I appreciate the input concerning 124 p+ and 147 gr. Is there any test info to back up those choices?
I appreciate the input concerning 124 p+ and 147 gr. Is there any test info to back up those choices?
Just found this
In a response to a question about which grain 9mm Ranger ammo to use in a short barreled pistol including 3.5" and 3", I got the following response from Winchester LE Ammo:
When we redesigned the Ranger T Series of ammunition we widened the velocity window under which the round would expand to allow for the slower velocities that shorter than standard barrels produce. What this means is that if you own a standard or sub compact pistol the round should have adequate expansion. In 9mm I would recommend the 147 grain bullet as it loses a lower velocity percentage than the faster lighter bullet in shorter than normal barrels. This is because the bullet has more dwell time in the bore and has a greater opportunity to burn the powder before the bullet exits the bore. Powder that is burned outside the bore does nothing for velocity. The lighter faster bullets generally have more powder to burn and since the lighter faster bullets have less time in the bore they are not efficient burners of powder in the shorter barrels.
We increased the velocity window under which the round would expand by increasing the size of the hollowpoint, tweaking the jacket thickness and the depth of the cuts on the inside of the jacket petal segments.
Sincerely,
Paul Nowak
Senior Technical Specialist
Winchester Law Enforcement Ammunition
I hope this helps.
I'm late to the party, but I thought maybe some chronograph data from a 3" barreled Kahr M9 may help:
124 grain Speer Gold Dot +P
Ave 1,133 fps
124 grain Remington Golden Saber Bonded +P
Ave 1,062 fps
147 grain Winchester Ranger-T
Ave 926 fps
147 grain Federal HST +P
Ave 926 fps
You'll probably get a scootch more velocity out of the HK.
***ETA: these velocities are from 5-shot averages.
Just did a check on the Gold Dot 124 and the ranger 147. The % lost in velocity was less in the 147 but sufficient in both. Another plus is that the 147 does better in multiple layers of denim supposedly because of a deeper cavity. I think you are correct I might pick up a little from the slightly longer barrel and polygonal rifling. Thanks for the info. You were right on time
No problem! I went with the HST 147+Ps for both the Kahr and a G26. As you said, the 147s lost the least amount of velocity from the shorter barrels.