Deciding My Next Rifle’s Chambering

[Jud96]

7mm Ackley Magnum. 4D has the reamer.

I don't like renting reamers. Thanks though!

 

[Elk Hunter 338]

Dude! ole @Jud96 there aint nothing wrong with a properly throated 7 rem mag!! brass everywhere ammo everywhere ..

and another oldie but goodie is the simple 7-300 win mag .. everyone ive built has been a hammer

Hornady dropped the ball and kicked it across the field on this one!!!

 

[Jud96]

Dude! ole @Jud96 there aint nothing wrong with a properly throated 7 rem mag!! brass everywhere ammo everywhere ..

Hornady dropped the ball and kicked it across the field on this one!!!

You're right! I've dealt with several 7mm Rem Mags before and they all did great. It's old school, but it's a great round.

 

[Elk Hunter 338]

You're right! I've dealt with several 7mm Rem Mags before and they all did great. It's old school, but it's a great round.

The thing i hate as most have said before is the "new Hotness" "improved rounds" dont improve over the ones we have had for 20 plus years

 

[xsn10s]

You're right! I've dealt with several 7mm Rem Mags before and they all did great. It's old school, but it's a great round.

I've been eyeballing one for a long time. Already have one in mind.

 

[slikmrc]

I would bite the bullet and by factory ammo and move on with the build. 40 to 60 cases would be plenty to get barrel broke in and get an idea what the rifle likes.

 

[Creedmoor shooter]

You know me jud, 7mm Rem mag fan here! I have just a SAAMI spec rem mag and it still flings 180s north of 3000 fps in adg brass and rl-26.

 

[zerosprk]

If it were me, and it's not, but if it were, I'd do the 7mmRM and throat it for the 175-180gr. bergers. I've never had an issue with either the belt at the bottom or the short neck up top in the 10+ years I've been shooting and reloading for mine.

 

[CogburnR]

7-300WM/7mmPractical Brass is easy to get, just need a bushing die for resize.

 

[adam32+P]

Pretty hard to beat the ol 7mm Rem Mag.

If you want a "modern" version do a 7mm Hart.

If you want a little more oomph a 7mm/300 Win is a nice bullet holder.

 

[VinceMule]

Jud96, my 7 mags shooting Remington and Winchester brass shoot very, very tiny groups as custom barrels and Rem factory barrels. All have good glass, muzzle breaks, and great stocks. I mention this because the economy is taking a serious hit, going to get worse. Oddball this and that is going to disappear, as the world is gearing up for conflict to a greater degree than it is now. The 7Mag, 7 PRC may have up to twice the barrel life of a 28 Nosler.
I wish you the very best in your choices and urge you to lay in a supply that will last the barrel.

Again, the loads below shoot sub 3/8" groups in mine and Brothers 7 Rem mags, and they all have muzzle breaks on them with high-resolution scopes.

120 Ballistic tips-R#22 and IMR 7828
120 TTSX " "
140g Nosler Ballistic tips and C/T-IMR, H4.350, 140g TTSX R#19, Win case, 215
150g Nosler Ballistic tips and C/T- R#25 with R#25 and WLRM
154g Hornady sp & SST- R#25, WLRM
160g Sierra btsp and bthp-IMR 4831
162g ELDM-Redumbo, Fed 215
168g Berger vld hunting-Retumbo Fed 215
180g Berger vld hunting-R#22 with CCI 250 at 2850 and R#26, Fed 215 at 3060 fps. Same with Nosler 175g LRAB, sorted by ogive length, seated .003 off the lands.

I don't own any AGD brass and do not plan on buying any, all the above loads shoot 3/8" and smaller, for three-shot groups that repeat.

I really question the reasoning to want another cartridge because there is no belt, as I have been shooting the 7 Rem mag since 1978, and never even paid any attention to the belt. Being beltless does create talking points, and not having a belt sounds cool. The 7 PRC and the 7 Rem mag have almost identical same case capacities....identical.

One 7 Rem mag has a 28" barrel and shoots bug holes with the 162-168g at 3200 fps. When I want more, I go 7 STW which I have shot since 1990 when Lane Simpson first came out with an article in Shooting Times Magazine.

I had one of Larry's Web sizers for belted magnums and never used it, sold it after 5 years. 7 STW did not need Larry's belt sizer either. I do have a 7 Rem mag small base sizer that I have had to use on some factory barrels when I bought some once-fired brass from CROD over on 24hrcampfire.com

The Remington 700s and Browning A Bolts with brakes have shot so well, you would think you were shooting a $4500 gun...2"-3" groups at 600 is not bad.

If you do not like a Magnum, then the 280 Rem shooting the 160-162g bullets at 2920 fps with IMR 7828, fed 210's is attainable. For a heavier bullet, 180g ELDM at 2700 with R#17 is real world....look at that .796 bc bullet at 2700 on a trajectory chart and it outperforms many other choices.

 

[MtnMann]

@Jud96 I didn't see a barrel length listed anywhere, what length are you considering for this build?

 

[Jud96]

@Jud96 I didn't see a barrel length listed anywhere, what length are you considering for this build?

26"

 

[Ucsdryder]

26"

7saum will get you real close to 3000fps with the 26" barrel. I think with your component list it's a no brainer. Great shooter, good barrel life, good on brass and your shoulder.