I have been working at getting consistent sub MOA groups with my Winchester Model 70 in 7mm Rem Mag. I have been tricking powder to the .10th of a grain I am running Norma brass I have had the best luck with 162 grain Eld X bullets with 61.0 grains of H4350. With this load I have shot a five shot groups at 200 that were1.25 - 2" groups. I have been using CCI 200 primers as I have a good stock of those. I found 50 CCi 250 Magnum primers in my stash and am thinking about working up a load with them but don't want to waste the time if they continue to be unobtainable to wildly expensive. I am curious what primer powder combinations have worked well for you guys.
7mm primers
- Thread starter nick22
- Start date
.308 Norma
Member
Not doubting you, I just didn't know that CCI 250 primers had become "unobtainable to wildly expensive." Because I use CCI 250 primers in several different rifles, I have a sizable stockpile of them. Then again, I'm old, so a "sizable stockpile" for me might not be the same as a "sizable stockpile" for you.
At any rate, for sub 1" 3-shot groups (with 2 usually touching) at 100 yards, my wife runs 64.5grs of RL-22 and CCI 250 primers behind 160gr Speer Grand Slams in her 7mm Rem Mag. Of course, for off and on practice 6 months out of the year, she runs a light-recoiling, reduced load of 23-24grs of SR 4759 (still with a CCI 250 primer) behind a Speer 130gr SP. She only steps up to the RL22 and Speer Grand Slam loads for hunting season.
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The only spot I have found them lately is on Gun broker and the cheapest were 500 Remington 9 1/2 M for 80 bucks with 40$ shipping. I guess that's a lot when I have thousands of standard LRP. I am going to try the reloading trading section and see if someone wants to do some trading.
.45Coltguy
Member
63.0-64.0gr H4831sc, 160gr Speer spitzer and Fed 215 primers worked well in my Mod 70 7mm RM.
redneck2
Member
Shot these in my Browning X-Bolt. I had loaded them for my 700 but sold it. If you can’t read it, they are Federal 215 Match primers, 62.0 of RL-22, WW cases, Berger Match bullets. I loaded them for 1,000 yard shots on prairie dogs.
Those are 1” squares
Those are 1” squares
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redneck2
Member
GooseGestapo
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- Joined
- Jan 6, 2003
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- 6,150
Just how big are your PRAIRIE DOGS ???? !
41 Mag
Member
My best load used the 162gr Hornady BTSP, RL-19, and the Fed 215GM.
" It's not how big the dog in the fight is, but how much fight is in the dog"
" It's not how big the dog in the fight is, but how much fight is in the dog"
redneck2
Member
Doesn’t matter how big. I’m ready
Actually I set this up before the days of Creedmoor and high B.C. 6mm’s. Those Berger Match and Hornady A -Max had the best B.C. of anything commonly available. The goal was a 1,000 kill
Varminterror
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- Jul 17, 2016
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- 14,893
Definitely. The 7mm RM was the popular colloquial recommendation ~30yrs ago (maybe farther back, but I became aware of it in the early ‘90s) for 1000yrd shooting and prairie dogging. I owned a 30-06 sporter at the time and was frustrated with the low weight and relatively low performance for 1000yrd shooting, so I was enticed to buy a Rem 700 Sendero in 7RM. It didn’t take long before I built an R700 in 7x57 for the task, same bullets, less powder, blast, and recoil, and naturally, today, I do the same task with an even smaller bullet in an even smaller cartridge. But I still do have an irrational, near-mystical regard for the 7RM.
This thread actually kinda reminds me, I have a NIB stainless 7RM Ruger Hawkeye in the safe which I simply don’t need, and with prices the way they are currently, I might need to send it on down the river.
But… I’m a fan of Retumbo first for 7RM, followed by H1000, with H100V a distant third, this for the 162-180 class bullets, I don’t really shoot the fast powders or light 140’s in 7RM any more - I’m much more interested in retaining downrange velocity than boosting short range velocity.
redneck2
Member
At the time I was trying to get my Sendero set up, RL-22 seemed to be the powder of choice for some reason I can’t remember. Don’t have pix of the groups from my Sendero, but I sold it to my best friend’s son and he gets sub 1/2” with match grade hand loads
the two pix above were the first two out of my 7. The three shot group was very first three shots, the second group shot during a sleet/snow event with a moderately stiff crosswind. I only had a light windbreaker and was shivering badly by the time I was done.
the two pix above were the first two out of my 7. The three shot group was very first three shots, the second group shot during a sleet/snow event with a moderately stiff crosswind. I only had a light windbreaker and was shivering badly by the time I was done.
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