Guys,
I am shooting a Marlin 336 with 170 gr Winchester SP zeroed at 100yds. What is my drop in inches at 200yds?

Google is your friend

About 6 1/2 inches

Looks like you will get a drop of around 8.4 inches at 200 yards.

sight it in 2" high at 100 then check your trajectory, 2" at 100 yards is 4" at 200

Thanks!

About the trajectory of tossing a pumpkin. Joking sort of; what would you want to be shooting at with a 30-30 at 200 yards?

Hey now waggler! Ok, might be a bit more than a little truth to that statement. I like to tell people that anyone can get 200 - 300 yards from a deer for a shot with a rifle. Takes a real woodsman to get close enough to shoot one with a 30-30 My wife shoots a .243 and refers to my beloved 30-30 as "the club".

Buddy of mine (god rest his soul) always said be careful hunting with a 30/30, if you shoot at something as you walk up to the spot where the target was, stay low, good chance the bullet will hit ya in the back of the head!

My first hi-power was a 30-30. very capable cartridge. Need to be within 150 yards or so for deer. Those flat nose bullets shed velocity quickly. been reading about some plastic tipped pointed bullets they are selling now that wont fire the round in front of it in those tube magazines. If you want to shoot that far I would look for some of those improved bullets. I just shoot mine like I always have. It works great if you dont push the range. No scope on mine either. I can still bead down on a deer at a 100 yards without one.

Hornady LeverRevolution https://www.hornady.com/ammunition/leverevolution

I have not tried this stuff but it likely extends your range a bit.

To get a good answer. You need a bit more information. Hight of site above center of bore, BC of the bullet your using and actual muzzle velocity. Without those your just getting guesses

Here is a link to a ballistic calculator that is very useful



Ballistic calculator

http://gundata.org/ballistic-calculator/

Rickey

How does barrel length affect this?
If steeltraps barrel length were 10", how would this change the guess?

I've found calculators of old to be suspect,
but am sure they have improved.

My googler is shot out.

Figure 25 FPS per barrel length,

Per inch sounds realistic.
I need to get back to hand loading. Thanks.

My marlin 336 with a 4x scope, shooting 170gr federal blue box is zeroed at 50 yards, hits just about an inch high at 100yrds, and hits about 10 inches low at 200.

I killed a doe at 200 yards this year. Aimed right at the top of her back.

For 30-30 velocities, the accepted number is 10 feet/second/inch of barrel length. > > 2360fps (20" barrel length) - 10fps/in(20"-10") = 2260 fps muzzle velocity
Multiple sources referenced in Sniper's Hide Forum

30-30 150gr SP, open sights, 10" barrel
Std ATM conditions, +750 ft ^ sea level

50 yds +1.7 inch 2079 fps 1440 ft-lbs
100 yds +2.1 inch 1906 fps 1210 ft-lbs
150 yds +0.0 inch 1744 fps 1013 ft-lbs
200 yds -5.0 inch 1593 fps 845 ft-lbs

I know how people think . But why such a heavy bullet. My dad used a 30-30 for years and shot 125 gr bullets in it. 1 in high at 100. Mid body hold out to 200 = dead deer

probably a throwback to when it was conceived the age of heavy lead bullets and since it worked so well why change it