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  #11  
Old 09-12-2020, 04:11 PM
Dean2 Dean2 is offline
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Quote:
Originally Posted by gundog View Post
40 grain V Max in .17 cal? Something I don't know about?
Typo, I meant 20 grain. I also use benchmark in the 25 grain. 8208 I find too slow for the lighter bullets. Good accuracy but no near the same velocity, All 3 of my FBs shoot their best groups at the very top loads.

JWHIP - I don't recall how far off the lands but the 30 grains are a a COAL of 1.860, at 1.750 the groups almost double.

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  #12  
Old 09-12-2020, 08:33 PM
Jwhip Jwhip is offline
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Quote:
Originally Posted by Dean2 View Post
Typo, I meant 20 grain. I also use benchmark in the 25 grain. 8208 I find too slow for the lighter bullets. Good accuracy but no near the same velocity, All 3 of my FBs shoot their best groups at the very top loads.

JWHIP - I don't recall how far off the lands but the 30 grains are a a COAL of 1.860, at 1.750 the groups almost double.

Wow that’s a good looking group! Thanks for sharing!
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  #13  
Old 09-13-2020, 12:19 AM
20VarTarg 20VarTarg is offline
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I got into the 17 game earlier this year. I have a 17/23 SMC. Basically an improved version of the 17 FB. I have pushed loads up to 4200+ FPS with mediocre accuracy. I found a sweet spot with Benchmark and the 20 grain Varmegeddon running right at 3850 FPS. The accuracy was so good I left it alone. A groundhog doesn't know the difference between the 3850 or 4200 FPS. I have since built a 17 Squirrel. Depending upon what your plans are with the 17 FB you may want to look into a Squirrel or a Mink. Use lots less powder. I'm still testing the Squirrel and I'm getting 3250 FPS out of it with crazy accuracy. 7.5 grains of 296. It's very efficient. You can load a lot of rounds with a pound of powder. And it's extremely fun making brass. BTW, I now have a barrel on order chambered in 20 MINK.
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  #14  
Old 09-13-2020, 07:09 AM
Dean2 Dean2 is offline
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Quote:
Originally Posted by Jwhip View Post
Wow that’s a good looking group! Thanks for sharing!
Thanks. the target squares are 1/2" on a side so even a group well under a half inch a two hundred yards doesn't look that great, the little 17 calibre bullets leave a lot of room between unless you manage to put them all in the same hole.
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  #15  
Old 09-13-2020, 07:15 AM
Jwhip Jwhip is offline
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Quote:
Originally Posted by 20VarTarg View Post
I got into the 17 game earlier this year. I have a 17/23 SMC. Basically an improved version of the 17 FB. I have pushed loads up to 4200+ FPS with mediocre accuracy. I found a sweet spot with Benchmark and the 20 grain Varmegeddon running right at 3850 FPS. The accuracy was so good I left it alone. A groundhog doesn't know the difference between the 3850 or 4200 FPS. I have since built a 17 Squirrel. Depending upon what your plans are with the 17 FB you may want to look into a Squirrel or a Mink. Use lots less powder. I'm still testing the Squirrel and I'm getting 3250 FPS out of it with crazy accuracy. 7.5 grains of 296. It's very efficient. You can load a lot of rounds with a pound of powder. And it's extremely fun making brass. BTW, I now have a barrel on order chambered in 20 MINK.
I’m not a speed demon so I appreciate the velocities in the 3800s I’m only pushing 3750 in my 20 Prac. I prefer accuracy over velocity most of the time. I’ll look into the Squirrel. Thanks!
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  #16  
Old 09-13-2020, 01:55 PM
Bayou City Boy Bayou City Boy is offline
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Accuracy always trumps velocity.

No matter what cartridge you are using, large or small, if maximum velocity is the primary concern, the shooter will likely spend a lot of time missing what he's shooting at versus using a load that is slower but far more accurate.

-BCB
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  #17  
Old 09-17-2020, 11:11 PM
toomb toomb is offline
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I have a 17 fireball built on a CZ action. 9 twist. I shoot 25 grain v max, and it prefers Benchmark as well.
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  #18  
Old 09-19-2020, 05:00 PM
charlesasmith charlesasmith is offline
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Default 17MIV loads

I found that H335 worked well, but I kept my velocity at 3750. Benchmark is about the same for burning rate. I was never able to get better than 1/2" groups with 3 or 4 touching and 1 out of the group. My reloading techniques have improved and I might get slightly better results at this time. If I used Lapua brass rather than Remington, I would go to a higher velocity.

From reading loading posts, it seems that necking down cartridges to smaller calibers results in going to slower powders and less volume compared to the parent case. I found this to be true when loading for my 20P.

Chuck
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  #19  
Old 09-20-2020, 09:38 AM
sshcoyote sshcoyote is offline
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I have an XP-100 17" 9T Shilen-barrelled setup that shoots the 25 V-Max into about an inch or so at 225 yds. I think I'm netting 3400 mv out of it. At work now have to check later. Was my favorite go-to coyote handgun until I got a 20 BR XP built.
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  #20  
Old 09-21-2020, 10:27 AM
17VLD 17VLD is offline
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Default Steve is that ....

The same 20BR that was giving you trouble?Did you build another one perhaps?
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