Anyone try this in a 450BM?

[mattri]

Looking to use this boolit in an AR platform, figure PC'd and run at a reasonable velocity it may work well.

Thoughts?

https://www.midwayusa.com/product/10...149918#reviews

[Gtek]

Wonder about possible feed ramp damage issue in an MSR, but stood on their noses and there behinds PC'd might be a winner in a bolt platform.

[Finster101]

If I was feeding an AR with it, I would want a four or six cavity if available.

[Castaway]

Gtek, can you rephrase what you said?

[mattri]

Thanks I prefer 2 cavity molds, better for qc and I don't rapid fire so more than enough volume.

[reddog81]

I prefer heavier bullets for 450 BM. Starting load data for 230 grain bullets is pushing 2,000+ FPS. Certainly doable but you’ll have to make sure your alloy is up to the task. I have an NOE mold that looks similar but 304 grains and it feeds without issue.

[mattri]

Good to know thanks- what twist barrel are you running?

[reddog81]

I have a Ruger American ranch with 1:16 twist and Bear Creek upper with 1:24.

[Gtek]

Rephrase in regards to?

[Castaway]

I’m not sure what MSR means, what you’re standing on their noses and don’t have any idea what is meant by there behinds. I don’t have any experience with powder coated bullets but they’re essentially a lead bullet. A lead bullet would not cause feed ramp damage. Does PC’ing bring something else into play?

[Gtek]

#1- MSR= Modern Sporting Rifle, words seem to have the power of killing people today so the term is kinder, more gentler and I think really a little more correct than AR-. #2- Behinds- rear portion of projectile (bearing surface aft). I have plates milled that the projectiles are stood vertical on there noses, behinds in the air and sprayed and then to oven sealing sides and bases. #3- Ramming a .452 diameter bullet into the M4 upper ramp and face of extension that has not been slicked or altered from the .223" can damage nose of said projectiles. Assemble a 450M or Socom on a MSR and try some Alloy bullets. No damage to ramp, damage to the things you really don't want damaged, their behinds are protected but can damage tip and ogive area of projectile.

[Castaway]

Ah, makes sense now. Thanks

[mattri]

That BCA upper does ok with the 300s, no feeding issues etc?

[reddog81]

That BCA upper does ok with the 300s, no feeding issues etc?

Here are links to the bullets I have used. All work well. The 304 has the closest nose profile to the Lee bullet you mentioned. It feeds smooth as butter. Even the 285 Semi-Wadcutter feeds without issue. the 350 grain bullet has more of a wide-flat nose profile. It feeds fine but needs to be seated kind of deep.

https://noebulletmolds.com/site/prod...4-285-swc-ad2/
https://noebulletmolds.com/site/prod...452-304-rf-k6/
https://noebulletmolds.com/site/prod...54-350-rf-ad3/

[Mal Paso]

Looking to use this boolit in an AR platform, figure PC'd and run at a reasonable velocity it may work well.

Thoughts?

https://www.midwayusa.com/product/10...149918#reviews

That's a Tumble Lube design for light pistol shooting. A conventional bullet or Gas Check design might be a better choice depending on the speed you are shooting them. 450BM is a 40K PSI Round.

[mattri]

Awesome thanks!

[dogmower]

I've had very good results with the Arsenal molds 260 grain RF mold over 33 grains of IMR 4227. This boolit also shoots very well in the 45 Colt. Really like Arsenal molds and have had very good luck with their products. Have also shot the Lee 255 grain (452-255-RF) mold with the same powder charge. At 200 meters both loads hit pretty much in the same place.