.243 Win 75gr out of a 20"

[Nathan22Outdoors]

243 is cool, but 7mm08 is the best 308-based cartridge lol

As everyone else has said, barrel length is not a huge factor. Yeah, you'll lose a bit of velocity, something like 25-30fps per inch vs listed velocities on a 24-26" barrel, but considering you've got a 1:10 twist it's not like this is a build for super long range work so you'll be fine. 3300fps vs 3400fps isn't a big deal at moderate ranges.

My Speer #12 uses a 22" barrel for their data:
View attachment 969298View attachment 969299

Ah thankyou, good to have some base line information with a 22".
And I guess we can agree to disagree, but personally, maybe it just fills my varmint needs better, im a huge 243 fan