Hello - I was wondering about breech seating for different bullets. I know the rule of thumb is 1/16" or 2/3's of the last band engaged in rifling. Would this apply to any bullet being seated? If you are testing different loads and trying different bullets could it be that one bullet likes a different depth than the others?
Or would it be better to set one depth for all and concentrate on other issues such as power, charge, primer.......? 

Bob H.

Bob,
Dave alway gives good advice!

Through out the years, I've only used two methods to initially set a BSer. The first was Ron Longs method of .035 to .050 of the base band, left un-engraved. The secound one is what I call the Russ Webber method, where you install a bullet, base first, into a drilled out or a threaded case, until the base makes contact with the throat. Take the case and bullet out, measure the amount that the base protrudes and then set you BSer piston to that distance. I started using the Webber setting about 6 years ago and I like it best.

After that, it's up to you to try varying the basic setting +/- to get the best results, using either method. 

Most people that I shoot with (me included), don't change BS depth, when trying other bullets but, It could well be advantageous to do that, especially if the bullet is heavier or lighter or cylindrical instead of tapered.

Frank

bruce moulds wrote on Nov 18^th, 2016 at 4:41pm:


Yes and base band size.

Frank

Bob,

What caliber are you shooting? What bullet and weight are you using? What powder and load? What method of breechseating do you use? I even want to know what primer your using! 

Yes. I had been using 20/1. Then tried 25/1 and 30/1. Results were poor and There was plenty of leading. Lubes that I was using were Schuetzen lube from JH and SPG and a home made one.

Bob