Which twist rate is best for my needs?
The 1-15 twist rate has proven overall to be the most accurate with the largest variety of bullet weights/loads and will meet most people's needs. Basically if you won't be shooting 150gr bullets in temperatures below 30 degrees the 1-15 twist is the best overall choice. However if you plan to shoot mostly 150gr bullets and/or live in a very cold climate the 1-13 twist may be a better choice for you. The 1-11.25 twist is only available in the short pistol or SBR barrels and is needed to fully stabilize the heavier bullets in a cold climate.