Allen Precision Shooting Wildcats
Faster, Flatter and Farther then ever before.
In 2004, The dream of having my own line of wildcats popped into my head. I had been working with many wildcats up to this point to perform specific big game hunting uses but always felt there was more to be had. This adventure started when I drew up the first reamer prints for my 257 Allen Magnum and 6.5 Allen Magnum wildcats. Both based on the 338 RUM parent case. Ordered reamers and custom dies and within a few months I had built my very first rifle chambered for my own design.
From that moment on, a passion for designing, testing and developing my own wildcat designs was born. Those two first wildcat designs started a journey that would continue to this day and result in over 30 unique wildcat designs with over 20 available in my fulll custom rifles to the public.
More to come from all of these families of Wildcats!!
Northern Sask. Canada whitetail
Allen Magnum and Maximus Wildcat Families
The Allen Magnum family of wildcats is my original family of wildcats specifically designed to be the ultimate big game hunting wildcats. They are the very top in performance, trajectory and terminal performance in their caliber class. Which is where my motto "Faster, Farther and Flatter than ever before" started. Designed from the ground up to be the most potent yet practical and functional extreme performance wildcats on the market. Over the years a couple Maximus wildcats were added to this family taking things to an even higher level of extreme!! If the most potent big game chamberings in their caliber class is wanted, the Allen Magnum and Maximus wildcats should be your first choice!!
510 Allen Magnum
7mm Allen Magnum
7mm Allen Magnum
7mm Allen Magnum
Left to Right: 338 Lapua, 7mm AM w/ 168 gr Barnes LRX, 7mm AM w/ 195 gr Berger EH
The 7mm Allen Magnum was released in the summer of 2005 and was designed from the ground up as the ultimate open country North American big game cartridge.
Parent Case: 338 Lapua Mag (Peterson brand recommended)
Best powders:
Hodgdon US-869
RL-33
Recommended bullet weights
Performance (27" and 30" barrels)
168 gr Barnes LRX 3500-3600 fps
180 gr Berger Hybrid 3325-3425 fps
195 gr Berger EH 3300-3400 fps
Recommended usages:
Open Country Light to Medium Big Game Hunting. Ideally suited for game up to 800 lbs and under out to 1200 yards
The 7mm Allen Magnum is available for chambering in the Raptor LRSS, Stalker and Prowler line of APS rifles.
338 Allen Magnum
7mm Allen Magnum
7mm Allen Magnum
Left to Right: 338 Lapua, 338 AM w/ 265 gr Barnes LRX, 338 AM w/ 300 gr Berger OTM
The 338 Allen Magnum was released in the spring of 2006 and was designed to the highest performing 338 magnum offered at that time. To this day it is one of the most potent 338s ever released.
Parent Case: 375 or 408 cheytac (Peterson Brand)
Recommended Powders:
Hodgdon H-50BMG
RL-50
Hodgdon US-869
VV 20N29
Recommended bullet weights
Performance (32"-36" barrels)
265 gr Barnes LRX 3450-3550 fps
280 gr Barned LRX 3400-3500 fps
300 gr Berger OTM 3300-3400 fps
Recommended Usages:
Extreme range Steel shooting
Extreme range big game hunting
The 338 Allen Magnum is only available chambered in the XHS rifle platform
375 Allen Magnum
7mm Allen Magnum
375 Allen Magnum
Left to Right: 338 Lapua, 375 AM w/ 350 gr SMK, 375 AM w/ 375 gr CE Lazer
The 375 Allen Magnum was released in early 2008 and at the time about the only 375 cal projectile suitable for long range shooting was the 350 gr Sierra MK. The 375 AM proved capable of driving very heavy bullets to very good velocities as well as offering 25% longer barrel life then the 338 AM.
Parent Case: 408 Cheytac (Peterson Brand)
Recommended Powders:
Retumbo (300 and 350 gr projos)
RL-33
H-50BMG
Recommended bullet weights
Performance (32" and 36")
350 gr Sierra MK 3300-3400 fps
375 gr CE Lazer 3200-3300 fps
400 gr CE Lazer 3100-3175 fps
Recommended usages:
The 375 AM is ideally suited for extreme range shooting with its relatively long barrel life and current offerings of extreme range projectiles.
The 375 Allen Magnum is only available in the APS XHS rifle platform
510 Allen Magnum
510 Allen Magnum
375 Allen Magnum
Left to Right: 7mm AM, 50 BMG, 510 AM with 750 gr AMax, 510 Maximus w/ 750 gr AMax
The 510 Allen Magnum was released in the spring of 2010 and was an attempt to add Performance to the standard 50 BMG. This is a simple improved version of the 50 BMG meaning these rifles can safely fire standard 50 BMG ammunition. It has enjoyed a steady order life over the past 15 years.
Parent Case: 50 BMG (RWS brand)
Best Powders:
Hodgdon H-50BMG
RL-50
VV 20N29
Recommended bullet weights
Performance (33" and 36")
650 gr Lehigh 3100-3150 fps
750 gr AMaxx 2950-3000 fps
815 gr Lehigh 2850-2900 fps
Recommended usages:
designed for extreme range target competition or big game hunting where legal.
510 Allen Magnum can only be chambered in APS HEAVY BR rifles.
458 Maximus
510 Allen Magnum
458 Maximus
Left to Right: 338 Lapua, 458 Maximus w/ 800 gr Hammer Match
The 458 Maximus wildcat was an evolution of designs released in 2016 based on a full length 50 BMG case. This was an attempt to design a wildcat that would offer legit supersonic velocity to a range of at least 4000 yards. This wildcat is successful at this goal.
Parent Case: 50 BMG (Peterson Brand)
Best Powders:
Hodgdon H-50BMG
RL-50
Hodgdon US-869
VV 20N29
Recommended bullet weights
Performance (35' to 45" barrel)
650 gr Hammer 3100-3200 fps
700 gr Hammer 3050-3175 fps
740 gr Hammer 3100 fps 45"
800 gr Hammer 2970 fps 45"
Recommended usages:
extreme range target shooting
2 mile class shooting
The 458 Maximus is only available in single shot versions of the APS Heavy BR rifles
510 Maximus
510 Allen Magnum
458 Maximus
Left to Right: 338 Lapua, 510 Maximus
The 510 Maximus was released in early 2012 and designed to get the absolute maximum case capacity out of the 50 BMG case. To get this the case shoulder is moved dramatically farther forward then the standard 50 BMG. As such, 50 BMG ammunition is not safe to fire in 510 Maximus rifles.
Parent Case: 50 BMG (RWS Brand)
Best Powders:
Hodgdon H-50BMG
RL-50
Hodgdon US-869
VV 20N29
Recommended bullet weights
Performance (35" to 45")
750 gr AMaxx 3050-3150 fps
815 gr Lehigh 2950-3050 fps
Recommended usages:
extreme range target shooting
The 510 Maximus is only available in single shot versions of the APS Heavy BR rifles
Allen Xpress Wildcat Family
The Allen Xpress family of wildcats were designed to offer a level of performance just slightly less than the Allen Magnums in each respective caliber but still matching or exceding the top performance offered by anything else out there at the time. Still holds true for most to this day. These are extremely flexible, practical, extreme performance wildcat chamberings which as as easy to load for as any commercially available chambering on the market. For any big game hunting use out there, the Allen Xpress wildcat family will easily cover all your needs in the field.
338 Allen Xpress cartridges
300 Allen Xpress
300 Allen Xpress
300 Allen Xpress
Left to Right: 338 Lapua, 300 AX w/ 200 gr LRX, 300 AX w/ 245 gr Berger EH
The 300 Allen Xpress was released in 2007 and designed to be a powerful, Jack of all trades type rifle. Combining ballistic performance just shy of the 7mm AM and terminal performance just shy of the 338 AX. It has been a do all powerhouse for nearly 20 years.
Parent Case: 338 Lapua Magnum (Peterson brand)
Recommended Powders:
Hodgdon Retumbo
Ramshot Magnum
RL-33
Recommended bullet weights
Performance (26" to 30" barrel)
180 gr Accubond 3400-3550 fps
200 gr LRX 3275-3400 fps
215 gr Berger Hybrid 3170-3300 fps
230 gr Berger OTM 3120-3250 fps
245 gr Berger OTM 3070-3200 fps
Recommended usages:
Big Game Hunting
Long to Extreme Range target shooting
The 300 Allen Xpress is available in the Raptor LRSS, Stalker and Prowler rifle models
338 Allen Xpress
300 Allen Xpress
300 Allen Xpress
Left to Right: 338 Lapua, 338 AX w/ 265 gr LRX, 338 AX w/ 300 gr Berger EH
The 338 Allen Xpress has been the most popular wildcat chambering since it was released in 2008. This is likely because of its extreme versatility. The ability to safely shoot factory 338 lapua ammo is a great feature. The 338 AX can be used on anything from Pronghorns to Moose and large Bears with ease.
Parent Case: 338 Lapua Magnum (Peterson brand)
Recommended Powders:
Ramshot Big Game
Ramshot Magnum
Hodgdon Retumbo
RL-25
RL-26
Recommended bullet weights:
Performance (26" to 30" barrel)
250 gr Accubond 3250-3325 fps
265 gr LRX 3125-3200 fps
300 gr Berger EH 2950-3075 fps
Recommended usages:
Big Game Hunting
Long to Extreme range target shooting
The 338 Allen Xpress is available in the Raptor LRSS, Stalker rifle models
375 Allen Xpress
300 Allen Xpress
375 Allen Xpress
Left to Right: 338 Lapua, 375 AX w/ 350 gr TSX, 375 AX w/375 gr CE Lazer
The 375 Allen Xpress was released in 2009 and was the last of the three APS wildcats based on the 338 Lapua parent case. Originally designed for a dedicated Heavy and Dangerous game round, it has also found extended use as a long range precision Big game and target round with the new crop of high BC 375 cal projectiles.
Parent Case: 338 Lapua Magnum (Peterson brand)
Recommended Powders:
Hodgdon H-4350
Hodgdon H-4831
Ramshot Hunter
Ramshot Big Game
Hodgdon Retumbo
Recommended bullet weights:
Performance (26" to 30")
300 gr Accubond 2975-3100 fps
350 gr TSX 2800-2900 fps
375 gr CE Lazer 2850-2950 fps
Recommended usages
Large to Heavy Big Game Hunting
Long to Extreme Range Target Shooting
The 375 Allen Xpress is available in the Raptor LRSS and Stalker rifle models
Stalker Wildcat Family
The Stalker Family of wildcats was designed in 2019-2020 specifically to replace my original 257, 6.5 and 27 Allen Magnum wildcats which were based on the very hard to find 338 RUM parent case. I wanted a stronger, higher quaity parent case which would allow me to meet or exceed the performance of my old Allen Magnum wildcats but do so simply in a more user friendly design. The relatively new at that time 300 Norma Magnum case was the perfect platform to build my Stalker wildcats around. These new Stalker wildcats matched the performance of my old 257, 6.5mm and 270 Allen Magnum wildcats performance in 30" barrels while the Stalkers only needed 27" to reach this level of performance. Specifically designed to be used on my Stalker line of rifles for use on light to medium big game and any practical ranges. They can also be chambered in my Raptor LRSS and Prowler line of rifles as well. I have been extremely happy with the track record the Stalker wildcats have earned in this relatively short period of time. While smaller in caliber, they make up for it in hyper performance that is very user friendly.
26 Stalker w/ 156 gr Berger
25 Stalker
25 Stalker
25 Stalker
Left to Right: 25-06, 25 Stalker w/ 101 gr LRX, 25 Stalker 135 gr Berger Hybrid
The 25 Stalker wildcat was released in 2019 as a replacement for the old 257 Allen Magnum. This was to offer a design using available brass of much higher quality to match or exceed the performance of the old AM wildcat. For those speed freaks out there, the 25 Stalker is the ultimate in big game hunting speed.
Parent Case: 300 Norma Magnum (Peterson Brand)
Best Powders:
Ramshot LRT
Hodgdon US-869
Recommended bullet weights:
Performance (26" to 30" barrels)
101 gr Barnes LRX 4000-4120 fps
110 gr Accubond 3900-4020 fps
135 gr Berger Hybrid 3750-3875 fps
Recommended usages:
Light to Medium Big Game Hunting
The 25 Stalker is available for chambering in the APS Raptor LRSS, Stalker and Prowler line of rifles
26 Stalker
25 Stalker
25 Stalker
Left to Right: 25-06, 26 Stalker w/ 127 gr LRX, 26 Stalker w/ 156 gr Berger EH
The 26 Stalker was released in 2019 to replace the old 6.5mm Allen Magnum. The 26 Stalker can offer the hyper velocity of the 25 Stalker but also offer long ranging ability of driving the 156 gr Berger EH to very high speeds making it an extremely flexible light to medium game chambering with hyper performance.
Parent Case: 300 Norma Magnum (Peterson Brand)
Best Powders:
Ramshot LRT
Hodgdon US-869
Recommended bullet weights:
Performance (26" to 30" barrels)
100 gr TTSX 4050-4150 fps
127 gr LRX 3700-3825 fps
140 gr Berger 3475-3550 fps
156 gr Berger EH 3400-3525 fps
Recommended usages:
Light to Medium Big Game hunting
The 26 Stalker is available in the APS Raptor LRSS, Stalker and Prowler line of rifles.
27 Stalker
25 Stalker
27 Stalker
Left to Right: 25-06, 27 Stalker w/ 155 gr LRX, 27 Stalker w/ 170 gr Berger EH
The 27 Stalker was the last of the original three Stalker wildcats released in 2019 to replace the old 270 Allen Magnum wildcat with a more modern design using a much stronger case design to match or exceed the performance of the old 270 AM. The 27 Stalker achieves this with ease.
Parent Case: 300 Norma Magnum (Peterson Brand)
Best Powders:
Ramshot Magnum
Hodgdon Retumbo
Hodgdon US-869
Recommended bullet weights:
Performance (26" to 30" barrels)
129 gr Barnes LRX 3700-3825 fps
140 gr Accubond 3500-3625 fps
155 gr Barnes LRX 3575-3650 fps
170 gr Berger EH 3425-3550 fps
Recommended Usages:
Light to Medium Big Game Hunting
The 27 Stalker is available in the APS Raptor LRSS, Stalker and Prowler line of rifles.
Raptor Family
My Raptor family of wildcats has a rather interesting and long history from design concept to reality. Spanning many years of a long journey. They were designed hand in hand with my Raptor receiver and designed to be the ultimate level of performance and power that could be housed in a Remington 700 class clone receiver, specifically, my Raptor LRSS rifles. while the road to reality was long and filled with tough lessons learned, the end result was that they meet this design goal VERY WELL!!! Not a choice for every use or every shooter but when they are approriate for the work at hand, they have few peers in any catagory!! Basically the case is the same diameter as a 338 Lapua Magnum but stretched to be slightly longer then the 408 cheytac case. Offering the most capacity of any chambering that will fit into the Remington 700 class sized receivers. Because of the extreme length of the Raptor ammunition, only Raptor LRSS rifles in single shot form can chamber these rounds.
Left to Right: 338 Lapua, 300 Raptor w/ 245 gr, 338 Raptor w/ 300 gr , 375 Raptor w/ 375 gr Lazer
300 Raptor
300 Raptor
300 Raptor
Left to Right: 338 Lapua, 300 Raptor w/ 245 gr Berger EH
The 300 Raptor started in theory over 15 years back but did not come to reality until 2019. Designed to be the ultimate in performance and power being able to be housed in a Remington 700 class clone receiver (Raptor LRSS).
Parent Case: 33XC (Peterson Brand)
Best Powders:
RL-50
Hodgdon US-869
VV 20N29
Recommended bullet weights:
Performance (30" to 34" barrels)
230 gr Berger Hybrid 3325-3450 fps
245 gr Berger Hybrid 3275-3400 fps
Recommended Usages:
Medium to Large big game hunting at long to extreme ranges.
The 300 Raptor is only available in the Raptor LRSS rifle platform in single shot only.
338 Raptor
300 Raptor
300 Raptor
Left to Right: 338 Lapua, 338 Raptor w/ 300 gr Berger OTM
The 338 Raptor is one of a trio of wildcats released in 2019, designed to obtain the most power and performance in the Remington 700 class clone receivers (Raptor LRSS). The 338 Raptor effectively splits the difference in performance between the 338 AX and huge 338 AM wildcat.
Parent Case: 33XC (Peterson Brand)
Best Powders:
RL-33
RL-50
Hodgdon H-50BMG
Hodgdon US-869
Recommended bullet weights:
Performance (30" to 34" barrels)
265 gr Barnes LRX 3300-3400 fps
280 gr Barnes LRX 3200-3300 fps
300 gr Berger OTM 3150-3250 fps
Recommended Usages:
Medium to Large Big Game hunting at long to extreme ranges.
Long and extreme range target shooting
The 338 Raptor is only available in single shot versions of the Raptor LRSS rifles.
375 Raptor
300 Raptor
375 Raptor
Left to Right: 338 Lapua, 375 Raptor w/ 375 gr CE Lazer
The 375 Raptor is the last in a trio of wildcats released in 2019. Designed specifically to offer the most power and precision in a Remington 700 class clone receiver (Raptor LRSS). The 375 Raptor is ideally suited to long range big and heavy big game hunting as well as an excellent extreme range target rifle with its very respectable throat life.
Parent case: 33XC (Peterson Brand)
Best Powders:
Hodgdon Retumbo
Ramshot Magnum
RL-33
Recommended bullet weights:
Performance (30"-34" barrels)
350 gr Sierra MK 3100-3200 fps
375 gr CE Lazer 3000-3125 fps
400 gr CE Lazer 2900-3025 fps
Recommended Usages:
Large to Heavy Big Game hunting at long to extreme range.
Long and Extreme range Target shooting.
The 375 Raptor is only available in the single shot version of the Raptor LRSS rifle.
Prowler Wildcats
My Prowler family of wildcats is the newest family and still in R&D phases for some of its members. These were designed to offer a very practical, less intensive wildcat for those that do not need the very large, very high-performance wildcats. Those wanting a good performance wildcat that they can shoot at a higher volume level of shooting. So far, they are performing this function very well.
The Prowler family of wildcats is based on the 6.5 PRC parent case. The family includes the 24, 25, 26, 27 and 28 Prowler. The parent case is modified to the same shoulder and case body taper design as the Stalker wildcat cartridges, just a scaled down version.
Specifically intended to be chambered in the new APS Prowler rifle line, they can also be ordered in the Stalker and Raptor LRSS line of rifles.
The Prowler line of wildcats will focus on efficency and precision combined with good performance levels while offering very long barrel throat life.
Several of the Prowler cartridges are currently in the testing stage at the time of this release so stay tuned for updates on this line of APS wildcats.
Left to Right: 243 Win, 25 Prowler, 26 Prowler, 27 Prowler and 28 Prowler