455 Webley mark 2 loading info

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Looking for light loads . 13000 cup or black powder pressures with titegroup and or trail boss with 255 grain cast bullets.
Would also be interested in mark1 loads
 
Looking for light loads . 13000 cup or black powder pressures with titegroup and or trail boss with 255 grain cast bullets.
Would also be interested in mark1 loads
Can't help with titegroup, honestly I wouldn't use it in an antique but that's just my opinion

For trail boss, do exactly what the manufacture recommends, fill a case to the level a seated bullet will sit, weigh out that charge and that's your maximim. minus 10% and you're good to go
 
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I was using 4gr trailboss in a .45 acp case with 255/65 gr. Recoil was around half of standard .45 acp ball. not sure of OAL but i could check, i was crimping in the provided groove.

4.2-5 gr trailboss is prob the max with 3.5 gr being light. Thought ive tested please do additional research and take with a grain of salt.
 
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Looking for light loads . 13000 cup or black powder pressures with titegroup and or trail boss with 255 grain cast bullets.
Would also be interested in mark1 loads
Are you using 455 mark2 brass or 45acp/ar? Also what type of bullet are you using? Semiwadcutter? There are lots of variables involved but the big three are: bullet weight, powder charge and seating depth.
 
Are you using 455 mark2 brass or 45acp/ar? Also what type of bullet are you using? Semiwadcutter? There are lots of variables involved but the big three are: bullet weight, powder charge and seating depth.
Made 455 mark 1(455 eley) brass from cowboy 45 special. Cut to length, ream out case necks. Turn down the rims.
Probably use old Keith 255 grain 454" mold.
3.5 g of Titegroup shouldn't make much pressure I'm guessing.
Everything very close to 44 Russian
 
Made 455 mark 1(455 eley) brass from cowboy 45 special. Cut to length, ream out case necks. Turn down the rims.
Probably use old Keith 255 grain 454" mold.
3.5 g of Titegroup shouldn't make much pressure I'm guessing.
Everything very close to 44 Russian
Ah a Keith I have some of these so I can make some calculations, what length did you make the cases? I've used unmodified 45 cowboy in a Belgian 450 Adams
 
Made 455 mark 1(455 eley) brass from cowboy 45 special. Cut to length, ream out case necks. Turn down the rims.
Probably use old Keith 255 grain 454" mold.
3.5 g of Titegroup shouldn't make much pressure I'm guessing.
Everything very close to 44 Russian
Using the 22.5mm case length on Wikipedia and seated at the canalour ~9mm deep, 3.5 grains should give velocity in the mid 600s and a pressure of ~12000psi, that's technically within limits but pretty close for my comfort,
Accordingly if you crimp it in the lube groove at ~6mm seating depth and using 4grains should get the same velocity but only a little over 10000psi, all that being said these are just models and tightgroup is a very fast powder for such a heavy bullet with alot of inertia, consider something like WST powder in the future, it has basically the same burn rate and powder weight as bullseye which there is plenty of info written about for Webleys
 
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Guess I should have added that 4grains of WST behind the 255 grain swc seated and crimped at the canalour in a 45acp case is one of my go to loads in my mark1 Webley
 
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