looking for feed back on 7mm-08 AI, what kind of gains can be expected with 140's and 150's out of 24in. barrel.
thinking my version of a mt. rifle in this caliber.
thanks for your time
I would imagine the gains to be very similar to what I get from my 260AI which is 150-200fps depending on the bullet and powder used. The main benefit I can see with changing to the AI version would be gaining just enough case capacity to push the 168 class bullets to a reasonable velocity.
Great advice. With the .284win seeing a resurgence in popularity factory ammo is becoming available again which I always consider a plus.As an alternative you could rechamber to the 284 win. I wouldn't rechamber to either one unless I tried a dummy round in the gun to see how it fed.
An inexpensive way to get closer to 7-08AI performance is to switch to RL-17.
A few more comments about a 7/08 AI.
First, If you are re barreling or building from scratch the 7/08 AI would be a good choice over the standard 7/08 because not only would it up the velocity, the brass will last longer because of the 40o shoulder and the added case capacity will allow you to use other/slower powders.
There is an efficiency advantage in the AI cases (Less powder to get more velocity) and many bench rest shooters believe that the 35o to 40o shoulder is more accurate.
It is also a good way to clean up a poor 7/08 chamber when you set the barrel shoulder back 1 thread you clean up the lead angle and the throat. and no modifications to your receiver would be necessary. Some feel that feeding becomes a problem but I have never had a feeding problem with the 40o shoulder.
I don't look for velocity gain when I go to an AI cartridge, I look for total performance in the size of certain cartridges. There are many cartridges that are faster than the 7/08 or the 7/08 AI so it becomes a choice of performance and recoil as to which cartridge is best for you.
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