Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
You are using the old High Contrast theme. We have installed a new dark theme for you, called UI.X. This will work better with the new upgrade of our software. You can select it at the bottom of any page.
What's about the heaviest cast lead bullet that can be safely used in a .30-30 (Marlin 336)? Think a 250-260gr might work - that is, feed and chamber - reliably?
what about the rifling twist? I don't know what it would be for a 30-30 but those bullets might be getting a little long for the velocity you might get.
WHY BOTHER ?? A decent 30-30 with 170 to 200GR LFN bullets will hit 1000 yard targets incessently. Your idea will NOT improve on that one whit for all the known reasons of the 30-30 cartridge. READ it's history.
I think that Jim missed the previous posters point.....
FWIW; I just checked the twist on my Marlin/Glenfield .30/30 and it's a 1/12" twist M/G barrel.
The problem with the .30/30 from a l/a will be more action length and case capacity. Most cast bullets suitable for the .30/30 are 200gr or lighter. The longer cast bullets will contact the lead in the barrel (rifling/throat), limiting how far out they can be seated and with the depth of seating, will limit powder capacity.
Additionally, I've found that with the cast bullets, having the base and lower driving bands exposed to the powder combustion seriously deteriorates the accuracy, hence the wonderful long neck of the .30/30 making it highly suited to cast bullets.
I've found that for best velocities/accuracy, that the .30/30 just about peaks out with a 170-180gr bullet. My personal favorite for over 3 decades is the Lee 150gr FNGC which casts to 158-162gr depending on alloy and mould..... A second favorite is the 170gr Lee FNGC which casts to 180gr and with bullet crimped to the crimp-grooove puts the gascheck right at the base of the neck preserving the integrity of the groove and lube and driving band just above it.....
And yes, the 180gr FN does about anything you'd want from a .30/30.... From low velocity "QUIET" plinking to heavy deep penetrator.... A heavier bullet than 200gr will likely "key-hole" drammatically reducing penetration....
Jacketed bullets of up to 240gr "CAN" be shot, but won't likely be offering any benifit....
I fiddled around with this, but 190 is about the max you can squeeze in there unless you use a single shot with a generous throat. There's some data for that load around. B Bore loads some in this range.
If you're looking for heavy bullets out of a similar round, go with the .30-40 Krag. It's designed for bullets up to 220 grains.
I'll be honest - I saw Missouri Bullet is coming out with a .309" cast lead 265gr bullet for the .300 Whisper/Blackout and I wondered if that would work in the .30-30.
Sounds like "probably not." I'll save those bullets for others to enjoy.
Yeah, but then again, early in the Civil War, some thought it might be "good idea" to "kick a bouncing cannon ball" and go home with your foot in a cast.....
But,...... what foot?, and where did my knee go???
Your biggest problem is going to be velocity, and accuracy.
I found the more weight I put in my .30-30 bullets, the worse it got. This summer, I'm actually gonna try some 30 carbine 110's, and see how that works.
My guess it ( your 220 grain) will look something like this :
I used to have a Marlin/Glenfield 30-30 with the micro-groove rifling, and I could not get that rifle to shoot lead cast rounds worth a darn. I got a Marlin Cowboy 30-30 with the Ballard rifling and it shot both the jacketed as well as the lead cast very accurately. I had an old timer tell me that the micro-groove rifling is not aggressive enough to grasp the lead projectile, such as the older Ballard Rifling, however the jacketed rounds shoot well in the micro-groove. Go figure!? Also I wouldn't go over a 190 grain in a lead cast bullet, due to the length as previously noted, especially in a 1/12 twist.
I tried the RCBS 311-180, Lubed and checked, they dropped at 197g. The nose on them would work it's way into the rifling a bit, and would sometimes pull the bullet when unloading a live round. I can't imaging you'd even be able to get one of the 250'ish ones to load and chamber fully. I've settled on a 180'ish cast bullet from Lyman (311041), thats about as heavy as i care to shoot from the 30-30 levers.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.