45-90 Win 300gr RNFP Ammunition! New Jamison Brass!


45-90 Win 300gr RNFP Ammunition!

Out of stock

SKU: MEAD4590RNFP20 Categories: , , , Tags: , Brand:


Mead Ammo is proud to offer, 45-90 Win Ammunition, loaded with Premium Meister lead cast bullets (lubricated and sealed), 300gr RNFP, New Jamison Brass! 20 rounds/box! 

Stats:  Muzzle Vel.                          1660 FPS
           Muzzle Energy              1835 Foot Pounds
           Case                                       Brass
           Re-loadable                            Yes
           Test Barrel Length                   30″


Safety Consideration:
Powder Temperature Sensitivity
Most ammunition is manufactured to perform safely in temperatures up to 85 degrees. Once the temperature starts rising there is a very good possibility that the pressures rise also. These pressures can rise high enough that damage can happen to your firearm and/or yourself.
There are two major causes of cartridge temperature increases: ambient temperatures and chamber temperatures. Ambient temperature can change with air temperature and exposure to sunlight. Chamber temperature can change with air temperature and firing ammunition.
Ambient air temperature can be affected by the air around the cartridge, the heater in your vehicle, your body heat, sunlight on the cartridge, etc. For instance, if you lay your ammunition on your vehicle dash with your defroster running and the sun shining through the windshield. This could heat your ammunition to a high enough temperature to cause damages.
Another, often overlooked situation, is where several rounds of ammunition have been fired in your firearm. Then you chamber a round and don’t fire that round immediately. The heat from the hot chamber will heat up the loaded ammunition to a dangerous level.

Additional information

Weight 3 lbs
Dimensions 8 × 3 × 2 in


Number of Rounds


Type of Product



There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.