Hi all just a question, we can't boy .40 (.410) 400gr cast this side of the pond, so we have to cast our own. The rifles are Shilo Sharps creedmoors
All went well mastered the casting ok and got a lube machine so far so good. Rightly or wrongly also coated the bullets after lubing with Alox again worked it out heated the Alox in a mug of hot water to thin and then rolled the bullets in a bowl to coat all good so far.
As our only source of cast had stopped due to ill health, we had to role our own as above. All bullets looked and measured good. Lead-tin came from Brownells and we added Antimony by volume to duplicate Lyman no 2 mix or so we thought.
The first 3 or 4 shot great 1" or under at 100yds (rifles have repro scopes) then things would go to hell in a hand basket, all over the place. As this was both rifles and they shot great at first leading was the suspect. Next came a lead tester, the one you put the bullet in and wind down. Yes our mixture was too soft by a mile, ok add more Antimony and test till right.
Now down to the problem 50 rounds loaded with the soft stuff. I then had a bright idea pull the bullets with a collet puller swap bullets job done. No bullets not moving, ok use a bullet hammer to start them moving then use the collet puller.
I have used a bullet hammer on the 40-65 many times on neck sized cases no problem. These were new cases expanded just enough to seat the bullets then finishes with a taper crimp. 5 good smacks the break them loose then pull.
This load chronographs at 1400 fps good for range work. The WORRY is what would this have done to pressure ? Was it as I suspect the Alox was too tacky when first loaded ? Help and advice required please, thanks Gareth
All went well mastered the casting ok and got a lube machine so far so good. Rightly or wrongly also coated the bullets after lubing with Alox again worked it out heated the Alox in a mug of hot water to thin and then rolled the bullets in a bowl to coat all good so far.
As our only source of cast had stopped due to ill health, we had to role our own as above. All bullets looked and measured good. Lead-tin came from Brownells and we added Antimony by volume to duplicate Lyman no 2 mix or so we thought.
The first 3 or 4 shot great 1" or under at 100yds (rifles have repro scopes) then things would go to hell in a hand basket, all over the place. As this was both rifles and they shot great at first leading was the suspect. Next came a lead tester, the one you put the bullet in and wind down. Yes our mixture was too soft by a mile, ok add more Antimony and test till right.
Now down to the problem 50 rounds loaded with the soft stuff. I then had a bright idea pull the bullets with a collet puller swap bullets job done. No bullets not moving, ok use a bullet hammer to start them moving then use the collet puller.
I have used a bullet hammer on the 40-65 many times on neck sized cases no problem. These were new cases expanded just enough to seat the bullets then finishes with a taper crimp. 5 good smacks the break them loose then pull.
This load chronographs at 1400 fps good for range work. The WORRY is what would this have done to pressure ? Was it as I suspect the Alox was too tacky when first loaded ? Help and advice required please, thanks Gareth