SS30378 likes to experiment like a lot of handloaders and shooters like myself.
Not long ago he contacted me about this idea/project he had in mind.
Ream a 9mm conversion barrel for G20 to 38 Casull, which we refer to as the 38 Weatherby now because of its Weatherby
style shoulder.
![Image]()
He sent me his LWD long slide , 6" 9mm barrel now reamed to 38/45 along with a set of dies.
After reaming/headspacing barrel I loaded a couple of test loads using power pistol . These loads were not hot at all and would not cycle the slide but showed very impressive accuracy at 25 yds.
Did some load development today using Win. 296 powder under 125 xtp's.
With absolutely no load data (that I could find) I started low and worked up as one should always do!
With a case capacity somewhat close to 357 mag I some idea of where to start.
I worked up to 20.5 gr of 296 for a velocity of 1876 fps/977 ft lb load.
The muzzle rise of this load is more than a comparable load in a revolver mainly because of the lighter Glock platform.
Will also be machining a muzzle brake for this barrel in very near future to help with muzzle rise and for the heavier bullets Steve will be shooting from his 38 WBY.
I would be willing to bet this is the only such Glock in existence for now.... I may build one for myself.
Dies are not on dealer shelves and at a premium price from RCBS custom shop. If I have time I may machine my own just to have the fastest (for now) caliber Glock !
90 gr or lighter bullets would give a Glock rifle velocity and trajectory for a varmint rig.
![Image]()
Not long ago he contacted me about this idea/project he had in mind.
Ream a 9mm conversion barrel for G20 to 38 Casull, which we refer to as the 38 Weatherby now because of its Weatherby
style shoulder.
He sent me his LWD long slide , 6" 9mm barrel now reamed to 38/45 along with a set of dies.
After reaming/headspacing barrel I loaded a couple of test loads using power pistol . These loads were not hot at all and would not cycle the slide but showed very impressive accuracy at 25 yds.
Did some load development today using Win. 296 powder under 125 xtp's.
With absolutely no load data (that I could find) I started low and worked up as one should always do!
With a case capacity somewhat close to 357 mag I some idea of where to start.
I worked up to 20.5 gr of 296 for a velocity of 1876 fps/977 ft lb load.
The muzzle rise of this load is more than a comparable load in a revolver mainly because of the lighter Glock platform.
Will also be machining a muzzle brake for this barrel in very near future to help with muzzle rise and for the heavier bullets Steve will be shooting from his 38 WBY.
I would be willing to bet this is the only such Glock in existence for now.... I may build one for myself.
Dies are not on dealer shelves and at a premium price from RCBS custom shop. If I have time I may machine my own just to have the fastest (for now) caliber Glock !
90 gr or lighter bullets would give a Glock rifle velocity and trajectory for a varmint rig.
