Home Forums Reloading Big Game Rifles 7SAUM - AGAIN

About .005" shorter than the mag box, which is waaaay far away from the lands.

Primers are CCI LR Magnums.

Rifle is shooting everything into tiny groups. 1.75" groups today with 150 gr. BT's out at 400 meters.

Rancho Loco,
Our OAL is basically the same and I am using Fed 215's..
My M7 is still in it's factory tupperware so that may be part of the problem although I did get a few sub MOA groups using 120gr Hornady and NBT's..
Anyway thanks for that info..

I couldn't recommend strongly enough for you to ditch that factory plastic and bed it into a McEdge.

Keep at it, my M7 was finicky at the beginning, but once I got it dialed it in, it's a dream rifle.

I have to say, both my SAUM's are a bit on the finicky side. I ditched the plastic and bought a couple of Ti take-offs. Things settled a bit but both are still more finicky than I like - especially with Partitions. Of course they are my bullet of choice...........

I've switched to Fed 215's for my 7 but shoot WLR in my 300. One of the issues I'm sure you are having is the location of the lands and grooves relative to your mag box length. My 300 has L&G at 2.950 with a 180 Nosler - my mag box only accepts 2.84. It's not quite as bad for my 7. I did some tests with longer COAL and found my rifles shoot alot better when the bullets are at least within sight of the L&G. I shot some dang good groups at between 5 and 10 off L&G.

All that being said, my 7 likes a case full of H1000 under a 160 Partition - 1" groups or better. I'm still playing with my 300 but tried some 180 Hornady and H100V yesterday - both have promise.

One other note, my rifles likes the lower powder charges. Load something - esp Re 22 and H 4831 in the 7, and any of the 4350's in the 300 and groups tighten significantly. I didn't buy my SAUM's to get 7mm-08/308 velocities............

Good luck and keep at it. TSX's have always been very accurate for me in several rifles I've shot them.

I call it a time bomb.

Agreed. I get ~ 3100-3150 in 7 SAUM with a 140 cup/core. Load data I've seen for the TSX from the 7 SAUM is only running ~ 3100 give or take 50. Hodgdon's website shows max loads with C/C ging to 2866. Their H414 load for a 140 does 2791. I wouldn't put my face behind a 7-08 shooting those loads. ..........

You got that right.

He's got to be running at least 80,000 psi.

much nicer to have a mild SAUM load that the brass will last than a hot 7-08.....not that all my loads have been mild

I am not to sure about using the 140VLD for bigger animals after shooting a magpie in the weekend.......Impresive blow apart but it appears the pill broke up on just a bird and this is with my slow load......didn't find it to check how muck was in one piece but there seamed to be a few bullet tracks in the ground behind the bird.....When Lambing is over the goats are going to cop a few more shots to check expansion...shoulder and down the length of the goat.....if they dont work they will be the goat loads and I will get some 140TSX's or 160AB's
I am going to have a play with N165 and Hybrid 1000 as well with the 162 amax for the long shots : )

Magpie pic's

Had a play with Hybrid V100 and the 140AB's.....seams to be a good powder just need to test for accuracy, ladder had preasure signs creaping in at 3250fps (just slightly tight lift no ejector stamp)

So will load some up to test groups and I will start at were I was getting 3100fps......I have left the VLD load with the slow load as its just to accurate to mess with

Anyone using h4350 with 168?

Too fast IMO..