Factory 204 12-twist

[ray h]

Doug that's a pair. I've had some great hunts with them. Too bad Rem left us way too soon.

[Hippy]

Originally Posted by Glenn Arner

Might be a speed thing. 32 grains will get the velocity over 4200 in factory loaded. Bragging rights for highest speed, etc. Mrgs think shooting public will just be using the 32 grain bullets to get greatest speed so 1 in 12

just a thought

This is exactly what the Hornady people had in mind the 32 Grain @ 4200 -I have mentioned previously I have owned 2 Remington XR-100 the 1st
would shoot both 39 & 40's so close that you would have to measure the groups to tell the winner. #2 shoots the 39's very well BUT the 40 V-Max shoots groups twice as big.

Does anyone shoot the 32's in a 11 twist and get velocity @ 4200?

Jim

[Bill K]

Originally Posted by GrocMax

The 39BK is slightly shorter than the 40 vmax. Possibly there's a difference in polymer tip length as well, could make all the difference in the world in sea level atmo in a 12 twist. Above 2000-3000 ft elevation they should come closer to being fully stabilized in a 12 twist.

I am at 5100 ft and shoot in the area of 4000-5400 ft. I can assure the 40 did not work, as well as the 39 grainers, when I had the 1-12 twist. All my 20's now sport 1-11 and work just fine, with all the bullet weights, we normally shoot in the 20's, including the 204 ruger. Bill K

[410gauge]

Gary, to add to the discussion...no one has brought up the comparison of button and cut rifled barrel twist. Lilja even made some comments about it, and he makes button rifled barrels. Cut-rifled barrels "usually" are pretty uniform in twist rates. What you ask for...one usually gets. Both methods can produce excellent barrels, but button rifled barrels need to have constant and consistent pressure through the barrel making process to achieve "exacting" twist standards. In other words in some cases a 12-twist button rifled barrel "could" be slightly off one way or the other. This would "somewhat" explain why some barrels will shoot the 40 gr V-Max and some won't. I too have had a button rifled barrel in 204 R that wouldn't shoot the 40 gr V-Max, but would shoot the 39 gr Sierra BK. Just my .02 worth (which ain't worth much). 410gauge

[moorepower]

Perhaps if the rifles actually all really had 1-12 twist it would not be an issue. Most Savage and Ruger barrels will shoot the 40 grain VMax very well. I don't disagree that I would have went 1-11, but I also remember an article by I believe Lane Simpson who had issues with the 32 and 39BK's turning to dust if he pushed them too hard. I went with a 1-11 in my .20 Practical and a 1-10 in my .204, and am happy with both choices. I am guessing that they did not want to chance bullets blowing up, and all of their test barrels shot well with the 1-12 twist.

[redrock ranger]

Does anyone have experience with a 20 Practical,11 twist and 50 gr bullets ? Mine is pleasingly accurate with 40 nosler BT and 39 Sierra BK. Curious if i could move up to the 50gr and stabilize them.

Thanks

[montdoug]

Originally Posted by ray h

Doug that's a pair. I've had some great hunts with them. Too bad Rem left us way too soon.

You were here too Ray, remember whizzing down the p-dog hole and looking down to see a rattlesnake getting it right in the face .
You're dang sure right about Rem. This look familiar? A lot of .20 caliber projectiles were sent down range on that trip, even with the snow and whatnot .



Matt, you shot from the exact spot that Gary and Rem were shooting in those pics above only you got a lot better weather, another real fond memory! I remember you getting a bit spooked when I pinned that little rattler down with my boot to grab him and take him away from the gate, your eyes looked like saucers ole Friend . Beau-coups buzz-tails up that way what with all the p-dog towns and such.
Hi-Jack over.

[410gauge]

redrock ranger...I guess it wouldn't hurt to try, but my experience a couple of years ago with a 11-twist Kreiger in a 223WSSM case necked down to 20 caliber...was not good. I recall it shot groups around 3/4" at a 100 yds with the 50 gr Bergers. It shot the 39 gr Sierra's very well...hi 1's..low 2's. The 55 gr Berger's were a disaster...all over the map. 410gauge

[Ratbuster]

Originally Posted by redrock ranger

Does anyone have experience with a 20 Practical,11 twist and 50 gr bullets ? Mine is pleasingly accurate with 40 nosler BT and 39 Sierra BK. Curious if i could move up to the 50gr and stabilize them.

Thanks

A 20 cal shooting 50 grain (depending on bullet shape) would likely stabilize best at 9 twist. I believe Berger recommends 7 twist for their 55 grain 20 pill

[Ratbuster]

Originally Posted by Hippy

This is exactly what the Hornady people had in mind the 32 Grain @ 4200 -I have mentioned previously I have owned 2 Remington XR-100 the 1st
would shoot both 39 & 40's so close that you would have to measure the groups to tell the winner. #2 shoots the 39's very well BUT the 40 V-Max shoots groups twice as big.

Does anyone shoot the 32's in a 11 twist and get velocity @ 4200?

Jim

A 20 Practical/Tactical can often do 4200 with a hot load. The 204R a bit more comfortably. I shot 5 shots at 4450 fos with 32 vmax. The load was decidedly over pressurized and in fact on the last shot the primer popped out. Don't try that at home.