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I took jethunter's advice and tried the bullets with 44 special load data (5.5gr Reddot) since it has such a tiny bearing surface. Shot fine (about 4" low at 50yds) and ran a bore snake down the...

I was thinking that was a possible reason but figured if it was slipping there would be leading along the entire length. You could be right that once it starts accelerating at a slower rate it...

I know Unique is meant more for 44 spl and not 44 mag but that and H110 (which only seems to work well for magnum loads) are the only powders I have that I can find data for. I will go and try some...

I didn't slug the bore but I'll cast some .438" round balls tomorrow to do so.
The powder I'm using is Unique. I also tried H110 but it didn't work so well.
Accuracy is fine with the .435" but was...

That's what I was going to try next. I have a .430 that's doing me no good so I was going to ream it out to .432" and try again. If that failed I was going to go up to .433".
I was just wondering...

Any reason why tumble lubing would increase leading? First I've heard of it.
I've also read many people reporting no leading with plain base bullets of at least .432" diameter.

Hello,

I know the micro groove barrel leading issue has been done to death but I ran into something new.

I'm using WW alloy, water dropping the bullets, and tumble lubing them with the Lee...

Buckshot leaves a lot more room between the pellets than smaller shot. I have never found a 1-1/8 oz wad meant for birdshot that can actually fit 1-1/8 oz of buckshot. I am using 1-3/8 oz wads to...

I have used Federal Top Gun hulls in place of Remington plastic hulls in some slug and buckshot recipes and have not had any issues. The fold crimps can crack after the first reload on the Feds so...

For the plain wad I'm using WAA12 wads (orange ones).
For the nitro card loads I needed some more room in the hull so I used Claybuster clones of the WAA12R wads. Red ones with really short legs I...

I just shot a bunch of Lee 1oz slugs yesterday with a combination of plain plastic wads, wads with 1x .125" 20ga nitro card, and 2x .125" 20ga nitro card. My slugs are cast from WW's and water...

I recently did some testing with Reddot and Unique to see what velocity I could get out of them.

Lee 1oz slugs
WAA12 wads (orange)
Federal high brass hulls
CCI 209M primers

20gr of Reddot...

I worked up a very comfortable load using the Lee 1oz key drive slug mould.

Win AA hulls or Rem Game Club; both work fine
WAA12 wad (I think? They're orange.)
20gr Alliant RedDot
CCI 209M...

Pressures tend to increase a little but the buffering has a larger effect on preventing shot deformation then the somewhat increased pressure has on deforming them.

I believe a carbide reamer is used to remove chokes and constrictions. Honing stones are just used to polish it up after the reaming is done. I've never done it myself but that is what others have...

.690 RB needs a wad with very thin petals to fit. The vast majority of wads wont fit a 690 ball.

For 1oz Lee key drive slugs I use WAA12 (orange) and WAA12R (red) wads or the claybuster clone and...

I've only ever heard of them being loaded with smokeless. Everywhere I've looked says they can easily handle much higher pressure than plastic or paper hulls assuming the shotgun itself can. Just...

That's the first I've seen mould handles like that. I may need to invest in a pair for personal "testing".

I have had similar results with dealing with Accurate Moulds. I ordered a 900gr .730"...

The most common pumpkin ball for 12ga is .690 and weighs I believe a tad over 1oz.
If the Lee slugs are too wide with your wads you may need to use a wad with a thinner pedal. I run Lee slugs in...

I've seen pics of the results of OOB firing and they are usually more damaging to the rifle as well as a more ragged case. If I had to guess I would say simply a case head separation. Looks like the...

My MEC 600jr sizes .410 cases the same way as a Lee load all but the sizing ring is on a post instead of being separate. After you press the ring down onto the case a post inside pushes the hull off....

For what it's worth, I fireform .303 British cases to 410 brass shotshells for my single shot 410. I load them with large magnum pistol primers.
Of course being in Canada I have more range...

With the cloth patches, is there any lube on them? I searched around and I can't find anyone talking about dry vs. lubed patches. I have seen "prelubed" cotton patches for sale for muzzle loaders...

@jabilli
Burning teflon can release poison gas. I really wouldn't want to try melting teflon to cast around stuff.
As for lead powder mixed with polyester resin I never thought of that. It may...

I've cut 3-1/2" hulls down to 3" and loaded them with 2oz wax slugs using 2oz, 3-1/2" load data (no crimp). A sharp x-acto knife works best.
I've also cut 3-1/2" hulls down to 3" and loaded them...