09-25-2021, 02:16 AM
Yes I picked up the Grand slams as well & been shooting them a bit this week. Tonight I put one through a series of 5 water jugs, that is the bullet was caught the 5th jug at just a bit shy of 100 yards.
This bullet was leaving the muzzle at a velocity of 2869. the retained weight of the slug was 74.1 grains. better than any cup and core bullet I have tried thus far.. Good though I still think I may do well to just go with a GMX or a ttsx if bullet retention is what I am after.
Now for a bit of unpleasant experience with the 100 gr Grand slam. The bullets turned out, to be a few tenths of a thousanth tapered with the base measuring .2428 and .2426 near the cannelur. What I am experiencing is the base is resizing the neck and the tension ends up being a bit less than desired when the bullet is fully seated. I am able to press the bullet deeper with my fingers and no tools.
The whidden dies that I am working with allow a switch out of a bushing to alter the Neck sizing up or down as needed. Well I reduced the neck diameter by .001 with little improvement. The same was experienced when reducing the neck another thousands.
Spoke with a service person with Speer and was left with little comfort in knowing the bullet was made within there specifications. Nevermind I have loaded many other 6mm bullets for this cartridge with no such issues. Guess I failed to share my displeasure with there premium bullet in this respect.
As for the Fusions, a number of us did come across the fusions as a pulled bullet from american reloading. They were only available for a short while. As a pulled bullet I have to say they do shoot quite well in terms of accuracy. As for weight retention Ill need to put at least one through a test yet.
This bullet was leaving the muzzle at a velocity of 2869. the retained weight of the slug was 74.1 grains. better than any cup and core bullet I have tried thus far.. Good though I still think I may do well to just go with a GMX or a ttsx if bullet retention is what I am after.
Now for a bit of unpleasant experience with the 100 gr Grand slam. The bullets turned out, to be a few tenths of a thousanth tapered with the base measuring .2428 and .2426 near the cannelur. What I am experiencing is the base is resizing the neck and the tension ends up being a bit less than desired when the bullet is fully seated. I am able to press the bullet deeper with my fingers and no tools.
The whidden dies that I am working with allow a switch out of a bushing to alter the Neck sizing up or down as needed. Well I reduced the neck diameter by .001 with little improvement. The same was experienced when reducing the neck another thousands.
Spoke with a service person with Speer and was left with little comfort in knowing the bullet was made within there specifications. Nevermind I have loaded many other 6mm bullets for this cartridge with no such issues. Guess I failed to share my displeasure with there premium bullet in this respect.
As for the Fusions, a number of us did come across the fusions as a pulled bullet from american reloading. They were only available for a short while. As a pulled bullet I have to say they do shoot quite well in terms of accuracy. As for weight retention Ill need to put at least one through a test yet.