Ugly Sauce
Member
- Joined
- Oct 26, 2020
- Messages
- 6,201
Okay scratch that, I have some 3" shells. They measure .472". Wonder why the SAAMI spec has a larger diameter for the 3". ???
I kind of passed over this, but the more I think about it, it's making more and more sense. There's the safety issue of someone putting a .45-70 cartridge in it, but most any 410 chamber will take a .444 Marlin, .44 Magnum, .45 Colt, .44WCF, etc. case and fire it.Odd idea. Take a 45-70 reamer to it, or have it chucked in a lathe and opened to take a straight wall .45 basic case. (unformed .45-70, 90, 120 case)
Sounds like a dumb question perhaps but how have you been polishing the chamber? I like to chuck a brass gun cleaning rod in a drill then screw a brush into that. I figured you may have probably done did something like that but I just figured it wouldn't hurt to suggestI'm on to something...don't know what, but the BP load will extract, although a bit sticky. It killed the milk jug, and the two paper plates in front of it, went through everything, killed it good. Four grains of Unique, none went through, many did not penetrate the front, and it requires a rod to knock the case out of the chamber.
That was 4fg, now to see if 2fg extracts a little better. Perhaps a bit more chamber polishing. Don't have a .444 case to try, so I'll probably just order some primed and empty 410 shells.
Yes, same difference. I used an old worn out brush just a little bigger than the chamber, wrapped some steel wool on it and a dab of valve grinding compound. I really worked it over, then went no valve grinding compound, then to just steel wool and oil, then finer steel wool, etc. But as StrawHat mentioned, I'm really just polishing the imperfections. Seems to have rings and ridges that just a plain drill would leave. The "funny" thing is that bore is very nice.Sounds like a dumb question perhaps but how have you been polishing the chamber? I like to chuck a brass gun cleaning rod in a drill then screw a brush into that. I figured you may have probably done did something like that but I just figured it wouldn't hurt to suggest
That’s probably because any imperfections in the barrel bother were beyond the bore have been burned and friction eroded away to non-existence. Kinda like my steak knives, those nice sharp edges have worn down to where they hardly cut butter but boy are they smooth.Yes, same difference. I used an old worn out brush just a little bigger than the chamber, wrapped some steel wool on it and a dab of valve grinding compound. I really worked it over, then went no valve grinding compound, then to just steel wool and oil, then finer steel wool, etc. But as StrawHat mentioned, I'm really just polishing the imperfections. Seems to have rings and ridges that just a plain drill would leave. The "funny" thing is that bore is very nice.
You might be right about the dowel and sand paper, although I fear making an oversize chamber even more so, although, if there is a bottle neck, then yes.I would be looking at a 6” wooden dowel with a slot cut for sandpaper. Use a 1/2” hard wood dowel, and a file to size the business end down to about .450 so that you can’t possibly go deeper than intended. Work that last 1/3 inch or so over pretty good and keep an eye on your measurements as you go. Shouldn’t take a whole lot to open the tail end of the chamber up that 10 thousandths.
And consider buying the brass shotshell hulls. Those may play nicer than plastic hulls. Paper hulls were available for reloading 16ga not long ago so those might be available for .410 as well. I can look at my 16ga hulls and see where they came from and try to look for paper hulls.
My 45-70 finish chamber reamer pilot is .447". My 45-70 roughing reamer has a floating pilot that measures .448". The floating pilot is replaceable and it wouldn't be a big deal to make one to fit the .410 bore.I just happen to have a 45/70 chamber reamer. I can provide some measurements if you want. I think I know where its stashed.
Yes. Measure the pilot please. !!!I just happen to have a 45/70 chamber reamer. I can provide some measurements if you want. I think I know where its stashed.
On the floating pilots (from what I'm seeing they are not expensive) (the removeable pilot, not the reamer) do you think they go as small as .400" on a reamer intended for a .45" bore and cartridge?My 45-70 finish chamber reamer pilot is .447". My 45-70 roughing reamer has a floating pilot that measures .448". The floating pilot is replaceable and it wouldn't be a big deal to make one to fit the .410 bore.
I don't know, but I have seen 410 reamers with floating (live) pilots that are removable. The pilot is just a revolving sleeve attached to the reamer, and would not be hard for anyone with a lathe to make. FYI if I knew the specs I could turn out a pilot in a few minutes.On the floating pilots (from what I'm seeing they are not expensive) (the removeable pilot, not the reamer) do you think they go as small as .400" on a reamer intended for a .45" bore and cartridge?
Then let me ask this: do all the removeable/floating/live pilots have the same inside diameter? Would a pilot for a 410 fit on a .45-70 reamer? That's what is confusing me. I'm suspecting that the pilot shank (or whatever it's called) is going to be bigger for bigger calibers. ??? Or not? I did see some pilots for sale, and they were very inexpensive. I'll try to find them again and see if there is any specs on them.I don't know, but I have seen 410 reamers with floating (live) pilots that are removable. The pilot is just a revolving sleeve attached to the reamer, and would not be hard for anyone with a lathe to make. FYI if I knew the specs I could turn out a pilot in a few minutes.
Okay, yes I was just looking at that, it is possible to get a .401-.410" pilot on a .45-70 reamer, or at least on theirs.According Manson Reamers there are 5 different sizes of pilots. There catalog does not give a dimension size. I have several but are for 223 or 6.5 cal. The pilots are ground to 0.0001" stepped in 0.0002"
The 45-70 pilot is a #3 size 30 cal - 475 cal
Will not fit Clymer reamers.
Will PM you and would be glad to pay. I asked my son to donate a couple, but every time he comes over, he "forgot". Yes, putting the reaming on hold for now, but I think .444 brass may be the best solution. Just hate to buy 100 pieces commercially, as that would be an expensive way to find out that it doesn't work any better than the .303 brass. But I'm pretty sure that it does, as the dimensions are closer. Okay thanks. Long live Science!!!Before you go cutting chambers with a reamer, PM me your info. I might have some .444 brass that I could donate to the cause. You know, for science!