Lead head questions?

[Breakdown]

I have been looking at lead cast bullets to load up in the .300 blackout.... Some have FPS ratings that the manufacturer say not to exceed..I was looking at some 115gr heads but the company said that they have a 1250 FPS limit. So the question is...what happens when you exceed the FPS.

Thanks
Guys

[thenodnarb]

you get leading in your barrel. The lube can only handle so much velocity before it fails.

[sargenv]

300 blackout is meant for long heavy slow bullets in the first place.. sort of the whole point of them actually..

On another note, with the proper hardness of lead and the right lubricants, I know some lead bullets are able to withstand up to about 1800-2000 fps.. without gas checks.. but at that point, you are getting into the custom cast/heat treated realm..

[stilly]

I heard the 150gr or whatever size that Xtreme sells in .308 is GREAT for .300 whisper/30-30 and prolly 300 AAC as well.

Give them a shot (pun intended).

[Breakdown]

Thanks guys..I have been looking at the extreme heads ..most likely that's what I'll do..I just came across some lead..just wanted to use

[CGT80]

The diameter of lead bullets is critical. Bigger is better, as long as it will still work with the other dimensions of your brass and chamber/barrel. Hardness is important, but harder is not always better. Lube is an easy choice for me as I have found one that fits all of my needs.

Push a lead bullet to fast and you will get leading and accuracy will fall off. They don't need to go as fast a jacketed to be accurate. I shoot a plain base, no gas check, 30 cal rifle boolit at 1300 fps and do just fine for steel targets and plinking. I cast them myself and use white label Cred lube. I size them to 0.311".

[tiller]

I heard the 150gr or whatever size that Xtreme sells in .308 is GREAT for .300 whisper/30-30 and prolly 300 AAC as well.

Give them a shot (pun intended).

They take a lot of work to get them to feed correctly

[meaty-btz]

Rules of Lead:
-Go Big or Go home.. lead must be OVERSIZED to prevent leading
-Softer is usually better than harder.. best way to think of it is a lead bullet "fire forms" to your barrel. Too hard an alloy for your charge will result in leading and poor accuracy even more than an undersized bullet.
-Lead is an artform.. each barrel and gun will like a different combo of lube, alloy, charge, and velocity for best results. What works for others really might not work for YOU.
-Mass Produced Lead Sucks.. Mass Produced Lead bullets are almost always UNDERSIZED and WAY TOO HARD. This is because it is mass produced, they simply go by a default standard.. which is a bad idea in lead. Also they go for hard Linotype alloys because people get butthurt when they buy a box of lead bullets and they have dents in them. So the solution for pretty looking bounced, shaken, and abused shipped bullets was to make them as hard as possible.

If you are not going to cast your own, I don't recommend shooting lead. If you have a REALLY tight barrel and chamber then the mass produced ones might work GREAT for you.. most folks don't have tight barrels and chambers as manufacturers tend to err on the larger size for safety reasons.

[3006mv]

heavier cast is better than lighter in 7.62x35
plan on gas checks or powder coating the lighter boolits.