The .50cal Rapid project

Started fitting the 50cal barrel
thanks to Tofazfou for the donor barrel for this project

I started doing this to see if the Rapid platform can support such a caliber.
and to improve on any parts that are already produced
some testing done as its just getting under way .

the Barrel started from a dragon slayer 50cal that was converted to a 45cal
and was left over for this project .
here was the 45 and 50cal barrels


the barrel was then turned down to fit in the rapid receiver and ported for the install.





next was the pellet probe this is done in two parts the outer part that seat on the barrel and the inner probe that pushes the pellet or in this case the round ball in the barrel












due to the outer O.D. of this barrel i also had to slab cut it .060th to clear the 500cc air bottle


you can barely see the flat in the barrel





For the ammo I went with
Hornady .50 Cal, 176 Grains, Lead Round Balls ordered from
Impact Air Gun
he had the best price on them .
720 fps will give 200fpe so that's my set goal.
The Dragon Slayer barrel i have from the gun I think was up around 600 plus fps form the past setup . .
here are the 50cal round balls next to some 25cal in the middle and some of the .22calgold kodiaks lower



best output from this to date is 110fpe or 529fps



still working on the setup and internals parts .
and then heres some shot strings for past testing.

first set

it was up to 107.2 fpe
519.3
519.5
518.9
515.8
520.2
518.7
519.4
small shot string
its good like this for several rounds .and latter i did some inturnal stuff and moved that number up .
524.4
525.2
526.4
524.4
524.1
529.1===110.9fpe
526.8
524.9
527.1
tic tic tic tic a little at a time

enjoy
the Swifty Fifty Post