There is not alot of information out there on my 300 AX, the reason is because I just finished fully testing the round. There are roughly a dozen on order that will be heading out the door probably late this winter and spring but right now I have the only two 300 AX rifles out there, one a 32" barreled heavy rifle and the other a lightweight 27" packing rifle.
I hate to disagree with JP475 and Davewilson but in this case they are flat out wrong.
Yes there is the fireforming step if you form your own 300 AX rounds but as far as performance, it will simply smoke the RUM out of same length barrels and same bullet weights.
The standard 30 Lapua will match or slightly out perform the 300 RUM but the 300 AX will add roughly 100 to 150 fps over what the RUM will offer and do so with dramatically longer case life.
The 300 AX will easily match and even exceed the 30-378 in 26 to 30" barrel length simply because the Lapua brass can handle MUCH higher chamber pressures then the Norma made Wby case and do so with nearly 10 grains less powder.
So while generally I will agree with you two boys, your wrong on this one, the 300 RUM will not match the 300 AX in fact the 300 AX will offer you as much performance over the RUM as the RUM will offer over the Win Mag.
In my testing, you can gain substantial performance over the RUM and do so with longer case life. Am I running higher chamber pressures, YOU BET, thats the entire point behind using the Lapua case.
Again, with all due respect, your wrong on this one.....
Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.
I totally agree with Kirby on this one.
I have a 30/338 Lapua Improved, I designed it with a slightly longer neck and call it the WAMBOMAG.
If I shot the 240 SMK at 3100 fps out of my 29" 300 RUM I'd have to throw away the case because a primer wouldn't stay in it but the WAMBOMAG is a different story.
I have cases with 6 firings on them and the primer pockets are still tight.
It's barrel is 2" longer than the RUM but in all reality that only adds about 50 fps, I can safely get around 2950 with the RUM.
You have to ask your self is it worth the extra $$$ for the Lapua based cartridge over the RUM, most people would say no but to some of us it is definitely worth it.
Wayne aka WAMBO
I hear ya John, 100fps doesn't make a real big difference especially if you take into consideration that the average longrange shooter would probably be fine with the RUM but you know people like us just have to be different and we want the best.
So like you said about the Lapua brass being strong and consistent, it's definitely worth it to me.
Wayne aka WAMBO
That's the kinda problem I like to have. So many choices for a hot rod 30 caliber and now Kirby's about to let another high performance 300 AX out the door. I just need more time and money.
I owned a 338-378 before and I always felt like I was throwing good money out with the bath water because the Norma brass would always open up the primer pockets after 2 - 4 firings. Yes, I could have reduced the powder charge some, but what fun is that? I sold it and bought a 338 Imperial (basically a 338 Edge), expecting to lose some velocity in the process. Difference was the 338 Imperial came with RWS brass. Although the Imperial case looked quite a bit smaller than the 338-378, I actually realized increased velocity and performance because I could fire up the RWS brass with higher pressures, and not have to throw it away after 3 firings.
Yep, I really appreciate the RWS and Lapua brass. Makes reloading a real pleasure when you can fire'em up to their full potential and still get good case life. I understand where Kirby and Wayne are coming from.
The 30 AX Mag is an Improved 338 Laupa necked to 30 Cal..... Other than the Strong and consistent Laupa brass it offers nothing over the 300 RUM IMHO.....
Kirby, Read my post I thought that by stating that the Laupa brass being stronger was a given that higher pressures could be utilized and of coures higher pressures mean higher velocity....
Hell I built a 338 Laupa instead of a 338 Edge just to be able to use the stronger Laupa brass...I am still considering building a 30-338 Laupa for the same reason..Although in the field hunting I don't think that I can accomplise more with one than the other....
If I would have gone into more detail in my first post I believe that I could have avoided the confusion.................
range it,check the wind, dial in correction, aim and only one shot