Range results with the 10 and 8 ga
 

Just got back from spending 4hrs at the range and doing some pattern testing with the 8 and 10 gauge. I may be forget some things but anyhow first the heat treated Ts not much of a pattern there but they penetrate well I think, they went straight through the 1/4" ply wood and I recovered some in the 100 yard clay berm and they had no deformation. One picture shows what is either lead #4s or the bismuth #2s stuck in the plywood and you can see the holes where the Ts went straight through. My 8 ga has no choke so perhaps they would perform better if it did? I think the large shot would be more suitable for maybe a 2 1/4oz buffered load. I also decided to test some bismuth 2s in the 8 ga out of curiosity, with this load I wrapped it in masking tape because I have been getting alot of powder burns on my 8 ga cases. Some of the Winchesters have a red sticker partially around them and that protects the cases from powder burns. So I tried masking tape and yep that seams to work.
I patterned some RST 10 ga loads as well and a bismuth handload with a fiber wad. Im probably forgetting some details its been a tiresome day and im about to take me a old man afternoon nap. I ordered some BPI nickel plated 5s last week so im curious to see how well those do and I finally ordered nitro cards for the 10 and 8 ga. Oh on the 10 ga bismuth handload I shot low and to the left, it was the last round I fired and after 4hrs I was ready to pack it up.

Heres the recovered T shot I heat treated and found at the 100 yard berm and the 8 ga shell I was testing the masking tape on. I noticed the 8 ga has loose chambers compared to my Parker 10s so perhaps thats why im getting scorch marks on the cases. I cant tell if the pellets imbedded in the plywood is the lead 4s or bismuth 2s but you can see where the Ts sailed through.

looks like you gave them guns and loads a good work out...them t shot would kill at 100 yards if they hit something...I shot a load of lead bb s at a coyote at about 100 yards it did not kill him dead at the moment but it made him run side ways and it went in a hole in the ground I m pretty sure it died later...I wish I had some of those tss no 2 and bb shot to try out....interesting stuff your doing....charlie

Apologies because I know you've said it before, but what powder are you using in the 8ga?

Bluedot for the 8 and 10 ga.

The lead 4s pattern looks good and i think the bismuth 2s too if i see it pic correctly.

bluedot is good powder for the 8 and 10 ga heavy loads...I use it in my guns....charlie

I noticed with the bismuth the pellet fracturing doesn't appear to be as bad as I've heard. I counted maybe 4 or 5 pellet fractures per shell in the pattern with the bismuth. Just got the shipping notice this morning for my #5 shot from BPI I guess they are getting caught up on their shipping times. I've always had good results with #5s in any gauge. I think with that 8 gauge T pattern I counted 38 hits out of 56 pellets which should be 67% percent. I don't know if this is anyone else's case but for me Bluedot is a pretty dirty powder.

I shoot #5 bismuth for ducks in both 12 ga. and 10 ga. Wicked effective, much better at long range than steel.

Im going to pattern these 2 1/4oz of nickel plated 5s next and I have some
1 3/8oz loaded for the 10 gauge.