Webley (Enfield) Mk VI cast bullet use

Good morning Bear
Have found a good starting point with a revolver is the cylinder throat diameters. If the bullet does not fill that diameter it will wobble to any side thus enter the barrel at any angle. Have all sorts of older revolvers whose throat diameters are /were way out of wack when compared to the barrel diameter. The worse of course are the under diameter throats that introduce and under diameter bullet into a fat diameter barrel. Wobble, wobble is about all that gets done sliding down the tube.
Give me at least groove diameter throats and I can get some good accuracy. Even fat throats with softer cast will shoot well.
So measure those throats. Hopefully they are the same diameter at least groove diameter.
Have a caliber 38 Enfield revolver up north. From what I read throat/groove diameters are about as consistent as old Remington and Winchester rifles. So taylor the bullet to your revolver and it will shoot. My revolver probably is a whiole different beast.
Mike in Peru till June.

Haven't 'yet' slugged the chamber mouths or the barrel - it's on my List of Things to Do!
Research has shown the original bullet (yes, there were many .455 loads over the years it served in the British Empire's service) was predominately .454.
There's a good read on the Webley Mk VI here:  www.chuckhawks.com/webley_revolver.htm    Which also lists .454 as the bullet diameter.
This bullet is designed for use in the Webley .455, so may obtain this mold?  
www.midwayusa.com/product/195619/rcbs-1-cavity-bullet-mold-45-265-rn-hb-455-webley-455-diameter-265-grain-round-nose-hollow-base   Reader's comments/reviews are informative.


First I'll measure the cylinder throat and the bore size, before spending that kind of $$'s for a mold!!  
A hollowbase bullet is mostly recommended, from findings/articles located on the web. More research is ongoing...

No, for those who might wonder, I don't shoot factory .45 ACP or .45 Auto Rim ammunition/loads in this fine old classic iron.
I did come across a box of 500 rounds .45 ACP reloads, with what appears to be the older style H&G 200 gr cast bullets, for $30, as a recent even.  Too good a deal to pass up that was!!
When checked closer later on, realized the box was not full of .45 ACP loaded brass, but .45 Auto Rim brass!  Oh darn!!     If I recall correctly, the powder load listed was 4.3 grs Red Dot, which I believe (though doing more research) should be an ok load in the Webley, pressure wise.   Remember, the Webley is best served with loads not exceeding 13-14,000 psi.  Whereas .45 ACP and .45 Auto Rim factory loads are up in the 18-19,000+ PSI levels.   Another project on the table this Webley is.

Bullshop:  have you a hollowbase, .454/.455/.456 diameter 250,-265 gr bullet in your inventory?  I looked in your inventory listing, but not able to tell is any are hollowbase?
Depending on matters, might open the chamber mouths up, depending on findings of the chamber mouth n' barrel diameter dimensions?

Factory loaded .45 Auto Rim shown in the picture for effects only - again, I won't shoot factory .45 Auto Rim in the Webley.

Come to think of it I do have a hollow base mold for a light weight 457" bullet. I think it runs about 180gn. I use it for gallery type loads in the 45-70.