INTRODUCTIONAL HEADING OF HTI XPR, XLPR, XXLPR
DATA SHEET #SHOTSHOW2025 new products !
eXtreme Precision Rifles
ACCURACY 1/8 MOA
Like every year on Valentine's Day, February 14th, the reputable Milanes company HTI.CENTER presents its new models. The most accurate 1/8moa and precision shooting rifles in the world demonstrated themselves during the Industry Day at ShotShow24 in Las Vegas on January 22nd.
Produced in ITALY with all "Valtrompini’s" materials and components, they won the Queen of the Mile 2024. Proof of the very high quality of the work of Val Trompia and the Milanes engineering of HTI.CENTER. From the CONTESSA attacks mounting to the MOLLIFICIO BRESCIA springs, all of Boulder City spoke Brescian language.
HTI.CENTER rifles are produced in three sizes: XPR (small action), XLPR (long action), XXLPR (magnum). Made to last over time, they are characterized by numerous patents and designs that protect the first non-action rifles. In fact, the bolts closes directly into the barrel, which is made in a single piece, in perfect and solid continuous harmony along its entire length. Internally coated with 9/10 nitral-ox to withstand heavy use, over 22,000 shots.
The adjustable snaps in all their variations are hardened and PVD coated for absolute smoothness, they "release like Bohemian crystal", always in the same point and with the same pressure, adjustable. They are factory supplied with three interchangeable triggers depending on the shooter's taste.
The Mil Spec Std cases and forends made of 7075-T6 coated with type III class 2 hard anodization, also available with with ARCA system, remain unchanged. Multi-caliber obviously because within their scope they can vary caliber, with the simple replacement of the barrel (30sec) or even the bolt body when changing the case back of a different caliber. Obviously, downgrading is possible on lower calibers, not the other way around. Aics or Barrett market magazines complete the modularity of the HTI.CENTER weapons in order to let the shooter choose any and all possible "tuning". Out of the box, as they say, the rifles are supplied with original MDT stocks, with various accessories on request.
In short, the best of Italian technology that made the USA fall in love with it.
With XPR, XLPR and XXLPR bolt actions, HTI offers a sniper rifle system specially developed for long range 1/8 MOA average accuracy, multi-caliber. The bolt-action rifle sets a milestone in ergonomics and modularity. The weapon can be adjusted to the shooter’s needs and the situation without tools.A modern precision rifle that combines high functionality with impressive precision. Sporting,police and military use, mil specs standards.The production process behind the system complies with industry standard ISO9001:2015 and NATO AC225 standards. 22,000 rounds guarantee for Nitral-Ox barrels warranty. Safety3 stages firing pin safety.
PR is multi-caliber rifle for mini actions i.e. up to 223R caliber.
XPR is multi-caliber rifle for short actions i.e. up to 308W caliber.
XLPR is multi-caliber rifle for long actions i.e. up to .338LM caliber.
XXLPR is multi-caliber rifle for magnum actions i.e. up to 30 mm caliber.
PR
Calibers indicative 6ARC / 6DASHER / 6BR / 6GT / 6CM / 5,56X45 (.223Rem) others POR
Overall length 1120 mm (with folded buttstock: 830 mm)
Width 28 mm (with folded buttstock: 68 mm)
Height 100 mm (without scope)
Barrel length 17" / 24" / 28" / 32" or CUSTOM
Barrel OD 29 mm
Weight approx. 4,45 kg
Trigger 5–20 N (adjustable single and double stage trigger; adjustable in length, pull and weight)
Magazine capacity 5 / 10 rounds
Safety 3 stages firing pin safety
Colours available BLACK or OTHER COLORS P.O.R.
XPR
Calibers indicative 5,56X45 (.223Rem) / 7,62 x 51 mm (.308 Win.) / 6,5 Creedmoor others POR
Twist reccomanded as sample 1:9" (5,56X45 / .223Rem) - 1:10″ (7,62 x 51 mm / .308 Win.) - 1:8" (6,5 Creedmoor) ETC
Overall length 1120 mm (with folded buttstock: 830 mm)
Width 38 mm (with folded buttstock: 78 mm)
Height 100 mm (without scope)
Barrel length 17" / 24" / 28" / 32" or CUSTOM
Barrel OD 29 mm
Weight approx. 6,45 kg
Trigger 5–20 N (adjustable single and double stage trigger; adjustable in length, pull and weight)
Magazine capacity 5 / 10 rounds
Safety 3 stages firing pin safety
Colours available BLACK or OTHER COLORS P.O.R.
XLPR
Calibers indicative .338 Lapua Magnum/ .300PRC / 6,5 prc / 7mm PRC / others POR up to .375CT caliber.
Twist reccomanded as sample 1:9.3" (.338 Lapua Magnum) - 1:9″ (.300PRC) - 1:8.5" (.300NM) ETC
Overall length1275 mm (with folded buttstock: 1020 mm)
Width 40 mm (with folded buttstock: 80 mm)
Height 110 mm (without scope)
Barrel length 17" / 24" / 28" / 32" / 36" / 39" / 42" or CUSTOM
Barrel OD 31 mm
Weight approx. 9,65 kg
Trigger 5–20 N (adjustable single and double stage trigger; adjustable in length, pull and weight)
Magazine capacity 5 / 10 rounds
Safety 3 stages firing pin safety
Colours available BLACK or OTHER COLORS P.O.R.
XXLPR
Calibers indicative 416B and .50BMG / others POR
Twist reccomanded as sample 1:10" or 1:13" upon request
Overall length 1420 mm (with folded buttstock: 1232 mm)
Width 50 mm (with folded buttstock: 88 mm)
Height 120 mm (without scope)
Barrel length 28" / 32" / 36" / 39" / 42" / 45" / 49" / 55" or CUSTOM
Barrel OD 41 mm
Weightapprox. 11,85 kg
Trigger 5–20 N (adjustable single and double stage trigger; adjustable in length, pull and weight)
Magazine capacity 5 / 10 rounds
Safety 3 stages firing pin safety
Colours available BLACK or OTHER COLORS P.O.R.
HTI PR, XPR, XLPR AND ANTI-MATERIAL XXLPR RILES FEATURES
Safety Mil-Spec: Three position "safe" which does not allow the fire pin to fire and the action to open, "standing safe" which does not allow the fire pin to fire and fire.
Barrel: monoblock real barrel block, cold hammer forged 4140 chrome moly steel, available all lenghts from 4 to 12
grooves upon request, at same price.
Model: HTI BARREL BLOCK & BARREL LOCK WITH 3 LUGS milled inside the barrel, no barrel extension.
Type: Multi Caliber Bolt Action Precision Rifle, Steel, cold hammer forged, 3 locking lugs system,
Picatinny rail integral to the action.
Action: 3 lugs bolt milled inside the barrel without barrel extensions. 60DEG
Calibers : ALLS YOU NEED, UP TO 14.5x114 mm.
Barrel Length: up to 42 in (1 in = 2,54 cm).
Barrel diameter: OD41mm 1:15 available super heavy contour NAVY TARGET with the muzzle tread 1-14 TPI or M19.
Barrel spanner: Torque Wrench 10Nm included. Scope mount parts only 4Nm torsion force.
Hanguard: AL7075-T6 PICATINNY RAIL mod. 1913.
Trigger: Classic HTI98 multi adjustable in weight one or two stages upon request, same price, included.
Grip: HTI genuine or MDT P.O.R. May be configured with all AR-style grip.
Stock: HTI genuine or MDT P.O.R. May be configured with all AR-style buffer tube Mil-Spec 1 3/15"-16UN dia 1.185 in.
length of pull set to 14.5 inches.
DATABASE OF CASE HEAD & COAL
This next database showing the more precise diameters of the case heads of the difference cartridges, and the COAL (cartridge overall length) most common on those cartridges.
Caliber Case HeadCOAL
17 Rem.378″2.17″
17 Mach4.378″1.77″
204 Ruger.378″2.26″
22 RemJet.439″1.66″
22 Hornet.35″1.8″
22 KHornet.35″1.75″
22 Spitfire.356″1.65″
218 Bee.408″1.63″
218 Mashburn.408″1.63″
221 Fireball.378″1.84″
222 Rem.378″2.2″
222 RemMag.378″2.33″
223 Rem.378″2.3″
223 RemAI.378″2.3″
350 Legend.378″2.26″
220 Russian.441″2.07″
22 PPC.44″2.07″
.224 Valkyrie.422″2.26″
6.8mm Remington SPC.422″2.26″
219 Zipper.506″2.4″
22 BR.473″2″
225 Win473″2.43″
224 WeatherbyMag.43″2.38″
22-250 Rem.472″2.35″
22 XC.471″2.75″
22 Creedmoor .473″2.825″
22 GT.473″2.6″
220 Swift.473″2.7″
22×47 Lapua.473″2.795″
220 Redline.534″2.8″
224 Clark.473″3.08″
22 CheetahMkI.473″2.5″
223 WSSM.535″2.36″
22 SavHiPower.492″2.51″
6mm-223 Rem.378″2.26″
6mm PPC.441″2.19″
6mm ARC.441″2.26″
6mm BR.473″2.2″
6mm XC.471″2.75″
6mm GT .473″2.6″
6×47 Lapua.473″2.795″
6mm Creedmoor.473″2.825″
6mm Super LR.473″2.8″
6mm TCU.378″2.5″
6mm-284 Win.473″ (rebated)2.83″
243 Win.473″2.65″
6mm Rem.473″2.83″
240 WbyMag.473″3.08″
6.17 Spitfire.53″2.8″
243 WSSM.535″2.36″
240 Apex (BeltedNE).475″3.21″
256 WinMag.44″1.78″
25-21 Stevens.376″2.3″
25-25 Stevens.376″2.63″
25 Rem.421″2.53″
250 Sav.472″2.4″
257 Roberts.467″2.99″
25-’06 Rem.473″3.25″
25-284 Win.473″ (rebated)2.93″
257 WbyMag.53″3.3″
6.3 Scramjet.53″3.58″
6.5 Grendel.441″2.26″
6.5 Japanese.466″2.85″
6.5 Carcano.449″2.94″
6.5×54 Mann-Schoen.453″2.99″
6.5mm-257 Bob.467″2.75″
6.5×47 Lapua.473″2.795″
260 Rem.473″2.84″
6.5mm Creedmoor.473″2.825″
6.5mm GAP 4S (SAUM).534″2.85″
6.5 PRC.532″2.955″
6.5×55 Swede.476″3.03″
6.5mm-284 Win.473″ (rebated)2.95″
6.71 Phantom.53″2.8″
6.5mm-’06 A-Square.473″3.2″
6.5 RemMag.532″3.05″
264 WinMag.532″3.35″
26 Nosler.534″3.34″
270 Win.473″3.35″
270 WSM.535″2.86″
270 WbyMag.53″3.28″
270-08.473″2.8″
270 Redding.473″2.8″
270 Sig Fury.472″2.8″
7×33 Sako.394″1.73″
7mm TCU.378″2.68″
7mm BR.473″2.33″
7-30 Waters.506″2.55″
7mm-08 Rem.473″2.8″
7mm SAW.473″2.96″
.284 Shehane.473″2.96″
7mm SAW II.473″3.090″
7×57.473″3.02″
284 Win.473″(rebated)2.95″
7×64 Brenneke.473″3.3″
280 Rem.473″3.33″
7.21 Tomahawk.577″2.8″
7mm SAUM.534″2.84″
7mm WSM.535″2.86″
7mm RemMag.532″3.29″
7mm WbyMag.53″3.26″
7mm Practical.532″3.622″
7mm Mashburn.532″3.65″
7mm PRC.532″3.34″
28 Nosler.534″3.34″
7LRM (Long Range Magnum).532″3.43″
28 Sherman Magnum.532″3.7″
7mm STW.532″3.6″
7mm-300 WbyMag.532″3.72″
7mm RUM.534″3.6″
7.21 Firebird.577″3.6″
7mm Dakota.545″3.33″
28-30 Stevens.412″2.82″
7mm H&H.532″3.22″
7mm Rigby.528″3.25″
300 AAC Blackout.378″2.26″
300 Sherwood.37″2.2″
7.35 Carcano.449″2.9″
300 Whisper.378″2.26″
303 Sav.503″2.52″
300 Sav.473″2.6″
308 Win.473″2.8″
7.5×54 MAS.482″2.99″
7.5 Schmidt-Rubin.495″3.03″
30-’06 Springfield.473″3.34″
30 Gibbs.471″3.34″
300 SAUM.534″2.83″
7.82 Patriot.577″2.8″
300 WSM.535″2.86″
30-338 WinMag.532″3.34″
308 NormaMag.532″3.28″
300 H&H.532″3.65″
300 WinMag.532″3.34″
300 PRC.532″3.7″
30 Sherman Magnum.532″3.775″
300 WbyMag.53″3.56″
300 RUM.534″3.6″
300 Dakota.545″3.43″
7.82 Warbird.577″3.6″
30-378 WbyMag.603″3.67″
7.62×45 Czech.441″2.45″
7.62x39mm (AK47 Round).447″2.19″
303 Brit.525″3.08″
7.7mm Japanese.471″3.17″
7.65 ArgentineMauser.473″2.95″
310 Cadet.405″1.59″
8×57 Mauser.473″2.99″
8mm-’06 Spr.473″3.18″
8×60 S.473″3.1″
8×64 Brenneke.52″3.65″
8×64 Sauer.499″3.2″
8×68 SMag.524″3.4″
8mm RemMag.532″3.6″
318 WestleyRichards.465″3.35″
33 Jeffrey.534″3.45″
338 Federal.473″2.75″
8.6 BLK / 8.6 Creedmoor.473″2.825″
338-’06 A-Square.473″3.34″
8.59 Galaxy.577″2.8″
338 Win Mag.532″3.34″
340 Weatherby Magnum.53″3.68″
338 RUM.534″3.6″
338 Norma.588″3.60″
338 EDGE.534″3.80″
330 Dakota.545″3.33″
8.59 Titan.577″3.6″
338 Lapua Mag.588″3.68″
33XC.580″4.6″
338-378 WbyMag.603″3.76″
36 NitroExpress.48″2.98″
400-350 NE-Rigby.52″3.55″
350 RigbyMag.525″3.57″
35 Rem.46″2.51″
358 Win.473″2.78″
35 Whelen.473″3.26″
350 RemMag.532″2.93″
358 NormaMag.532″3.28″
37XC.580″4.8″
9.3×57 Mauser.469″3.23″
9.3×62 Mauser.473″3.29″
400-375 BeltedNE.466″3″
375 H&H.532″3.6″
375 Ruger.532″3.34″
376 Steyr.504″3.11″
375 WbyMag.53″3.69″
375 Rum.535″3.6″
375 Dakota.545″3.33″
378 WbyMag.603″3.65″
375 RimlessNE2-1/4.473″2.94″
10.15×61 Jarmann.615″3.06″
404 Basic.542″3.6″
416 Taylor.532″3.38″
416 RemMag.532″3.6″
10.57Meteor.577″3.62″
416 Dakota.545″3.65″
500-416 RimlessNE.59″3.91″
416 WbyMag.603″3.75″
416 Rigby.59″3.75″
404 Jeffreys.537″3.53″
10.75×68 Mauser.492″3.16″
425 WestleyRichards.467″3.3″
11.2×72 Schuler.536″3.85″
11.75×36 Montenegrin.555″1.73″
43 Mauser.586″3″
458 WinMag.532″3.3″
458 Lott.532″3.6″
450 Dakota.582″3.74″
460 WbyMag.603″3.71″
461 Gibbs.626″3.85″
470 Capstick.532″3.6″
50 Beowulf.445″2.24″
505 Gibbs.64″3.75″
500 Jeffrey.615″3.5″
50 BMG.804″5.45″
585 Nyati.66″3.53″
600-577 Rewa.66″3.7″
DATABASE OF BOLT FACES AND ACTIONS
This database of bolt face diameter chart, is of the Various cartridges that can work with the same bolt faces and action lengths. There are basically four main bolt face diameters and two action lengths that cover most cartridges, with just a few falling outside of those. Generally short-action would be suitable for cartridges with a COAL of 2.3 – 2.8 inches, long-action would be suitable for cartridges with a COAL of 2.8 – 3.34 inches and magnum-action would be suitable for cartridges with a COAL of 3.34 inches and longer.
Bolt Face Diameter (inches)CaliberAction Length
.318 +/-5.7×28Short Action
.384 +/-17 RemShort Action
.384 +/-204 RugerShort Action
.384 +/-222 RemShort Action
.384 +/-223 RemShort Action
.384 +/-350 LegendShort Action
.384 +/-20 NoslerShort Action
.384 +/-22 NoslerShort Action
.384 +/-24 NoslerShort Action
.384 +/-300 AAC BlackoutShort Action
.427 +/-224 ValkyrieShort Action
.427 +/-6.8mm Remington SPCShort Action
.445 +/-6mm PPCShort Action
.445 +/-6mm ARCShort Action
.445 +/-6.5 GrendelShort Action
.445 +/-7.62x39mmShort Action
.470 +/-220 SwiftShort Action
.470 +/-225 WinShort Action
.470 +/-22-250 RemShort Action
.470 +/-22 CreedmoorShort Action
.470 +/-22XCShort Action
.470 +/-22 GTShort Action
.470 +/-22×47 LapuaShort Action
.470 +/-243 WinShort Action
.470 +/-250 SavageShort Action
.470 +/-260 RemShort Action
.470 +/-6mm DasherShort Action
.470 +/-6mm Norma BRShort Action
.470 +/-6mm BRXShort Action
.470 +/-6mm BRAShort Action
.470 +/-6mm CreedmoorShort Action
.470 +/-6mm XCShort Action
.470 +/-6mm GTShort Action
.470 +/-6×47 LapuaShort Action
.470 +/-6mm Super LRShort Action
.470 +/-6mm-284Short Action
.470 +/-6.5/284 NormaShort Action
.470 +/-6.5mm CreedmoorShort Action
.470 +/-6.5×47 LapuaShort Action
.470 +/-7mm-08 RemShort Action
.470 +/-7mm SAWShort Action
.470 +/-270-08Short Action
.470 +/-270 ReddingShort Action
.470 +/-270 Sig FuryShort Action
.470 +/-284 winShort Action
.470 +/-300 SavageShort Action
.470 +/-308 WinShort Action
.470 +/-338 FederalShort Action
.470 +/-8.6 BlackoutShort Action
.470 +/-35 RemShort Action
.470 +/-358 WinchesterShort Action
.540+/-223 WSSMShort Action
.540+/-243 WSSMShort Action
.540+/-25 WSSMShort Action
.540+/-270 WSMShort Action
.540+/-6.5 x 300 WeatherbyShort Action
.540+/-6.5 PRCShort Action
.540+/-6.5mm GAP 4S (SAUM)Short Action*(See note below)
.540+/-7mm Rem saumShort Action
.540+/-7mm WSMShort Action
.540+/-300 Rem saumShort Action
.540+/-300 WSMShort Action
.540+/-325 WSMShort Action
.540+/-350 Rem MagShort Action
.470 +/-6mm RemLong Action
.470 +/-240 Weatherby MagLong Action
.470 +/-257 RobertsLong Action
.470 +/-25-06 RemLong Action
.470 +/-6.5×55 SwedishLong Action
.470 +/-6.5-06 A-SquareLong Action
.470 +/-270 WinLong Action
.470 +/-7×57 MauserLong Action
.470 +/-7×64 BrennekeLong Action
.470 +/-280 RemLong Action
.470 +/-30-06 SpringfieldLong Action
.470 +/-8mm MauserLong Action
.470 +/-338/06 A SquareLong Action
.470 +/-35 WhelenLong Action
.540 +/-257 WeatherbyLong Action
.540 +/-26 NoslerLong Action
.540 +/-264 Win MagLong Action
.540 +/-270 Weatherby MagLong Action
.540 +/-7mm Rem MagLong Action
.540 +/-7mm Weatherby MagLong Action
.540 +/-7 STWLong Action
.540 +/-7mm PRCLong Action
.540 +/-28 NoslerLong Action
.540 +/-28 Sherman MagnumLong Action
.540 +/-7LRM (Long Range Magnum)Long Action
.540 +/-7mm Rem Ultra MagLong Action
.540 +/-300 H & HLong Action
.540 +/-300 Win MagLong Action
.540 +/-300 PRCLong Action
.540 +/-30 Sherman MagnumLong Action
.540 +/-300 Weatherby MagLong Action
.540 +/-300 RUMLong Action
.540 +/-303 BritLong Action
.540 +/-8mm Rem MagLong Action
.540 +/-338 Win MagLong Action
.540 +/-338 EDGELong Action
.540 +/-340 Weatherby MagLong Action
.540 +/-338 RUMLong Action
.540 +/-375 H & HLong Action
.540 +/-375 WeatherbyLong Action
.540 +/-375 RUMLong Action
.540 +/-416 Rem MagLong Action
.540 +/-458 Win MagLong Action
.540 +/-458 LottLong Action
.585 +/-300 Norma MagLong Action
.585 +/-338 Norma MagLong Action
.585 +/-30/378 WeatherbyLong Action
.585 +/-338 LapuaLong Action
.585 +/-33XCLong Action
.585 +/-338/378 WeatherbyLong Action
.585 +/-378 Weatherby magLong Action
.585 +/-37XCLong Action
.585 +/-416 RigbyLong Action
.585 +/-416 Weatherby MagLong Action
.585 +/-460 Weatherby MagLong Action
.585 +/-470 Nitro ExpressLong Action
.670 +/-375 CheyTacMagnum Action
.670 +/-408 CheyTacMagnum Action
.670 +/-505 GibbsMagnum Action
.825 +/-416 Barrett
.825 +/-50BMG
THREAD PITCH GUIDE
The most common designation used for standard industrial bolts and nuts is Coarse Thread Series (UNC/UNRC). Because coarse thread fasteners are less likely to cross thread, they can be beneficial in applications where quick assembly is required.
When looking at more precise applications, Fine Thread Series (UNF/UNRF)fasteners are more commonly used. Fine thread fasteners have higher tension strength due to the larger tensile stress areas. However, fine thread applications require a longer engagement than coarse thread applications to ensure stripping does not occur.
