Sherman 7 MAX

[BCX]

I haven’t played w the Berger 180. I would think they would run good w RL-26 in a 22 inch tube. Give Rich Sherman a call.

 

[Schw15]

BCX do you think the sherman 7 max is worth it over the saum? Thinking about trying a max for pva 170 grain hunting bullets. I think the saum could get 3000 feet long action 26 inch barrel.

 

[BCX]

I think there is a gain in velocity. Rich now has ADG 7 MAX brass w 40 degree shoulder but i did have to full length size them. Either way your loading for both cartridges. Im a fan of the 40 degree shoulder. Hate trimming lol.

 

[BCX]

7 MAX brass may be easier to find also.

 

[Schw15]

Yeah talked to him he has the sherman max brass blown out ready to go. So makes it way easier. How mich difference are you gaining over saum?

 

[BCX]

I have only played w the Berger 190 and Hornady 190 A-Tip. 190 A-Tip is 3030 FPS max, Accuracy load is 3k. Im not sure how fast Steel Head pushed the 190 A-Tip in the SAUM?

Don't forget i added FB and loading at 3.200 on a LA

 

[Schw15]

I have only played w the Berger 190 and Hornady 190 A-Tip. 190 A-Tip is 3030 FPS max, Accuracy load is 3k. Im not sure how fast Steel Head pushed the 190 A-Tip in the SAUM?

Don't forget i added FB and loading at 3.200 on a LA

Sherman said his reamer was .205 freebore so should be good for those 170 and run them in a long action nuke

 

[BCX]

I think w his reamer your at the lands around 3.070 vs the 3.210-3.225 I'm running for heavies.

 

[Schw15]

I cant remember what my buddie over length was with the 197 smk. I will ask

 

[BCX]

New ADG 7 max brass gave me 3050 FPS w N570 190 A-Tip. I will weigh the old vs the new brass and compare H20 capacity.

 

[Schw15]

New ADG 7 max brass gave me 3050 FPS w N570 190 A-Tip. I will weigh the old vs the new brass and compare H20 capacity.

How does the new brass look?

 

[BCX]

Wouldn't chamber by neck sizing only, had to FL size to get it to chamber. Other than that looks good.

 

[Schw15]

Wouldn't chamber by neck sizing only, had to FL size to get it to chamber. Other than that looks good.

Um i wonder why that is? But its better than fire forming

 

[BCX]

Idk, i contacted Rich about the brass and my chamber out of spec. I purchased a fresh reamer from Rich for the chamber job. Personally i would rather fire form 200 pieces of ADG 7 SAUM. I had no issues w that brass.

 

[Schw15]

Idk, i contacted Rich about the brass and my chamber out of spec. I purchased a fresh reamer from Rich for the chamber job. Personally i would rather fire form 200 pieces of ADG 7 SAUM. I had no issues w that brass.

Did you chamber it your self? Hopefully that brass holds up well. Kind of have me scared i havent pulled trigger yet everything is in cart still. Deciding on what prefit to get

 

[BCX]

No, i did not chamber it. Its not a chamber issue. Fire formed brass is perfect.

 

[Schw15]

No, i did not chamber it. Its not a chamber issue. Fire formed brass is perfect.

What is barrel life looking like?

 

[BCX]

IDK yet less than 250 rounds on barrel, throat looks good. I would says it should run near a 7 SAUM for life.

 

[Schw15]

IDK yet less than 250 rounds on barrel, throat looks good. I would says it should run near a 7 SAUM for life.

Nice thank you for the info

 

[Steel head]

What is barrel life looking like?

IDK yet less than 250 rounds on barrel, throat looks good. I would says it should run near a 7 SAUM for life.

My last 7 saum barrel went 1900 but I chased speed for the last 400.
I can’t say I was nice to it.

 

[Schw15]

My last 7 saum barrel went 1900 but I chased speed for the last 400.
I can’t say I was nice to it.

That is pretty good 1900. And your saum is 200 feet behind the max. Bcx is 3050 your at 2850?

 

[BCX]

3050 was max w new brass. That same charge weight ran 3003 average w fire formed brass.

 

[Steel head]

That is pretty good 1900. And your saum is 200 feet behind the max. Bcx is 3050 your at 2850?

I can safely run them at 2930 but I get a better ES at my current 2880.

 

[BCX]

Your running the Berger 190 still? I couldn't get the speed or accuracy i wanted. I moved on to the 190 A-Tips. Still need to take them out to 1k than a mile.

 

[Steel head]

Your running the Berger 190 still? I couldn't get the speed or accuracy i wanted. I moved on to the 190 A-Tips. Still need to take them out to 1k than a mile.

Yes.
They’ve been good to me.

Set a lot of personal best distances with them in 2020.

 

[Schw15]

I can safely run them at 2930 but I get a better ES at my current 2880.

Great speed. H1000? Or what powder

 

[Steel head]

R26.

 

[Schw15]

R26.

Unicorn dust lol great for speed

 

[Steel head]

Unicorn dust lol great for speed

Lol
I thankfully saw this disaster coming
I have lots of R26, N565 and some N570

 

[Schw15]

Yeah i stocked up on what i could imr 8133 and imr 7977

 

[Steel head]

Yeah i stocked up on what i could imr 8133 and imr 7977

Good stuff both.

 

[Schw15]

Ive used the 8133 alot with great luck. Alittle slow on speeds and havent used the 7977 yet waiting on my 25 prc

 

[Steel head]

Ive used the 8133 alot with great luck. Alittle slow on speeds and havent used the 7977 yet waiting on my 25 prc

I found with 7977 I needed just a tad more than H100 to get the same speed.

 

[BCX]

Have my eye on something up and coming!!! Sherman 338 Striker, off a shortened CT case. Case is 2.464 w OAL 3.940 W 285 BADLANDS.

 

[BCX]

Should out run my 338 LM AI. Specs should be out in a few weeks.

 

[Steel head]

Have my eye on something up and coming!!! Sherman 338 Striker, off a shortened CT case. Case is 2.464 w OAL 3.940 W 285 BADLANDS.

Looks interesting.

 

[Schw15]

I found with 7977 I needed just a tad more than H100 to get the same speed.

Yeah i like these new powders and at one time easier to get

 

[Schw15]

Have my eye on something up and coming!!! Sherman 338 Striker, off a shortened CT case. Case is 2.464 w OAL 3.940 W 285 BADLANDS.

Very interesting

 

[Tchitcherine]

What dies are everybody using? I see Hornady Match 2 die set for 7 Max on the Sherman www site. Are there other, better options?

 

[Schw15]

What dies are everybody using? I see Hornady Match 2 die set for 7 Max on the Sherman www site. Are there other, better options?

I have the 7 max hornady dies. I dont mind them i think forster dies are better but not offered. I had to send my 7 max resizing die back to hornady to get polished because it was scratching my cases but just got it back and works great now.

 

[Schw15]

I just got my 7 max up and running virgin brass new barrel imr 7977 66 grains was 2950. 28 inch barrel hoping it speeds up with barrel and brass get 3000 but going to try 66.5 and 67 grains next. 183 smk

 

[hereinaz]

I just got my 7 max up and running virgin brass new barrel imr 7977 66 grains was 2950. 28 inch barrel hoping it speeds up with barrel and brass get 3000 but going to try 66.5 and 67 grains next. 183 smk

I would think you can get those going faster than 3,000 feet per second, my 7 SS hits 3000 feet per second with 60.5 grains of reloader 26 and a 180 vld.

 

[Schw15]

I would think you can get those going faster than 3,000 feet per second, my 7 SS hits 3000 feet per second with 60.5 grains of reloader 26 and a 180 vld.

Rl26 is a special powder haha and it is like magic dust to get. But yeah i was hoping for 3050 at least. But i havent reached pressure yet so hoping 67 grains gets me there.

 

[Schw15]

I think i got lucky with a slow barrel im prolly going to finish at 2900 to 2930 for speed with the 183 smk. Going to finish up testing tomorrow. Imr 7977 65 grains max and imr 8133 66.5 to 67 grains

 

[BCX]

How many rounds down the tube? Has the barrel sped up? I think guys run the 183 in 7 SAUM around 2900 FPS loaded long.

 

[Schw15]

How many rounds down the tube? Has the barrel sped up? I think guys run the 183 in 7 SAUM around 2900 FPS loaded long.

I have to check count 100 %, off top of my head almost 100 rds now. Yeah my 7 saum was 2850 plus. Thats why i went max but not getting any where close to that. My oal is 3.245 on 183 smk

 

[BCX]

Are you at JAM?

 

[Schw15]

I tried a few loads. Some at the lands and now im 20 off. They shoot pretty good just no speed

 

[Schw15]

183 is my target load later in a few weeks going to load up some 170 pva hunting bullets to see what they do i hope at least 3000 feet

 

[BCX]

Maybe give N570, RL-33,RL-26 a try? Your running 28 inch? Try a slower powder. I shot some 195 w N570 yesterday evening. Will post some velocity readings this weekend.