my new turkey bazooka .......870 super mag 26in. bone collector model, truglo halo. all ive done so far is polished the barrel and deep cleaned often. tried several different chokes some cheap some expensive. believe it or not, the tightwad ported .665 throws pretty darn well. out shot the the jellyhead, Carlson and hevi13. I think I tried 11 different chokes of various sizes ranging from .655 to .680. this gun does require a sparkling clean barrel. three shots and it start to grab the wadding and open up the pattern. cheap old tightwad... go figure
10in circle 40yrds.
all #6's
tightwad .665
three shot avg.
hevi13 - 236
remmie heavy 157
federal heavy fc wad 138
WIN EXTREAME - 287
lead
federal prem 101
rem primer 87
win xx 131
WIN LONGBEARD 221
very nice even patterns from the extreame. was very surprised by the longbreads also.
I think I found my sweet spot couple thousand bucks later. lol... this things absolutely going to chop some heads right off. I going to name her "guillotine" can't wait to break her cherry. she's already bruised my cheek and bloodied my nose.
good luck
shoot straight
and have fun out there fellas
edit.......dam Panasonic picture program zapped my pics when I was trying to size them