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I suppose there are reasons it wouldn't work, but with all the postings about 'overbore' .44 Mag and .45 Colt guns out there (I need to slug mine, but the one that shoots good I won't slug because I don't want to know! ) I got to thinking, wouldn't it be nice if there was an accurate way to 'bump up' factory lead bullets and cast ones from 'standard' molds so that they fit our overbored guns? Paco's tool of course came to mind!
Sort of a 'reverse swaging' process...
Might be a tool you'd use on bullets alone vs. loaded rounds, but still could be useful; I don't know how a punch-and-die process like that would affect hardness for those who use specially-quenched bullets, but for 'regular' loads it might really help us get more accuracy out of our overbore guns without having to special-order an oversize mold, and cast bullets ourselves, or buy the more expensive oversize custom bullets. Just put that .430 bullet in the little die thing, and smack it up to .434 or whatever...
Any thoughts, Paco?
It's 2025 - "Cutesy Time is OVER....!" [Dan Bongino]
Paco's Acc'rizer works because .22s are Heeled bullets. Try it with a regular seated cartridge and you are asking for bullet setback/pressure issues - even if crimped in a good crimp groove/cannelure.
Now, I suppose on one of the old heeled .44s it would work OK...
C2N14... because life is not energetic enough. מנא, מנא, תקל, ופרסין Daniel 5:25-28... Got 7.62?
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Some folks use heavy pressure on the handle of their lube-sizer to 'bump up' bullets.
With alloy that isn't too hard, and a well built lube-sizer, it can work.
I would guess that it takes a while to develope the feel to do this consistently.
Some of us don't cast our own, and if we have several diameter guns to deal with, we'd have the expense of several sets of molds. We could cast them ALL 'oversize' and swage them down to the various sizes, as needed, with minimal expense, but my question is what about swaging them 'up' from a minimal diameter. The added advantage being that the minimal diameter ones are what always seems to be commonly stocked, and/or affordable.
Of course if the manufacturers would just make guns the right size, that would help!
It's 2025 - "Cutesy Time is OVER....!" [Dan Bongino]
I'd love to be able to do that with the RNL ammo we have available down here. But we're not allowed to "increase the lethality" of our ammo. I like the idea, but the explanation above of "why it won't work" explains the situation. There's not much holding the bullet in place and if you whack it with a hammer it'll just slide down in the case - not a good idea at all. You could pull bullets from loaded rounds and "bump them up" in a swage press/die combo - and you could form your own bullets that way too. But I doubt there's a way you can reliably bump up loaded rounds to where the bullets are going to provide greater accuracy. The closest you can come is to use fast powders to "smack" the bullet with a bunch of pressure as it moves into the throat and "bump it up" that way. Results can be iffy and it takes patience to find a good load that's not going to lead your bore and gives better accuracy. Plus it helps to play with different alloys. About the only other option (if you load your own and don't cast) is to find someone who has a mould that throws over sized bullets. You can also load "as cast" instead of sizing them. If you don't reload nor cast then you're pretty limited - to say the least.
Paul - in Pereira
"He is the best friend of American liberty who is most sincere and active in promoting true and undefiled religion." -- John Witherspoon
I'm thinking mostly of something you could use on bulk-purchased (i.e. affordable) lead cast bullets of say .430" that you'd RATHER were .434" to fit your particular gun. You could do that pretty fast, avoid the cost of custom diameter bullets, and the time and equipment needed to cast your own (and still have to buy custom molds).
The resulting bullets might not be 'perfect' but accuracy isn't exactly good when the bullet doesn't even engage the rifling because it is so undersized!
It's 2025 - "Cutesy Time is OVER....!" [Dan Bongino]
AJMD429 wrote:I'm thinking mostly of something you could use on bulk-purchased (i.e. affordable) lead cast bullets of say .430" that you'd RATHER were .434" to fit your particular gun. You could do that pretty fast, avoid the cost of custom diameter bullets, and the time and equipment needed to cast your own (and still have to buy custom molds).
The resulting bullets might not be 'perfect' but accuracy isn't exactly good when the bullet doesn't even engage the rifling because it is so undersized!
I'v read of bullet "bumpers" to bump up the dia. I envision a die that the bullet gets driven into. Dont know how well hard cast would work.
) I got to thinking, wouldn't it be nice if there was an accurate way to 'bump up' factory lead bullets and cast ones from 'standard' molds so that they fit our overbored guns? Paco's tool of course came to mind! 
