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Shooting & Reloading - Mausers, Big Bores and others >> Lee Speed Forum & Archive

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BillfromOregon
.333 member

Reged: 27/10/04
Posts: 254
Loc: Sweetwater, by God Texas

Barrel twist rate, .375 Flanged NE 2 1/2?
#278692 - 02/03/16 06:21 AM

Wondering what the twist rate was in the original BSA Lee sporters. Can anyone help?

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50Calshtr
.300 member

Reged: 01/11/05
Posts: 119
Loc: Southeast Georgia

Re: Barrel twist rate, .375 Flanged NE 2 1/2? [Re: BillfromOregon]
#279038 - 10/03/16 01:55 AM

Bill,
Not a BSA but a C&H 1893 Dutch, I'm getting 1 in 8.5". I'd think the BSA would be similar.
Best

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BillfromOregon
.333 member

Reged: 27/10/04
Posts: 254
Loc: Sweetwater, by God Texas

Re: Barrel twist rate, .375 Flanged NE 2 1/2? [Re: 50Calshtr]
#279101 - 11/03/16 08:12 AM

That's for a .375? Most I have seen are 12 or slower.

Edited by BillfromOregon (11/03/16 08:18 AM)

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50Calshtr
.300 member

Reged: 01/11/05
Posts: 119
Loc: Southeast Georgia

Re: Barrel twist rate, .375 Flanged NE 2 1/2? [Re: BillfromOregon]
#279211 - 13/03/16 09:00 AM

Bill,
Correct, a 375 2.5, proofs on the barrel are 40 Gr cordite and 270 Gr bullet. It shoots well for me, old eyes considered, with both cast and jacketed.

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BillfromOregon
.333 member

Reged: 27/10/04
Posts: 254
Loc: Sweetwater, by God Texas

Re: Barrel twist rate, .375 Flanged NE 2 1/2? [Re: 50Calshtr]
#279263 - 14/03/16 06:52 AM

Well I'll be darned!

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FrankS
.300 member

Reged: 06/10/08
Posts: 114
Loc: New Iberia Louisiana

Re: Barrel twist rate, .375 Flanged NE 2 1/2? [Re: BillfromOregon]
#279606 - 20/03/16 07:07 PM

My Husky 98 mauser in 9.3x57lobs a 286 grain softpoint at approx 2050 feet per second. I believe the 375 flanged nitro express 2 1/2 shoots the 270 grain bullet a roughly 1900 feet per second and my husky has a 1x14 twist. And I believe that the 9.3x57 does this at 40K pressure. Frank

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Old_rifle_nut
.300 member

Reged: 13/12/06
Posts: 100
Loc: Manitoba, Canada

Re: Barrel twist rate, .375 Flanged NE 2 1/2? [Re: FrankS]
#286977 - 26/08/16 02:40 AM

Not a Lee Speed, but my J. Burrow Farquharson in .375 2 1/2" Fl. has a 1:16" left-hand twist, 7 groove, Engield rifling.

It shoots a 265 gr. 0.97" RNFPGC water-quenched w/w bullet (45.0 gr. RL-15) to point of aim;
old 300 gr. Hornady RNSP about 4-5" low; and a
335 gr. cast bullet (old Lyman mould) about 12" low.
All at 50 yds. using the 50 yd. fixed leaf.

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