question of factory 243 loads

[tbirdman74]

Well, got them thru the chrony, had a high of 3335, low of 3240, avg of 3275. 40* F, 3500 alt., 20 inch barrel. Awful slow for that much powder, me thinks.

[kottke_35]

You are probably losing about 150 or more fps or so with the 20 inch tube vs. a 24 inch. Something to keep in mind. Also, was this the 80 grain winchester round?

B.

[tbirdman74]

Yeah, the win super x 80 gr sp from pic in earlier post.