x = 223, y = 119, rule = B3678/S34678
45b5o$$39boo4b5o4boo$36b3obb4o5b4obb3o$34b27o$34b11o5b11o$33b29o$33boo
b3obb4o5b4obb3oboo15boo$39boo4b5o4boo$63b4o8bo4bo$45b5o12bo4bo5b4obb4o
$60b4obb4o3b4obb4o$60b4obb4o5boobboo$62bo4bo5$100bo$99b3o$98b5o$99b3o$
100bo5$62bo4bo$60b4obb4o5boobboobobbo$60b4obb4o3b4obb9o25boo$45b5o12bo
4bo5b4obb9o25b4o$63b4o8bo4bobb4o27b3o$39boo4b5o4boo27b5o25b5o$33boob3o
bb4o5b4obb3oboo15boo3b6o25b5o$33b29o20b4obobo21bobobobobo$32b13o5b11o
20b5obobo21bobobobobo$33b28o20b7o25b5o$33b26o20b9o25b5o$14boo16b3obb
22o18b11o25b5o$14boo17boo4b18o20b4obobobobobobobo11bobobobobobobobobob
o$13b4o15b4o5b16o19b5obobobobobobobo11bobobobobobobobobobo$14b3o15b3o
6b14o22b4obobobobobobobo11bobobobobobobobobobo$11bo25bo4b13o22b4obobob
obobobobo11bobobobobobobobobobo$11bo25bo4b5ob5o25b3obobobobobobobo11bo
bobobobobobobobobo$14b3o15b3o9bo5bo26b4obobobobobobobo11bobobobobobobo
bobobo$13b4o15b4o41b4obobobobobobobo11bobobobobobobobobobo$14boo17boo
41b5obobobobobobobo11bobobobobobobobobobo$14boo17boo42b4obobobobobobob
o11bobobobobobobobobobo$77b11o25b5o$78b10o25b5o$78b10o25b5o$15boo15boo
46b6obobo21bobobobobo$15boo15boo46b6obobo21bobobobobo$14b4o13b4o47b6o
25b5o$13boboo15boobo46b6o25b5o$13bo21bo48b3o27b3o$13bo21bo48b4o3boo15b
oo3b4o$13boboo15boobo50boo3boo15boo3boo$14b4o13b4o55b4o13b4o$10boo3boo
15boo3boo52boobo11boboo$8b4o3boo15boo3b4o53bo11bo$8b3o27b3o53bo11bo$7b
5o25b6o48boobo11boboo$7b5o25b6o47b4o13b4o$5bobobobobo21bobob6o46boo15b
oo$5bobobobobo21bobob6o46boo15boo$7b5o25b10o$7b5o25b10o$7b5o25b11o$obo
bobobobobobobobo11bobobobobobobob4o42boo17boo$obobobobobobobobobo11bob
obobobobobob5o41boo17boo$obobobobobobobobobo11bobobobobobobob4o41b4o
15b4o$obobobobobobobobobo11bobobobobobobob4o26bo5bo8b3o17b3o$obobobobo
bobobobobo11bobobobobobobob3o25b5ob5o11bo11bo$obobobobobobobobobo11bob
obobobobobob4o22b13o11bo11bo50bo$obobobobobobobobobo11bobobobobobobob
4o22b14o5b3o17b3o$obobobobobobobobobo11bobobobobobobob5o19b16o5b4o15b
4o45bo$obobobobobobobobobo11bobobobobobobob4o20b18o4boo17boo41boo7boo$
7b5o25b11o18b22obb3o16boo38boo6bo6boo$7b5o25b9o20b26o51boob3obb6ob6obb
3oboo$7b5o25b7o20b28o51b9obb7obb9o$5bobobobobo21bobob5o20b11o5b13o30b
oo4boo13b13ob13o$5bobobobobo21bobob4o20b29o34boo16b8obb7obb8o$7b5o25b
6o20boob3obb4o5b4obb3oboo26boob5obb5oboo10b3obb6ob6obb3o$7b5o25b5o27b
oo4b5o4boo32b5obb4obb5o13boo6bo6boo$8b3o27b4obboobboo69b16o17boo7boo$
8b4o25b9obb4o5bo4bo12b5o39b4obb4obb4o22bo$10boo25b9obb4o3b4obb4o56b5o
bb5o$39bobbobo4bo5b4obb4o61boo29bo$57bo4bo60boo4boo$46boo10b4o4$220bo$
214bobb5o$214b3ob5o$214bobb5o$220bo4$46boo10b4o$57bo4bo60boo4boo$44bo
4bo5b4obb4o61boo29bo$42b4obb4o3b4obb4o56b5obb5o$42b4obb4o5bo4bo12b5o
39b4obb4obb4o22bo$44boobboo69b16o17boo7boo$69boo4b5o4boo32b5obb4obb5o
13boo6bo6boo$63boob3obb4o5b4obb3oboo26boob5obb5oboo10b3obb6ob6obb3o$
63b29o34boo16b8obb7obb8o$64b11o5b11o32boo4boo13b13ob13o$64b27o52b9obb
7obb9o$66b3obb4o5b4obb3o54boob3obb6ob6obb3oboo$69boo4b5o4boo63boo6bo6b
oo$152boo7boo$75b5o77bo$$157bo!
A period 1224 p32 ship gun.
This does not make use of any rockets.  It uses nova-to-eater and
eater-to-nova reactions in a loop.  The reactions use period 36 and
period 8 spark oscillators.
David I. Bell, December 1997