55's gotta be faster than a Saturday night drag strip
-
If you are being asked to change your password, and unsure how to do it, follow these instructions. Click here
6 Dasher with light bullets and barrel length
- Thread starter abnorm
- Start date
Help Support Long Range Hunting Forum
That scope was just seemingly made for the dasher!
My reamer = .020 freebore; lapua brass, no neck turn
55g Nosler ballistic tips approaching 4200+
65g V max at 3800 fps
70g nosler ballistic tips at 3650+
14 twist barrel, 27" long- three groove X caliber, and three groove Lilja
to aid in throat life, I shoot AA2230(55 & 65g) and H335(70g) wtih Rem 7 1/2s
do not expect these velocities in 8T barrels with .120-.147 freebore; .236 bore
In the Dasher, if you run Varget, H4895 your barrel has seen the very best accuracy in 1100 rounds, and in 1400 rounds your barrel is toast with 105-108. Plan ahead.
55g Nosler ballistic tips approaching 4200+
65g V max at 3800 fps
70g nosler ballistic tips at 3650+
14 twist barrel, 27" long- three groove X caliber, and three groove Lilja
to aid in throat life, I shoot AA2230(55 & 65g) and H335(70g) wtih Rem 7 1/2s
do not expect these velocities in 8T barrels with .120-.147 freebore; .236 bore
In the Dasher, if you run Varget, H4895 your barrel has seen the very best accuracy in 1100 rounds, and in 1400 rounds your barrel is toast with 105-108. Plan ahead.
Last edited:
I'm on a 10 twist Lilja
87g V max in the 6 XC, add another 300-400 fps over the dasher velocities, worth building a rifle around.
.237 bore, NOT .236
.237 bore, NOT .236
Last edited:
BALLISTICJESUS
Well-Known Member
I have no clue what barrel you are using. My Bartlein 1-7.5 twist Dasher has over 1700 rounds on it with 108's @ 2911 and I'm still shooting 5 shot groups at 300 yards that average .750/3/4" inch.
This is the only photo I could find with a round count written on the target. I checked my 300 yard zero real quick, for coyotes. Note on the target I have over 1600 rounds on the barrel when I shot this off a spartan bipod and rear bag.
My last Bartlein 1-8 twist 6.5 Creedmoor barrel went over 2600 round before I started getting odd flyers that would open groups above 1/2 MOA. Shooting Berger 135's over H4350 @ 2841.
I can measure throat dia and throat growth length. In 1400 rounds of H4895, the dia of the throat had grown .0022 in dia and the barrel looked like a sewer pipe. The barrel was no longer competitive at all. Odd things started showing up around 1100 rounds but still would shoot great from time to time. Between 1100-1400 rounds, oddball shots would go out of the group.
Krieger barrel.
It is well known that my experience is normal among competitors. For Killing animals, the barrel was still good, and this barrel would shoot well till you started shooting five, 5 shot groups in a row where the bore wear would show its ugly head. I cut 9" off the barrel where the bore diameter is .2370, But the dia is .2360 at the muzzle(.001 bore wear) I will get one more chamber on the barrel as a Deer/hog barrel.
AA2700 and Win 760 in the Dasher with the 108s would add to the barrel life, tremendously, and H4350 would be much better than H4895 in terms of barrel life.
Krieger barrel.
It is well known that my experience is normal among competitors. For Killing animals, the barrel was still good, and this barrel would shoot well till you started shooting five, 5 shot groups in a row where the bore wear would show its ugly head. I cut 9" off the barrel where the bore diameter is .2370, But the dia is .2360 at the muzzle(.001 bore wear) I will get one more chamber on the barrel as a Deer/hog barrel.
AA2700 and Win 760 in the Dasher with the 108s would add to the barrel life, tremendously, and H4350 would be much better than H4895 in terms of barrel life.
BALLISTICJESUS
Well-Known Member
In my experience a light fast bullet out of the same chambering will torch 
a throat way faster than heavies at lower velocities. I learned this with a 6.5-338 Ultra Mag Improved. A160gr Matrix VLD @ 3460. At 209 rounds the fun was over. I was running US869 after inspection of the barrel, two thirds way down the barrel the rifling was gone on the muzzle end. This was a polygonal barrel. That's why I got great speed and accuracy but it was also the reason for its short lived term.
a throat way faster than heavies at lower velocities. I learned this with a 6.5-338 Ultra Mag Improved. A160gr Matrix VLD @ 3460. At 209 rounds the fun was over. I was running US869 after inspection of the barrel, two thirds way down the barrel the rifling was gone on the muzzle end. This was a polygonal barrel. That's why I got great speed and accuracy but it was also the reason for its short lived term.Idaho Lefty
Well-Known Member
- Joined
- Jan 29, 2018
- Messages
- 1,785
YUP,. This ^^^
The 6 XC with Norma or, Peterson Brass ( NO silly, Neck Turning or, Fire forming ) using Forster Dies, IS the "EASY Button" for, a LR, Coyote / Varmint rifle as, feeds like Butter, in Short actions.
The little XC Kills, WAY out there with, 87 gr. H-VLD's, V-Maxes, 95 gr Classic Hunters up to, the 103 ELD-X's / 108 gr. Elite Hunters !
And using, "Cool burning" Powders like, N-150 or, N-160 will get you,.. LONG Barrel Life !
Wind Bucking, High BC bullets are BEST for, the Cold open, Windy, Desert country that, I Hunt in.
Last edited:
Where abouts in Canada are you? I'm in Alberta and i know of a couple smiths that could help you out with the switch to dbm if you'd like. I'm going to be going with the mdt mags and their bottom metal with adjustable mag catch to make sure i can get it to feed properly
I'm in Manitoba. It's a hunting gun so I'd like a basically flush mag like the Hawkins. I did talk to HS Precision but they don't offer anything for the Dasher. I sure wish they did, because their mag system is a straight bolt in on a a BDL. I'll never order another stock without the M5 inlet.
The Heat Index of the powder used has a tremendous effect on the barrel life. Light fast bullets shot with varget will eat a barrel faster than Varget used with heavier bullets due to the amount of a High Heat Index powder used. Now if you change to a lower Heat index powder, you are playing a different ball game.
8000 rounds of H335 with 60g Sierra Hp in a 6 BR still shooting groups in the high 2's is normal with a 14T and a zero freebore chamber. If you were to change powder to H322, then around 3000 rounds, your throat and the first 6-8" of the bore is well worn, very hot burning powder with a high heat index. If you were to change to Varget or H4895, throat wear would be even worse.
I used to shoot 2000 rounds of 6 BR and 6 PPC per p. dog trip. We verified throat wear, adjusted seating depth, usually had to add a tad more powder, and just kept getting tiny groups. H335 and AA2230 are very easy on throats.
The Dasner and BRX with short freebore and slow twists usually get 6000 rounds before the light bullet can not touch the lands, but best to set them back before they get worn too badly. Match the new throat dia with the dia at the muzzle for a super accurate set back job.
8000 rounds of H335 with 60g Sierra Hp in a 6 BR still shooting groups in the high 2's is normal with a 14T and a zero freebore chamber. If you were to change powder to H322, then around 3000 rounds, your throat and the first 6-8" of the bore is well worn, very hot burning powder with a high heat index. If you were to change to Varget or H4895, throat wear would be even worse.
I used to shoot 2000 rounds of 6 BR and 6 PPC per p. dog trip. We verified throat wear, adjusted seating depth, usually had to add a tad more powder, and just kept getting tiny groups. H335 and AA2230 are very easy on throats.
The Dasner and BRX with short freebore and slow twists usually get 6000 rounds before the light bullet can not touch the lands, but best to set them back before they get worn too badly. Match the new throat dia with the dia at the muzzle for a super accurate set back job.
