Discussion in 'Handguns: Revolvers' started by cjwils, Oct 17, 2021.
I have a shaved MkII. It already has a “swollen” chamber. However with light loads such as 3.5gr of Bullseye under a 200gr SWC, it shoots POI/ POA at 15yds. It’s also surprisingly accurate. This load ejects easily and cases are reloadable..
I’d stick with light cast/swaged lead bullets. However, a plated 230gr TCFN should make a decent load.
The original.455 load only ran about 550-650fps depending on sources and barrel length. My MkII is 4.5” iirc. You can see the bullets in flight against a white background!
Don’t try to catch one though! Like kicking a cannon ball! It’ll take your foot off at the knee!
Mine served the Empire for five decades.
The .455 Webley Marks V and VI were rated for cordite smokeless powder.
The earlier .455 Webley Marks were black powder and their cartridges should be loaded with black powder and lead bullet matching original .455 Webley black powder specs.
My shaved Webley has never complained about FJM or JHP mild hand loads in the 20+ years that I have owned it.
FWIW, I used pin gauges to measure the cylinder throats of my MK VI, and found them to be .450". I also used pin gauges in the Webley's bore. The largest that would fit was .441". I have read that Webley lands are .004". If that is so, the groove diameter of my gun is ~.449". Significantly less than the assumed .455", and perhaps why my old gun seems to shoot well with my .451" plated bullets.
Fun old pieces of shootable history in any case.
For me I use 45 AutoRim with Berry 230 Gr FMJ bullets and for my Webley I keep the pressure around 700 fps. This has been an accurate load for me for this weapon. Safe and fun all at the same time.
This is from 8 yards
In my 1920 made Mark VI , which is shaved the same bullet in .45 Auto Rim cases, which are reserved for .455 Webley chambered weapons which are shaved , I up that to 4.3 grains as they are latter guns and Colt and S&W also. You are talking 770+- fps in 5-6" barrel guns with the .45 AR cases. The 4 grains in the .455 Mark V 4" barrel is 50 FPS less .
Bore: ~.444 (not easy to measure without gauge pins being a 7 groove barrel)
Tighter than I thought it would be.
They should shoot very well.
The lead will swage down easily and the hollow base will obturate to seal the bore.
ETA: Went back through my notes on the factory Fiocchi .455 ammo. I made a mistake on bullet diameter, it was actually .454". Exact velocity in my gun was 554 FPS.
But, 454 through any of the bores mentioned should not be much issue.
I use Cerrosafe to cast my chambers and barrels for measurement. Lot easier than forcing a lead slug down the barrel or chamber and gives you more detail too. Odd numbers of lands and grooves does make is fun.
Before I discovered Cerrosafe, firing a lead ball into a bucket of sand worked for me. It doesn't take much more than a primer to push a fishing weight through. Until it does.. then it's a pain to get it the rest of the way though. Top breaks aren't so bad, most pistols and bolt-action rifles are easy, but semi-auto rifles with fully-enclosed actions and lead balls stuffed into the mid-bore can be no fun at all.
He didn't and now they are gone.
And there are LONG lines waiting for more unfortunately. The custom casting outfits I prefer have long waits or just aren't casting less popular bullets to save on resources. GT Bullets (one of my favorites) has .454" 255gr Hollow Points cast from 2-2-96 - about a 2 month wait. Reed's makes the genuine article, .455" 265gr. HB-LRN but they're OOS and no date for when they'll be available.
The GT's I use in .45AR pumped up to .45ACP velocities for my Smith 1917, and in .45Colt for the Ruger Vaquero, sized .452", and they're very good bullets in both revolvers. My Webley is a Mk.I so I use the HB-LRN exclusively and BP in .45AR cases. No sense beating up an antique.
FWIW, I did previously push a lead slug through the barrel. I couldn't precisely measure 7-groove diameter, but the largest diameter I could measure on that was .450". So I think it safe to say that groove diameter of my particular MK VI Webley is approx. .450".
Separate names with a comma.