akmtnhnt
Well-Known Member
Because for the powder capacity, everyone would rather have a higher BC 284 bullet going faster.....the most under used of them all, .300saum...great fat little cartridge that no one hardly ever mentions any more.
Because for the powder capacity, everyone would rather have a higher BC 284 bullet going faster.....the most under used of them all, .300saum...great fat little cartridge that no one hardly ever mentions any more.
One thing about a longer action is that it allows for the use of longer ogive bullets and longer overall lengths. Very familiar with the 185 Juggernaut as it was the standard that we used to test profile changes that would allow improvements in BCs. Interesting that an AI modification of the SAUM case increases capacity beyond the WSM.Here is a visual example of why the SAUM is better suited to a short action than a WSM.
Left to right - 300 SAUM, 6.5 SAUM Improved necked up to 30 cal and 300WSM.
COAL on the SAUM cartridges is 2.950 with a Berger 185 Juggernaut with the bearing surface above the neck/shoulder junction. The WSM is seated at 2.980 and the bearing surface is slightly below the neck/shoulder junction. This is really of no importance if you are shooting one and done and not reloading.
Another thing to note, the improved version of the SAUM cade actually has higher powder capacity than the WSM.
EDIT: I'll post the picture with the bullets seated tomorrow. I thought I had it on my phone but I don't.
No doubt. The SAUM/WSM/6.5PRC definitely benefit the most from a medium or long action but if you don't have that option the SAUM is the best option for a short action IMO. And it's best used with either the Hawkins Hunter DBM or a 3" Wyatt's center feed box. It is sad that the 300 SAUM never caught on like it should have for those that prefer 30 caliber. It seems to be seeing a resurgence in the competitive shooting world.One thing about a longer action is that it allows for the use of longer ogive bullets and longer overall lengths. Very familiar with the 185 Juggernaut as it was the standard that we used to test profile changes that would allow improvements in BCs. Interesting that an AI modification of the SAUM case increases capacity beyond the WSM.
Can't find any 6.5 PRC or 6.8 Western brass. Much harder to find that stuff than it would to rebarrel a 270win with an 8 twist barrel and use the high BC .277 cal bullets. Might even do a 270Win AI.Not sure if you have noticed, but there is a distinct lack of WSM brass. You might be better getting a 7 SAUM. Seems like that one has some people interested.
or 6.5 PRC.
Whatever you do, please take some time to complain to Lapua, Peterson, Alpha and ADG about the lack of available WSM brass right now. I've been on a 2yr hold basically due to lack of quality brass.
Can't find any 6.5 PRC or 6.8 Western brass. Much harder to find that stuff than it would to rebarrel a 270win with an 8 twist barrel and use the high BC .277 cal bullets. Might even do a 270Win AI.
Great! ThanksHere's some brand new ADG right here:
SOLD - ADG 6.5 PRC Brass
For Sale: NIB 4 boxes of 50 for a total of 200 ADG 6.5 PRC brass. SOLDwww.snipershide.com
I see it for sale on the Hide quite regularly.
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Great! Thanks
What powder do you shoot out of that 300 saum imp mike? Also what barrel length? I have h4350, 5lbs of rl16, but also wonder about vhit 555 with that 185 juggernaut. thanksHere is a visual example of why the SAUM is better suited to a short action than a WSM.
Left to right - 300 SAUM, 6.5 SAUM Improved necked up to 30 cal and 300WSM.
COAL on the SAUM cartridges is 2.950 with a Berger 185 Juggernaut with the bearing surface above the neck/shoulder junction. The WSM is seated at 2.980 and the bearing surface is slightly below the neck/shoulder junction. This is really of no importance if you are shooting one and done and not reloading.
Another thing to note, the improved version of the SAUM cade actually has higher powder capacity than the WSM.
EDIT: I'll post the picture with the bullets seated tomorrow. I thought I had it on my phone but I don't.
I tried N555 in my 300 WSM and got pressure at lower velocity than N560 shooting 168 grain ELD-M. Not sure if that helps you or not. Rifle is a Christensen Ridgeline.What powder do you shoot out of that 300 saum imp mike? Also what barrel length? I have h4350, 5lbs of rl16, but also wonder about vhit 555 with that 185 juggernaut. thanks
I had a custom Borden done in 300 WSM. My first powder I tried with Norma brass, as my other commercial 300 WSM rifles love that brass. I found such extreme pressure with even the lowest powder charges that it literally locked the bolt shut. I could not open it at all. Frustrated, I packed up my junk and went home. I called Mr. Borden to discuss. He asked, "what brass are you using?" When I told him, Norma, he started laughing. He went on to inform me of the different ductility properties of market brass & that Norma was the softest of all. He asked if I got the bolt open yet & told me to get a hammer handle or a substantial piece of wood and literally beat the bolt open. He said he'd done it many times. He suggested I try a different brass mf'r & start with the highest charge & that the first two shots would tell me everything I would need to know. So, I loaded 5 R-P brass with 64gr VV 550, 155 Scenar's & fired the first two rounds of five. Those two went into the same hole & all of them printed 1/2 moa @ 3285 fps & ZERO pressure signs. Bolt lift was normal. That is my hunting load for that rifle now. And this all started with my first load development work with a brand new gun. It went from unusable to dialed in after 12 rounds fired.I tried N555 in my 300 WSM and got pressure at lower velocity than N560 shooting 168 grain ELD-M. Not sure if that helps you or not. Rifle is a Christensen Ridgeline.
I would go with something of the saum parent case.