[Bobby]

I got my first Marlin last week, a 336RC from 1958.
Took it to the range and 18 rounds through it. Not a single problem. Nice grouping at 20 yards, although a little on the high side (most within an inch high, 3 shots 3 inches high) . Should I adjust the rear sight or just aim low.
BTW, was shooting Win. 170 grain.
Have read 170s go a little high

 

[T REX]

Welcome,from Myrtle Beach,S.C. T REX

 

[1 big hole]

Welcome, from DFW, Texas

 

[LAGun]

Welcome from a fellow Texan in H-town...

 

[Cajun]

Hello and welcome from Louisiana!!!

 

[Lonnie]

Welcome from TN, Lonnie

 

[Bobby]

Thanks for the welcome ;D

 

[marlinluvr]

Welcome from South Florida!. I'd try to get her out and sighted in at a hundred yards before trying to make any changes. 20 yards is too close to tell what she's gonna do at 100. unless of course, you plan on shooting at 20.

 

[Dodgeskinner]

Welcome from Arkansas. New here myself! Based on what you said, the rifle would almost certainly shoot high at 100 yds also. You didn't say if you were shooting open sights or a scope. At 20 yards, open sights should be close to zero, and zero again at around 100 yds - shooting high between those two yardages - but never 3" high. I agree, go out to 100 to see where you're at. I would say adjusting the rear sight or scope down is in order.

 

[Marla]

Hi Bobby,I am from Northeast Florida near Jacksonville. This forum is very informative and friendly. Welcome Aboard.

 

[Bobby]

Thanks for the advice. I was shooting open sights. The only range I have easy access to is an indoor range that maxes out at 25.

 

[marlin54]

Welcome to MO from Pennsylvania!!

 

[Dawei]

Welcome from Olympia, WA; in the great Pacific Northwest - MARLIN® COUNTRY!!!!!

 

[papajohnabi]

Welcome from Abilene and Goldthwaite, TX! John

 

[w5cds]

Welcome, Bobby, from Granite Shoals!

What part of Texas do you live in?

As for sighting in @25yds, I'd adjust the sights so you're about .25in high. That should put you pretty close to zero @100yds. (I'm assuming the 336RC is a .30-30.)

 

[Bobby]

Baytown, 20 miles more or less east of Houston.
Thanks for the advice, yes .30-.30

 

[dch]

welcome from NE PA.