ASSRA Forum - PP diameter for a .40 cal bullet.

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PP diameter for a .40 cal bullet. (Read 8770 times)

Mick B Frequent Elocutionist Offline Posts: 1007 Location: 19 Ian Nicol St watson ACT aus Joined: Apr 11^th, 2013	Re: PP diameter for a .40 cal bullet. Reply #15 - Oct 8^th, 2016 at 8:37pm	Print Post
	Bruce The .395" bullet with the paper you mentioned my be the go, where did you get the paper from ?. The main advantages I saw in going to paper patching were no leading, better aerodynamics and the possibility of swaging them instead of casting. On the subject of swaging I visited the Corbin website and found out that the start up cost would probably be in the vicinity of a grand, that sorta killed that idea. Mike. PS If you see Charles Toohey in your travels pass on my regards.


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percival Participating Member Offline Posts: 22 Joined: Sep 7^th, 2011	Re: PP diameter for a .40 cal bullet. Reply #16 - Oct 10^th, 2016 at 3:08pm	Print Post
	Good afternoon, Anyone have any experience with the dual diameter paper patch bullets in a modern .38 cal. rifle .375 groove and .368" bore? I've read and re-read the post and find the dual diameter idea intriguing. I have a CPA 38-55 (.3759" groove) with a 1-14 twist Douglas and a modern 1885 action (Browning) with McGowen 1-16" twist barrel. I've got the idea of measuring the total paper thickness and subtracting that to get the base and nose diameters but was hoping someone has hands on... "I've done that" experience. I've only shot a hundred or so paper patch bullets, some with black and some smokeless, and I can't say that I've got the hang of it... Thanks, Richard


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bruce moulds Senior Forum Member Offline Posts: 290 Location: the antipodes Joined: Mar 14^th, 2015	Re: PP diameter for a .40 cal bullet. Reply #17 - Oct 10^th, 2016 at 3:38pm	Print Post
	mick, try art supply warehouse for 8 lb seth cole 55w. a 395 bullet should work well with this paper in a 0.400 bore. it would still be worth trying the 9 lb with the weber as well. offering a versatile choice. i see chazza a bit, so will pass along your regards. he is in the process of making me an experimental device to fit oversized felt wads into a case in a cup shaped manner as an experiment in shooting dirty. I owe Charles a lot for all the help and advice he has given me over the years. keep safe, bruce.
	« Last Edit: Oct 10^th, 2016 at 3:56pm by bruce moulds »
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bruce moulds Senior Forum Member Offline Posts: 290 Location: the antipodes Joined: Mar 14^th, 2015	Re: PP diameter for a .40 cal bullet. Reply #18 - Oct 10^th, 2016 at 4:02pm	Print Post
	Percival, while I have no experience with the 38/55, I know that if you get the bullet length right for the twist, and the diameters right, it will work with the right compression of black powder. seating most of the bullet out in the rifling will give that little case more capacity. get a mould to suit the slower of your twists, and try it in both rifles. keep safe, bruce.

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percival Participating Member Offline Posts: 22 Joined: Sep 7^th, 2011	Re: PP diameter for a .40 cal bullet. Reply #19 - Oct 10^th, 2016 at 5:36pm	Print Post
	Mick, I ordered some Seth Cole 8# 55w paper from Amazon today....but it was $28, for a 50 yd roll with "free" 2 day shipping. Thanks Bruce....I called Brooks today about a dual diameter mold ....got a voicemail....will see what they recommend when they call back....Thanks again


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bruce moulds Senior Forum Member Offline Posts: 290 Location: the antipodes Joined: Mar 14^th, 2015	Re: PP diameter for a .40 cal bullet. Reply #20 - Oct 11^th, 2016 at 1:33am	Print Post
	Percival, set the bullet up to seat 1/8" in the case. make the length of it for the slower twist, and it will also work in the faster one. a stability factor of 1.8 is way better than 1.5. freebore if any should be taken into account. cpa might advise on their rifle with regards this. keep safe, bruce.

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