain in the butt. So If you you guys are looking for 12-16" barrels, on a. The shorter the gas system with the big boomers, the more head aches you'll have. I've built (2) 45 Raptors, and now a WSM on the LR308. 375 350 grain bullet, or SMK is probably out the question, with the long sloping ogive With the heavier, longer bullets, freebore will definately be factor with a sub-sonic 375 Raptor. 375 bullets, would be the dangersous game style bullets at 350 grains. The problem that I'm seeing so far is a bullet that is, heavy enough, and commercially available. (Barrel length makes a difference I found another reference where a guy with an 8 in barrel was loading 15 grains Trail Boss getting 1087 fps.What bullet weight would you want to use? 458 bullets from essentially straight wall cases. Based on published Hogdon sub sonic loads for 45-70 I think you should look into what other info you can find regarding using Trail Boss for a subsonic load since both cartridges are pushing. NOTE: I cannot recommend you load anything unless you find the info from a reloading manual, but this may give you a place to start your information search. I do not have a 458 SOCOM so Call HOGDON at (913) 362-9455 (Barrel length makes a difference I found another reference where a guy with an 8 in barrel was loading 15 grains Trail Boss getting 1087 fps.) "Rem 700, 16” barrel, new StarLine brass, 325ftx, trail boss, cci mag pistol primer. I know this doesnt show 458 SOCOM but it shows 45-70 loads running Trail Boss
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