The Firing Line Forums - View Single Post - Will new lot of bullets change point of impact?

elrotundamundo · May 8, 2012, 05:17 PM

CAUTION: The following post includes loading data beyond currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information.

I finally worked up the load I want to hunt with this fall, but used up most of my box of bullets. My question is: will the next box I buy of identical bullets shoot to a significantly different point of impact?

Rifle: Mossberg 4X4 24" bbl. with muzzle brake in .270 Winchester

Primer; CCI large rifle (standard)

Case: Winchester

Powder: RL22 (57 gr.) (.5 gr over max on Alliant's website but 1.5 under max in Lyman 48th Edition)

Bullet: Nosler 140 gr. Accubond

The rifle groups better WITH the muzzle brake.

I killed an elk last fall with the 140 gr. Accubond in Winchester factory load and really liked the bullet performance so I am trying to approximate that load.

I get 5/8" groups at 100 yards and extraction is easy. Primers are slightly less radiused than 55 gr. loads but only slightly and are by no means flattened.

Thanks in advance for your help.

May 8, 2012, 05:17 PM	#1
elrotundamundo Member Join Date: August 14, 2011 Location: North Idaho Posts: 56	Will new lot of bullets change point of impact? CAUTION: The following post includes loading data beyond currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information. I finally worked up the load I want to hunt with this fall, but used up most of my box of bullets. My question is: will the next box I buy of identical bullets shoot to a significantly different point of impact? Rifle: Mossberg 4X4 24" bbl. with muzzle brake in .270 Winchester Primer; CCI large rifle (standard) Case: Winchester Powder: RL22 (57 gr.) (.5 gr over max on Alliant's website but 1.5 under max in Lyman 48th Edition) Bullet: Nosler 140 gr. Accubond The rifle groups better WITH the muzzle brake. I killed an elk last fall with the 140 gr. Accubond in Winchester factory load and really liked the bullet performance so I am trying to approximate that load. I get 5/8" groups at 100 yards and extraction is easy. Primers are slightly less radiused than 55 gr. loads but only slightly and are by no means flattened. Thanks in advance for your help.