Common mistakes when sighting in a Marlin 336 for the season?

Incorrect Bore Sighting

When sighting in a Marlin 336, it’s essential to accurately bore sight the rifle. This involves aligning the scope’s reticle with the rifle’s bore using a bore sighting tool or a laser bore sighter. Aiming at a 200-yard target and adjusting the scope for a 2-inch low hold at 100 yards, then rechecking at 200 yards, is a common bore sighting technique. However, if the rifle is not properly aligned, this method can lead to inaccurate shots. To avoid this, ensure the bore sighter is properly fitted to the rifle’s barrel and use a consistent aiming technique.

Bullet Drop and Scope Height

Neglecting to account for bullet drop and scope height can result in inaccurate shots at longer ranges. When sighting in the Marlin 336, use a ballistic calculator or a range card to determine the correct aiming points for different distances. The Marlin 336’s .30-30 Winchester cartridge has a relatively flat trajectory, but it still drops 3.5 inches at 200 yards. To compensate, adjust the scope’s elevation to 2.5 MOA (minutes of angle) high at 100 yards and recheck at 200 yards.

Shooting at Different Distances

Failing to shoot at different distances during the sighting in process can lead to inaccuracy in the field. The Marlin 336’s sight picture will change at different ranges, and the shooter must be able to adjust accordingly. When sighting in the rifle, shoot at 100, 200, and 300 yards to develop a consistent aiming technique and to ensure the scope is properly aligned. This will help the shooter develop the muscle memory needed to make accurate shots at longer ranges.