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Enhance precision with our 338 Caliber Stainless Steel Expander Mandrel 🔧. Perfect for neck turning tools and easy case sizing!

SINCLAIR INTERNATIONAL STAINLESS STEEL EXPANDER MANDRELS - SINCLAIR INTERNATIONAL 338 CALIBER (.337") STAINLESS EXPANDER MANDREL

749001158

Variations:

SINCLAIR INTERNATIONAL 338 CALIBER (.337") STAINLESS EXPANDER MANDREL
16.9 GBP 22 £16.90 *
In stock
Caliber: 338 Caliber Diameter (in): 0.337 Product no.: 749001158
In stock
16.9 GBP 22 £16.90 *
SINCLAIR INTERNATIONAL 6.5MM (.263") STAINLESS EXPANDER MANDREL
18.9 GBP 38 £18.90 *
In stock
Caliber: 6.5mm, 264 Caliber Diameter (in): 0.263 Product no.: 749001179
In stock
18.9 GBP 38 £18.90 *
SINCLAIR INTERNATIONAL 17 CALIBER (.171") STAINLESS EXPANDER MANDREL
16.9 GBP 21 £16.90 *
In stock
Caliber: 17 Caliber Diameter (in): 0.171 Product no.: 749001145
In stock
16.9 GBP 21 £16.90 *
SINCLAIR INTERNATIONAL 25 CALIBER (.256") STAINLESS EXPANDER MANDREL
16.9 GBP 12 £16.90 *
In stock
Caliber: 25 Caliber Diameter (in): 0.256 Product no.: 749001161
In stock
16.9 GBP 12 £16.90 *
SINCLAIR INTERNATIONAL 20 CALIBER (.203") STAINLESS EXPANDER MANDREL
16.9 GBP 6 £16.90 *
In stock
Caliber: 20 Caliber Diameter (in): 0.203 Product no.: 749001164
In stock
16.9 GBP 6 £16.90 *
SINCLAIR INTERNATIONAL 270 CALIBER (.276") STAINLESS EXPANDER MANDREL
16.9 GBP 2 £16.90 *
In stock
Caliber: 270 Caliber, 6.8mm Diameter (in): 0.276 Product no.: 749001165
In stock
16.9 GBP 2 £16.90 *
SINCLAIR INTERNATIONAL 7MM (.283") STAINLESS EXPANDER MANDREL
16.9 GBP 19 £16.90 *
In stock
Caliber: 284 Caliber, 7mm Diameter (in): 0.283 Product no.: 749001176
In stock
16.9 GBP 19 £16.90 *
SINCLAIR INTERNATIONAL 6MM (.242") STAINLESS EXPANDER MANDREL
16.9 GBP 17 £16.90 *
In stock
Caliber: 243 Caliber, 6mm Diameter (in): 0.242 Product no.: 749001182
In stock
16.9 GBP 17 £16.90 *
SINCLAIR INTERNATIONAL 30 CALIBER (.307") STAINLESS EXPANDER MANDREL
16.9 GBP 63 £16.90 *
In stock
Caliber: 30 Caliber Diameter (in): 0.307 Product no.: 749001183
In stock
16.9 GBP 63 £16.90 *
SINCLAIR INTERNATIONAL 22 CALIBER (.223") STAINLESS EXPANDER MANDREL
18.9 GBP 59 £18.90 *
In stock
Caliber: 22 Caliber Diameter (in): 0.223 Product no.: 749001187
In stock
18.9 GBP 59 £18.90 *
SINCLAIR INTERNATIONAL 8MM (.322") STAINLESS EXPANDER MANDREL
16.9 GBP 7 £16.90 *
In stock
Caliber: 8mm, 32 Caliber Diameter (in): 0.322 Product no.: 749011523
In stock
16.9 GBP 7 £16.90 *
16.9 18.9 11 GBP
16.9 GBP £16.90

Prices inclusive of duty & VAT.

Product no.: 749001158

Mfr. No.: E33

Our neck turning tool mandrels are made from high grade stainless steel on Precision turning centers. The shape, finish, and size are the result of years of use and experimentation by many hand loaders. All of our mandrels fit both our NT-3000 and NT-1000 neck turning tools and most of our older model neck turning tools. Our neck turning tool mandrels measure approximately about .002"" less than the bullet diameter for the caliber. Our expander mandrels are made .001"" larger than the turning mandrels. Using an expander mandrel prior to neck turning sizes the case to fit the neck turning mandrels perfectly. This correct fit makes the turning process more precise and much easier. Any of the mandrels can be used to ""neck"" cases up to the next caliber when used with the NT-EXP (Expander Body).
In stock

Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse

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Delivery time approx. 7-14 days.
More than 10 pieces in USA warehouse

Variations:

SINCLAIR INTERNATIONAL 338 CALIBER (.337") STAINLESS EXPANDER MANDREL
16.9 GBP 22 £16.90 *
In stock
Caliber: 338 Caliber Diameter (in): 0.337 Product no.: 749001158
In stock
16.9 GBP 22 £16.90 *
SINCLAIR INTERNATIONAL 6.5MM (.263") STAINLESS EXPANDER MANDREL
18.9 GBP 38 £18.90 *
In stock
Caliber: 6.5mm, 264 Caliber Diameter (in): 0.263 Product no.: 749001179
In stock
18.9 GBP 38 £18.90 *
SINCLAIR INTERNATIONAL 17 CALIBER (.171") STAINLESS EXPANDER MANDREL
16.9 GBP 21 £16.90 *
In stock
Caliber: 17 Caliber Diameter (in): 0.171 Product no.: 749001145
In stock
16.9 GBP 21 £16.90 *
SINCLAIR INTERNATIONAL 25 CALIBER (.256") STAINLESS EXPANDER MANDREL
16.9 GBP 12 £16.90 *
In stock
Caliber: 25 Caliber Diameter (in): 0.256 Product no.: 749001161
In stock
16.9 GBP 12 £16.90 *
SINCLAIR INTERNATIONAL 20 CALIBER (.203") STAINLESS EXPANDER MANDREL
16.9 GBP 6 £16.90 *
In stock
Caliber: 20 Caliber Diameter (in): 0.203 Product no.: 749001164
In stock
16.9 GBP 6 £16.90 *
SINCLAIR INTERNATIONAL 270 CALIBER (.276") STAINLESS EXPANDER MANDREL
16.9 GBP 2 £16.90 *
In stock
Caliber: 270 Caliber, 6.8mm Diameter (in): 0.276 Product no.: 749001165
In stock
16.9 GBP 2 £16.90 *
SINCLAIR INTERNATIONAL 7MM (.283") STAINLESS EXPANDER MANDREL
16.9 GBP 19 £16.90 *
In stock
Caliber: 284 Caliber, 7mm Diameter (in): 0.283 Product no.: 749001176
In stock
16.9 GBP 19 £16.90 *
SINCLAIR INTERNATIONAL 6MM (.242") STAINLESS EXPANDER MANDREL
16.9 GBP 17 £16.90 *
In stock
Caliber: 243 Caliber, 6mm Diameter (in): 0.242 Product no.: 749001182
In stock
16.9 GBP 17 £16.90 *
SINCLAIR INTERNATIONAL 30 CALIBER (.307") STAINLESS EXPANDER MANDREL
16.9 GBP 63 £16.90 *
In stock
Caliber: 30 Caliber Diameter (in): 0.307 Product no.: 749001183
In stock
16.9 GBP 63 £16.90 *
SINCLAIR INTERNATIONAL 22 CALIBER (.223") STAINLESS EXPANDER MANDREL
18.9 GBP 59 £18.90 *
In stock
Caliber: 22 Caliber Diameter (in): 0.223 Product no.: 749001187
In stock
18.9 GBP 59 £18.90 *
SINCLAIR INTERNATIONAL 8MM (.322") STAINLESS EXPANDER MANDREL
16.9 GBP 7 £16.90 *
In stock
Caliber: 8mm, 32 Caliber Diameter (in): 0.322 Product no.: 749011523
In stock
16.9 GBP 7 £16.90 *

Description:

Our neck turning tool mandrels are made from high grade stainless steel on Precision turning centers. The shape, finish, and size are the result of years of use and experimentation by many hand loaders. All of our mandrels fit both our NT-3000 and NT-1000 neck turning tools and most of our older model neck turning tools. Our neck turning tool mandrels measure approximately about .002"" less than the bullet diameter for the caliber. Our expander mandrels are made .001"" larger than the turning mandrels. Using an expander mandrel prior to neck turning sizes the case to fit the neck turning mandrels perfectly. This correct fit makes the turning process more precise and much easier. Any of the mandrels can be used to ""neck"" cases up to the next caliber when used with the NT-EXP (Expander Body).

Top takeaways

  1. The mandrels are crafted from high-grade stainless steel, ensuring durability and precision for hand loaders.
  2. They are designed to be compatible with both NT-3000 and NT-1000 neck turning tools, as well as most older models.
  3. Using the expander mandrel before neck turning optimizes the fit for the neck turning mandrels, enhancing the precision and ease of the turning process.

Attributes

  • Caliber: 338 Caliber
  • Diameter (in): 0.337
  • Delivery weight: 0.032kg
  • Shipping height: 10mm
  • Shipping width: 13mm
  • Shipping length: 58mm

Item details

Made in USA

Customers reviews

Customer ratings (3)

3.7 / 5
Recommended

Brownells USA Need for lube ! 30/08/2016

Works OK… if one complies w/ the ABSOLUTE need for lubing either the mandrel (?) or inside the case neck. Do consider groups WILL BE larger because 1) CBTO is not consistent and 2) not being consistent, pressures may increase due to change (.0.002±) brought about by neck tension variation(s) w/ NEW brass. In the end, 100 rounds fired to reach "perfection" of CBTO. So why use the Gen-II set up ?

Definitely recommended

Brownells USA Works Great 19/02/2016

Works very well. Very smooth.

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