This

4-barreled glider gun showed up in D4_x4 earlier:

`x = 42, y = 42, rule = Life`

20b2o$20b2o2$36bo$35bobo$35bo2bo$18b2o16b2o$19bo$19bo$18bo9$6bo2bo$6b

3o$2o38b2o$2o38b2o$33b3o$32bo2bo9$23bo$22bo$22bo$4b2o16b2o$3bo2bo$4bob

o$5bo2$20b2o$20b2o!

Interestingly the loaves eat glider pairs travelling orthogonally to the streams fired; one pair of gliders hitting the loaf adds a pair of ships (

EDIT: d'oh, of course they're actually boats; thanks dvgrn!), the next pair of gliders (156 generations later) destroys these again. As a result the gun is period 312 overall even though it fires two pairs of gliders every 156 generations.

Removing the loaves results in an 8-barrelled period-156 gun:

`x = 42, y = 42, rule = Life`

20b2o$20b2o5$18b2o$19bo$19bo$18bo9$6bo2bo$6b3o$2o38b2o$2o38b2o$33b3o$

32bo2bo9$23bo$22bo$22bo$22b2o5$20b2o$20b2o!

Sample soup:

`x = 32, y = 32, rule = B3/S23`

ooobbobbbobooooooooobooooooooooo$

oobooobobboobobooboooobbbbobbooo$

obboooboboobbbbooobooobooboboboo$

booboobobbbbbbbbbbobbbbobboobobo$

booobobbbobbbooooobobbooooobobbo$

ooooobooboooobbobobboobobobooooo$

bbbbbobbbboobboooobbbbbboboobbbo$

boooboboooboobobboooobbooobobobo$

bbbbbbbobobbooooobboobbboboooobo$

oboboobooboobbbobboobbbbbbbobbbo$

boobboobbooobooooboboobbbbobbooo$

oobbbooobooboobbooobboboobobboob$

obbbboboobboboooobobbbooobbobooo$

oobbobbbobooobobobboooobobbboboo$

obbboboooboboobbbbbbobbboooobobo$

ooobooobooobobbbbboooobobobobooo$

oooboboboboooobbbbbobooobooobooo$

oboboooobbbobbbbbboobobooobobbbo$

oobobbboboooobbobobooobobbbobboo$

ooobobbooobbboboooobobboobobbbbo$

boobboboobobbooobbooboobooobbboo$

ooobbobbbbooboboooobooobboobboob$

obbbobbbbbbboobbobbboobooboobobo$

oboooobobbboobbooooobbobobbbbbbb$

obobobooobboooobboboobooobobooob$

obbboobobbbbbboooobboobbbbobbbbb$

oooooboboboobbobobbooooboobooooo$

obbobooooobbobooooobbbobbbobooob$

oboboobbobbbbobbbbbbbbbbobooboob$

ooboboboobooobooobbbboobobooobbo$

ooobbobbbboooobooboboobboboooboo$

ooooooooooobooooooooobobbbobbooo!

Haul:

here.