450Bushmaster.net

Finally was able to get the chrono out to the range with me. Long overdue, but fun none the less.

Ruger American 22 inch barrel (1/16)
275 TSX
35.5 gr H110
2.406 OAL
Taper crimp .474
Brass was mixed starline and hornady, half new, and half multi-fired.

1 - 1915
2 - 1955
3 - 2057
4 - 1999
5 - 1963
6 - 2060
7 - 1929
8 - 1918
9 - 1987
10 - 1940

Avg - 1972
ES - 145
SD - 53

This load is MOA at 100 assuming i do my part. Today I had the target at 25 because my focus was being consistent through the chrono. It was just one giant hole in the target after 10 shots. Lol.

I also had a chance to run a box of federal's new fusion offering. Cold bore (if you could ever call it that at 85 degrees), threw the first shot about 2 inches high. Otherwise it was right at 1 inch group at 100 out of the same gun, each 5 shot string. The box claims 2200 out of 24 inch barrel. I only averaged 2067 on the five i put through the chrono. Need to run some through the AR too, but overall I was impressed with accuracy.

Nice work!
Couple things, though. I would suggest seperating your cases out. There is a difference in weight and capacity between Hornady and Starline brass. There is also a small difference between new brass and multi fired. Another thing I would check is your case fill percentage with W296/H110 at that COAL. It is suggested to not go less then 80% when using W296/H110. I load the 275 TSX around 2.335 and 80% fill with W296 is 35.0gr using once fired Hornady brass.

I guess I could have been more clear, I did have them separated. Shot a five shot string of multi and then a 5 shot of new. Actually, 1-5 on my list are multi and 5-10 are new. The statistical difference was so small i didn't bother separating them in the post.

Pretty sure it is at least 80%. It is just under the top band when I crimp. pretty sure half the bullet is in the case, but I will confirm. Thanks!